XPathMessageQueryCollection Class
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Contains a collection of XPathMessageQuery objects.
public ref class XPathMessageQueryCollection : System::ServiceModel::Dispatcher::MessageQueryCollectionpublic class XPathMessageQueryCollection : System.ServiceModel.Dispatcher.MessageQueryCollectiontype XPathMessageQueryCollection = class
inherit MessageQueryCollectionPublic Class XPathMessageQueryCollection
Inherits MessageQueryCollection- Inheritance
Examples
The following example creates a message and XPath message queries. The queries are evaluated by the XPathMessageQuery objects contained in an XPathMessageQueryCollection object. The results of each query are tested using the ResultType property of the XPathResult class.
using System;
using System.IO;
using System.Xml;
using System.ServiceModel.Dispatcher;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.Xml.XPath;
namespace MessageQueryExamples
{
class Program
{
static void Main(string[] args)
{
// The XPathMessageQueryCollection inherits from MessageQueryCollection.
XPathMessageQueryCollection queryCollection = MessageHelper.SetupQueryCollection();
// Create a message and a copy of the message. You must create a buffered copy to access the message body.
Message mess = MessageHelper.CreateMessage();
MessageBuffer mb = mess.CreateBufferedCopy(int.MaxValue);
// Evaluate every query in the collection.
foreach (XPathMessageQuery q in queryCollection)
{
// Evaluate the query. Note the result type is an XPathResult.
XPathResult qPathResult = q.Evaluate<XPathResult>(mb);
// Use the XPathResult to determine the result type.
Console.WriteLine("Result type: {0}", qPathResult.ResultType);
// The following code prints the result according to the result type.
if (qPathResult.ResultType == XPathResultType.String)
Console.WriteLine("{0} = {1}", q.Expression, qPathResult.GetResultAsString());
if (qPathResult.ResultType == XPathResultType.NodeSet)
{
// Iterate through the node set.
XPathNodeIterator ns = qPathResult.GetResultAsNodeset();
foreach (XPathNavigator n in ns)
Console.WriteLine("\t{0} = {1}", q.Expression, n.Value);
}
if (qPathResult.ResultType == XPathResultType.Number)
Console.WriteLine("\t{0} = {1}", q.Expression, qPathResult.GetResultAsNumber());
if (qPathResult.ResultType == XPathResultType.Boolean)
Console.WriteLine("\t{0} ={1}", q.Expression, qPathResult.GetResultAsBoolean());
if (qPathResult.ResultType == XPathResultType.Error)
Console.WriteLine("\tError!");
}
Console.WriteLine();
// The alternate code below demonstrates similar funcionality using a MessageQueryTable.
// The difference is the KeyValuePair that requires a key to index each value.
// The code uses the expression as the key, and an arbitrary value for the value.
//MessageQueryTable<string> mq = MessageHelper.SetupTable();
//foreach (KeyValuePair<MessageQuery, string> kv in mq)
//{
// XPathMessageQuery xp = (XPathMessageQuery)kv.Key;
// Console.WriteLine("Value = {0}", kv.Value);
// Console.WriteLine("{0} = {1}", xp.Expression, xp.Evaluate<string>(mb));
//}
Console.ReadLine();
}
}
public class MessageHelper
{
static string messageBody =
"<PurchaseOrder date='today'>" +
"<Number>ABC-2009-XYZ</Number>" +
"<Department>OnlineSales</Department>" +
"<Items>" +
"<Item product='nail' quantity='1'>item1</Item>" +
"<Item product='screw' quantity='2'>item2</Item>" +
"<Item product='brad' quantity='3'>" +
"<SpecialOffer/>" +
"Special item4" +
"</Item>" +
"<Item product='SpecialNails' quantity='9'>item5</Item>" +
"<Item product='SpecialBrads' quantity='11'>" +
"<SpecialOffer/>" +
"Special item6" +
"</Item>" +
"<Item product='hammer' quantity='1'>item7</Item>" +
"<Item product='wrench' quantity='2'>item8</Item>" +
"</Items>" +
"<Comments>" +
"Rush order" +
"</Comments>" +
"</PurchaseOrder>";
public static string xpath = "/s12:Envelope/s12:Body/PurchaseOrder/Items/Item[@quantity = 1]";
public static string xpath2 = "/s12:Envelope/s12:Body/PurchaseOrder/Items/Item[@product = 'nail']";
public static string xpath3 = "/s12:Envelope/s12:Body/PurchaseOrder/Comments";
public static string xpath4 = "count(/s12:Envelope/s12:Body/PurchaseOrder/Items/Item)";
public static string xpath5 = "substring(string(/s12:Envelope/s12:Body/PurchaseOrder/Number),5,4)";
public static string xpath6 = "/s12:Envelope/s12:Body/PurchaseOrder/Department='OnlineSales'";
public static string xpath7 = "//PurchaseOrder/@date";
public static string xpath8 = "//SpecialOffer/ancestor::Item[@product = 'brad']";
// Invoke the correlation data function.
public static string xpath9 = "sm:correlation-data('CorrelationData1')";
public static string xpath10 = "sm:correlation-data('CorrelationData2')";
public static string xpath11 = "/s12:Envelope/s12:Body/PurchaseOrder/Items/Item[@quantity = 2]";
public static Message CreateMessage()
{
StringReader stringReader = new StringReader(messageBody);
XmlTextReader xmlReader = new XmlTextReader(stringReader);
Message message = Message.CreateMessage(MessageVersion.Soap12WSAddressing10, "http://purchaseorder", xmlReader);
// Add two correlation properties using lambda expressions. The property names are
// CorrelationData1 and CorrelationData2. The first goes to "value1" and the
// second to "value2". You can use your own property names and values.
CorrelationDataMessageProperty data = new CorrelationDataMessageProperty();
data.Add("CorrelationData1", () => "value1");
data.Add("CorrelationData2", () => "value2");
message.Properties[CorrelationDataMessageProperty.Name] = data;
return message;
}
public static XPathMessageQueryCollection SetupQueryCollection()
{
// Create the query collection and add the XPath queries to it. To create
// the query, you must also use a new XPathMessageContext.
XPathMessageQueryCollection queryCollection = new XPathMessageQueryCollection();
XPathMessageContext context = new XPathMessageContext();
queryCollection.Add(new XPathMessageQuery(xpath, context));
queryCollection.Add(new XPathMessageQuery(xpath2, context));
queryCollection.Add(new XPathMessageQuery(xpath3, context));
queryCollection.Add(new XPathMessageQuery(xpath4, context));
queryCollection.Add(new XPathMessageQuery(xpath5, context));
queryCollection.Add(new XPathMessageQuery(xpath6, context));
queryCollection.Add(new XPathMessageQuery(xpath7, context));
queryCollection.Add(new XPathMessageQuery(xpath8, context));
queryCollection.Add(new XPathMessageQuery(xpath9, context));
queryCollection.Add(new XPathMessageQuery(xpath10, context));
queryCollection.Add(new XPathMessageQuery(xpath11, context));
return queryCollection;
}
public static MessageQueryTable<string> SetupTable()
{
// This is optional code to demonstrate using a MessageQueryTable.
// Compare this to the MessageQueryCollection.
MessageQueryTable<string> table = new MessageQueryTable<string>();
XPathMessageContext context = new XPathMessageContext();
// The code adds a KeyValuePair to the table. Each pair requires
// a query used as the Key, and a value that is paired to the key.
table.Add(new XPathMessageQuery(xpath, context), "value10");
table.Add(new XPathMessageQuery(xpath2, context), "value20");
table.Add(new XPathMessageQuery(xpath3, context), "value30");
table.Add(new XPathMessageQuery(xpath4, context), "value40");
table.Add(new XPathMessageQuery(xpath5, context), "value50");
table.Add(new XPathMessageQuery(xpath6, context), "value60");
table.Add(new XPathMessageQuery(xpath7, context), "value70");
table.Add(new XPathMessageQuery(xpath8, context), "value80");
table.Add(new XPathMessageQuery(xpath9, context), "value90");
table.Add(new XPathMessageQuery(xpath10, context), "value100");
table.Add(new XPathMessageQuery(xpath11, context), "value110");
return table;
}
}
}
Imports System.IO
Imports System.Xml
Imports System.ServiceModel.Dispatcher
Imports System.ServiceModel
Imports System.ServiceModel.Channels
Imports System.Xml.XPath
Namespace MessageQueryExamples
Public Class Program
Public Shared Sub Main(ByVal args As String())
' The XPathMessageQueryCollection inherits from MessageQueryCollection.
Dim queryCollection As XPathMessageQueryCollection = MessageHelper.SetupQueryCollection()
' Create a message and a copy of the message. You must create a buffered copy to access the message body.
Dim mess As Message = MessageHelper.CreateMessage()
Dim mb As MessageBuffer = mess.CreateBufferedCopy(Integer.MaxValue)
' Evaluate every query in the collection.
Dim q As XPathMessageQuery
For Each q In queryCollection
' Evaluate the query. Note the result type is an XPathResult.
Dim qPathResult As XPathResult = q.Evaluate(Of XPathResult)(mb)
' Use the XPathResult to determine the result type.
Console.WriteLine("Result type: {0}", qPathResult.ResultType)
' The following code prints the result according to the result type.
If qPathResult.ResultType = XPathResultType.String Then
Console.WriteLine("{0} = {1}", q.Expression, qPathResult.GetResultAsString())
End If
If (qPathResult.ResultType = XPathResultType.NodeSet) Then
' Iterate through the node set.
Dim ns As XPathNodeIterator = qPathResult.GetResultAsNodeset()
Dim n As XPathNavigator
For Each n In ns
Console.WriteLine(" {0} = {1}", q.Expression, n.Value)
Next
End If
If qPathResult.ResultType = XPathResultType.Number Then
Console.WriteLine(" {0} = {1}", q.Expression, qPathResult.GetResultAsNumber())
End If
If qPathResult.ResultType = XPathResultType.Boolean Then
Console.WriteLine(" {0} ={1}", q.Expression, qPathResult.GetResultAsBoolean())
End If
If qPathResult.ResultType = XPathResultType.Error Then
Console.WriteLine(" Error!")
End If
Next
Console.WriteLine()
' The alternate code below demonstrates similar funcionality using a MessageQueryTable.
' The difference is the KeyValuePair that requires a key to index each value.
' The code uses the expression as the key, and an arbitrary value for the value.
'Dim mq As MessageQueryTable(Of String) = MessageHelper.SetupTable()
'Dim kv As KeyValuePair(Of MessageQuery, String)
'For Each kv In mq
' '
' Dim xp As XPathMessageQuery = CType(kv.Key, XPathMessageQuery)
' Console.WriteLine("Value = {0}", kv.Value)
' Console.WriteLine("{0} = {1}", xp.Expression, xp.Evaluate(Of String)(mb))
'Next
Console.ReadLine()
End Sub
Private Shared Sub Evaluate(ByVal p1 As Object)
Throw New NotImplementedException
End Sub
End Class
Public Class MessageHelper
Shared messageBody As String = _
"<PurchaseOrder date='today'>" + _
"<Number>ABC-2009-XYZ</Number>" + _
"<Department>OnlineSales</Department>" + _
"<Items>" + _
"<Item product='nail' quantity='1'>item1</Item>" + _
"<Item product='screw' quantity='2'>item2</Item>" + _
"<Item product='brad' quantity='3'>" + _
"<SpecialOffer/>" + _
"Special item4" + _
"</Item>" + _
"<Item product='SpecialNails' quantity='9'>item5</Item>" + _
"<Item product='SpecialBrads' quantity='11'>" + _
"<SpecialOffer/>" + _
"Special item6" + _
"</Item>" + _
"<Item product='hammer' quantity='1'>item7</Item>" + _
"<Item product='wrench' quantity='2'>item8</Item>" + _
"</Items>" + _
"<Comments>" + _
"Rush order" + _
"</Comments>" + _
"</PurchaseOrder>"
Public Shared xpath As String = "/s12:Envelope/s12:Body/PurchaseOrder/Items/Item[@quantity = 1]"
Public Shared xpath2 As String = "/s12:Envelope/s12:Body/PurchaseOrder/Items/Item[@product = 'nail']"
Public Shared xpath3 As String = "/s12:Envelope/s12:Body/PurchaseOrder/Comments"
Public Shared xpath4 As String = "count(/s12:Envelope/s12:Body/PurchaseOrder/Items/Item)"
Public Shared xpath5 As String = "substring(string(/s12:Envelope/s12:Body/PurchaseOrder/Number),5,4)"
Public Shared xpath6 As String = "/s12:Envelope/s12:Body/PurchaseOrder/Department='OnlineSales'"
Public Shared xpath7 As String = "//PurchaseOrder/@date"
Public Shared xpath8 As String = "//SpecialOffer/ancestor::Item[@product = 'brad']"
' Invoke the correlation data function.
Public Shared xpath9 As String = "sm:correlation-data('CorrelationData1')"
Public Shared xpath10 As String = "sm:correlation-data('CorrelationData2')"
Public Shared xpath11 As String = "/s12:Envelope/s12:Body/PurchaseOrder/Items/Item[@quantity = 2]"
Public Shared Function CreateMessage() As Message
Dim stringReader As New StringReader(messageBody)
Dim xmlReader As New XmlTextReader(stringReader)
Dim message As Message = message.CreateMessage( _
MessageVersion.Soap12WSAddressing10, "http://purchaseorder", xmlReader)
' Add two correlation properties using lambda expressions. The property names are
' CorrelationData1 and CorrelationData2. The first goes to "value1" and the
' second to "value2". You can use your own property names and values.
Dim data As New CorrelationDataMessageProperty()
data.Add("CorrelationData1", Function() "value1")
data.Add("CorrelationData2", Function() "value2")
message.Properties(CorrelationDataMessageProperty.Name) = data
Return message
End Function
Public Shared Function SetupQueryCollection() As XPathMessageQueryCollection
' Create the query collection and add the XPath queries to it. To create
' the query, you must also use a new XPathMessageContext.
Dim queryCollection As New XPathMessageQueryCollection()
Dim context As XPathMessageContext = New XPathMessageContext()
queryCollection.Add(New XPathMessageQuery(xpath, context))
queryCollection.Add(New XPathMessageQuery(xpath2, context))
queryCollection.Add(New XPathMessageQuery(xpath3, context))
queryCollection.Add(New XPathMessageQuery(xpath4, context))
queryCollection.Add(New XPathMessageQuery(xpath5, context))
queryCollection.Add(New XPathMessageQuery(xpath6, context))
queryCollection.Add(New XPathMessageQuery(xpath7, context))
queryCollection.Add(New XPathMessageQuery(xpath8, context))
queryCollection.Add(New XPathMessageQuery(xpath9, context))
queryCollection.Add(New XPathMessageQuery(xpath10, context))
queryCollection.Add(New XPathMessageQuery(xpath11, context))
Return queryCollection
End Function
Public Shared Function SetupTable() As MessageQueryTable(Of String)
' This is optional code to demonstrate using a MessageQueryTable.
' Compare this to the MessageQueryCollection.
Dim table As MessageQueryTable(Of String) = New MessageQueryTable(Of String)()
Dim context As XPathMessageContext = New XPathMessageContext()
' The code adds a KeyValuePair to the table. Each pair requires
' a query used as the Key, and a value that is paired to the key.
table.Add(New XPathMessageQuery(xpath, context), "value10")
table.Add(New XPathMessageQuery(xpath2, context), "value20")
table.Add(New XPathMessageQuery(xpath3, context), "value30")
table.Add(New XPathMessageQuery(xpath4, context), "value40")
table.Add(New XPathMessageQuery(xpath5, context), "value50")
table.Add(New XPathMessageQuery(xpath6, context), "value60")
table.Add(New XPathMessageQuery(xpath7, context), "value70")
table.Add(New XPathMessageQuery(xpath8, context), "value80")
table.Add(New XPathMessageQuery(xpath9, context), "value90")
table.Add(New XPathMessageQuery(xpath10, context), "value100")
table.Add(New XPathMessageQuery(xpath11, context), "value110")
Return table
End Function
End Class
End Namespace
Remarks
For more information about message queries, see the MessageQuery and MessageQueryCollection classes.
Constructors
| XPathMessageQueryCollection() |
Initializes a new instance of the XPathMessageQueryCollection class. |
Properties
| Count |
Gets the number of elements actually contained in the Collection<T>. (Inherited from Collection<T>) |
| Item[Int32] |
Gets or sets the element at the specified index. (Inherited from Collection<T>) |
| Items |
Gets a IList<T> wrapper around the Collection<T>. (Inherited from Collection<T>) |
Methods
| Add(T) |
Adds an object to the end of the Collection<T>. (Inherited from Collection<T>) |
| Clear() |
Removes all elements from the Collection<T>. (Inherited from Collection<T>) |
| ClearItems() |
Removes all elements from the Collection<T>. (Inherited from Collection<T>) |
| Contains(T) |
Determines whether an element is in the Collection<T>. (Inherited from Collection<T>) |
| CopyTo(T[], Int32) |
Copies the entire Collection<T> to a compatible one-dimensional Array, starting at the specified index of the target array. (Inherited from Collection<T>) |
| Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
| Evaluate<TResult>(Message) |
Runs a query against the message. The body cannot be queried. |
| Evaluate<TResult>(MessageBuffer) |
Runs an XPath query against the message. |
| GetEnumerator() |
Returns an enumerator that iterates through the Collection<T>. (Inherited from Collection<T>) |
| GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
| GetType() |
Gets the Type of the current instance. (Inherited from Object) |
| IndexOf(T) |
Searches for the specified object and returns the zero-based index of the first occurrence within the entire Collection<T>. (Inherited from Collection<T>) |
| Insert(Int32, T) |
Inserts an element into the Collection<T> at the specified index. (Inherited from Collection<T>) |
| InsertItem(Int32, MessageQuery) |
Inserts the XPath query object into the collection at the specified index. |
| InsertItem(Int32, T) |
Inserts an element into the Collection<T> at the specified index. (Inherited from Collection<T>) |
| MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
| Remove(T) |
Removes the first occurrence of a specific object from the Collection<T>. (Inherited from Collection<T>) |
| RemoveAt(Int32) |
Removes the element at the specified index of the Collection<T>. (Inherited from Collection<T>) |
| RemoveItem(Int32) |
Removes the item from the collection at the specified index. |
| SetItem(Int32, MessageQuery) |
Replaces the element at the specified index. |
| SetItem(Int32, T) |
Replaces the element at the specified index. (Inherited from Collection<T>) |
| ToString() |
Returns a string that represents the current object. (Inherited from Object) |
Explicit Interface Implementations
| ICollection.CopyTo(Array, Int32) |
Copies the elements of the ICollection to an Array, starting at a particular Array index. (Inherited from Collection<T>) |
| ICollection.IsSynchronized |
Gets a value indicating whether access to the ICollection is synchronized (thread safe). (Inherited from Collection<T>) |
| ICollection.SyncRoot |
Gets an object that can be used to synchronize access to the ICollection. (Inherited from Collection<T>) |
| ICollection<T>.IsReadOnly |
Gets a value indicating whether the ICollection<T> is read-only. (Inherited from Collection<T>) |
| IEnumerable.GetEnumerator() |
Returns an enumerator that iterates through a collection. (Inherited from Collection<T>) |
| IList.Add(Object) |
Adds an item to the IList. (Inherited from Collection<T>) |
| IList.Contains(Object) |
Determines whether the IList contains a specific value. (Inherited from Collection<T>) |
| IList.IndexOf(Object) |
Determines the index of a specific item in the IList. (Inherited from Collection<T>) |
| IList.Insert(Int32, Object) |
Inserts an item into the IList at the specified index. (Inherited from Collection<T>) |
| IList.IsFixedSize |
Gets a value indicating whether the IList has a fixed size. (Inherited from Collection<T>) |
| IList.IsReadOnly |
Gets a value indicating whether the IList is read-only. (Inherited from Collection<T>) |
| IList.Item[Int32] |
Gets or sets the element at the specified index. (Inherited from Collection<T>) |
| IList.Remove(Object) |
Removes the first occurrence of a specific object from the IList. (Inherited from Collection<T>) |
Extension Methods
| CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption, FillErrorEventHandler) |
Copies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter |
| CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption) |
Copies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter |
| CopyToDataTable<T>(IEnumerable<T>) |
Returns a DataTable that contains copies of the DataRow objects, given an input IEnumerable<T> object where the generic parameter |
| Aggregate<TSource>(IEnumerable<TSource>, Func<TSource,TSource,TSource>) |
Applies an accumulator function over a sequence. |
| Aggregate<TSource,TAccumulate>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate,TSource,TAccumulate>) |
Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value. |
| Aggregate<TSource,TAccumulate,TResult>(IEnumerable<TSource>, TAccumulate, Func<TAccumulate,TSource,TAccumulate>, Func<TAccumulate,TResult>) |
Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value. |
| All<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Determines whether all elements of a sequence satisfy a condition. |
| Any<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Determines whether any element of a sequence satisfies a condition. |
| Any<TSource>(IEnumerable<TSource>) |
Determines whether a sequence contains any elements. |
| Append<TSource>(IEnumerable<TSource>, TSource) |
Appends a value to the end of the sequence. |
| AsEnumerable<TSource>(IEnumerable<TSource>) |
Returns the input typed as IEnumerable<T>. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) |
Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Double>) |
Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) |
Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) |
Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) |
Computes the average of a sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) |
Computes the average of a sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) |
Computes the average of a sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) |
Computes the average of a sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) |
Computes the average of a sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence. |
| Average<TSource>(IEnumerable<TSource>, Func<TSource,Single>) |
Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. |
| Cast<TResult>(IEnumerable) |
Casts the elements of an IEnumerable to the specified type. |
| Concat<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) |
Concatenates two sequences. |
| Contains<TSource>(IEnumerable<TSource>, TSource, IEqualityComparer<TSource>) |
Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>. |
| Contains<TSource>(IEnumerable<TSource>, TSource) |
Determines whether a sequence contains a specified element by using the default equality comparer. |
| Count<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns a number that represents how many elements in the specified sequence satisfy a condition. |
| Count<TSource>(IEnumerable<TSource>) |
Returns the number of elements in a sequence. |
| DefaultIfEmpty<TSource>(IEnumerable<TSource>, TSource) |
Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty. |
| DefaultIfEmpty<TSource>(IEnumerable<TSource>) |
Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty. |
| Distinct<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>) |
Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values. |
| Distinct<TSource>(IEnumerable<TSource>) |
Returns distinct elements from a sequence by using the default equality comparer to compare values. |
| ElementAt<TSource>(IEnumerable<TSource>, Int32) |
Returns the element at a specified index in a sequence. |
| ElementAtOrDefault<TSource>(IEnumerable<TSource>, Int32) |
Returns the element at a specified index in a sequence or a default value if the index is out of range. |
| Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) |
Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values. |
| Except<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) |
Produces the set difference of two sequences by using the default equality comparer to compare values. |
| First<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns the first element in a sequence that satisfies a specified condition. |
| First<TSource>(IEnumerable<TSource>) |
Returns the first element of a sequence. |
| FirstOrDefault<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns the first element of the sequence that satisfies a condition or a default value if no such element is found. |
| FirstOrDefault<TSource>(IEnumerable<TSource>) |
Returns the first element of a sequence, or a default value if the sequence contains no elements. |
| GroupBy<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>) |
Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer. |
| GroupBy<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>) |
Groups the elements of a sequence according to a specified key selector function. |
| GroupBy<TSource,TKey,TElement>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>) |
Groups the elements of a sequence according to a key selector function. The keys are compared by using a comparer and each group's elements are projected by using a specified function. |
| GroupBy<TSource,TKey,TElement>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>) |
Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function. |
| GroupBy<TSource,TKey,TResult>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TKey,IEnumerable<TSource>,TResult>, IEqualityComparer<TKey>) |
Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The keys are compared by using a specified comparer. |
| GroupBy<TSource,TKey,TResult>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TKey,IEnumerable<TSource>,TResult>) |
Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. |
| GroupBy<TSource,TKey,TElement,TResult>(IEnumerable<TSource>, Func<TSource, TKey>, Func<TSource,TElement>, Func<TKey,IEnumerable<TElement>, TResult>, IEqualityComparer<TKey>) |
Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. Key values are compared by using a specified comparer, and the elements of each group are projected by using a specified function. |
| GroupBy<TSource,TKey,TElement,TResult>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, Func<TKey,IEnumerable<TElement>,TResult>) |
Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. The elements of each group are projected by using a specified function. |
| GroupJoin<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>) |
Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys. |
| GroupJoin<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,IEnumerable<TInner>, TResult>) |
Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys. |
| Intersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) |
Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values. |
| Intersect<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) |
Produces the set intersection of two sequences by using the default equality comparer to compare values. |
| Join<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,TInner,TResult>, IEqualityComparer<TKey>) |
Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys. |
| Join<TOuter,TInner,TKey,TResult>(IEnumerable<TOuter>, IEnumerable<TInner>, Func<TOuter,TKey>, Func<TInner,TKey>, Func<TOuter,TInner,TResult>) |
Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys. |
| Last<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns the last element of a sequence that satisfies a specified condition. |
| Last<TSource>(IEnumerable<TSource>) |
Returns the last element of a sequence. |
| LastOrDefault<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns the last element of a sequence that satisfies a condition or a default value if no such element is found. |
| LastOrDefault<TSource>(IEnumerable<TSource>) |
Returns the last element of a sequence, or a default value if the sequence contains no elements. |
| LongCount<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns an Int64 that represents how many elements in a sequence satisfy a condition. |
| LongCount<TSource>(IEnumerable<TSource>) |
Returns an Int64 that represents the total number of elements in a sequence. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) |
Invokes a transform function on each element of a sequence and returns the maximum Decimal value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Double>) |
Invokes a transform function on each element of a sequence and returns the maximum Double value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) |
Invokes a transform function on each element of a sequence and returns the maximum Int32 value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) |
Invokes a transform function on each element of a sequence and returns the maximum Int64 value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) |
Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) |
Invokes a transform function on each element of a sequence and returns the maximum nullable Double value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) |
Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) |
Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) |
Invokes a transform function on each element of a sequence and returns the maximum nullable Single value. |
| Max<TSource>(IEnumerable<TSource>, Func<TSource,Single>) |
Invokes a transform function on each element of a sequence and returns the maximum Single value. |
| Max<TSource>(IEnumerable<TSource>) |
Returns the maximum value in a generic sequence. |
| Max<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) |
Invokes a transform function on each element of a generic sequence and returns the maximum resulting value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) |
Invokes a transform function on each element of a sequence and returns the minimum Decimal value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Double>) |
Invokes a transform function on each element of a sequence and returns the minimum Double value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) |
Invokes a transform function on each element of a sequence and returns the minimum Int32 value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) |
Invokes a transform function on each element of a sequence and returns the minimum Int64 value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) |
Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) |
Invokes a transform function on each element of a sequence and returns the minimum nullable Double value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) |
Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) |
Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) |
Invokes a transform function on each element of a sequence and returns the minimum nullable Single value. |
| Min<TSource>(IEnumerable<TSource>, Func<TSource,Single>) |
Invokes a transform function on each element of a sequence and returns the minimum Single value. |
| Min<TSource>(IEnumerable<TSource>) |
Returns the minimum value in a generic sequence. |
| Min<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) |
Invokes a transform function on each element of a generic sequence and returns the minimum resulting value. |
| OfType<TResult>(IEnumerable) |
Filters the elements of an IEnumerable based on a specified type. |
| OrderBy<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>, IComparer<TKey>) |
Sorts the elements of a sequence in ascending order by using a specified comparer. |
| OrderBy<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>) |
Sorts the elements of a sequence in ascending order according to a key. |
| OrderByDescending<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>, IComparer<TKey>) |
Sorts the elements of a sequence in descending order by using a specified comparer. |
| OrderByDescending<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>) |
Sorts the elements of a sequence in descending order according to a key. |
| Prepend<TSource>(IEnumerable<TSource>, TSource) |
Adds a value to the beginning of the sequence. |
| Reverse<TSource>(IEnumerable<TSource>) |
Inverts the order of the elements in a sequence. |
| Select<TSource,TResult>(IEnumerable<TSource>, Func<TSource,TResult>) |
Projects each element of a sequence into a new form. |
| Select<TSource,TResult>(IEnumerable<TSource>, Func<TSource,Int32,TResult>) |
Projects each element of a sequence into a new form by incorporating the element's index. |
| SelectMany<TSource,TResult>(IEnumerable<TSource>, Func<TSource,IEnumerable<TResult>>) |
Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence. |
| SelectMany<TSource,TResult>(IEnumerable<TSource>, Func<TSource,Int32,IEnumerable<TResult>>) |
Projects each element of a sequence to an IEnumerable<T>, and flattens the resulting sequences into one sequence. The index of each source element is used in the projected form of that element. |
| SelectMany<TSource,TCollection,TResult>(IEnumerable<TSource>, Func<TSource,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>) |
Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. |
| SelectMany<TSource,TCollection,TResult>(IEnumerable<TSource>, Func<TSource,Int32,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>) |
Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element. |
| SequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) |
Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<T>. |
| SequenceEqual<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) |
Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type. |
| Single<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists. |
| Single<TSource>(IEnumerable<TSource>) |
Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence. |
| SingleOrDefault<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition. |
| SingleOrDefault<TSource>(IEnumerable<TSource>) |
Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence. |
| Skip<TSource>(IEnumerable<TSource>, Int32) |
Bypasses a specified number of elements in a sequence and then returns the remaining elements. |
| SkipWhile<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. |
| SkipWhile<TSource>(IEnumerable<TSource>, Func<TSource,Int32,Boolean>) |
Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Decimal>) |
Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Double>) |
Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Int32>) |
Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Int64>) |
Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Decimal>>) |
Computes the sum of the sequence of nullable Decimal values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Double>>) |
Computes the sum of the sequence of nullable Double values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int32>>) |
Computes the sum of the sequence of nullable Int32 values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Int64>>) |
Computes the sum of the sequence of nullable Int64 values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Nullable<Single>>) |
Computes the sum of the sequence of nullable Single values that are obtained by invoking a transform function on each element of the input sequence. |
| Sum<TSource>(IEnumerable<TSource>, Func<TSource,Single>) |
Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. |
| Take<TSource>(IEnumerable<TSource>, Int32) |
Returns a specified number of contiguous elements from the start of a sequence. |
| TakeWhile<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Returns elements from a sequence as long as a specified condition is true. |
| TakeWhile<TSource>(IEnumerable<TSource>, Func<TSource,Int32,Boolean>) |
Returns elements from a sequence as long as a specified condition is true. The element's index is used in the logic of the predicate function. |
| ToArray<TSource>(IEnumerable<TSource>) |
Creates an array from a IEnumerable<T>. |
| ToDictionary<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>) |
Creates a Dictionary<TKey,TValue> from an IEnumerable<T> according to a specified key selector function and key comparer. |
| ToDictionary<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>) |
Creates a Dictionary<TKey,TValue> from an IEnumerable<T> according to a specified key selector function. |
| ToDictionary<TSource,TKey,TElement>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>) |
Creates a Dictionary<TKey,TValue> from an IEnumerable<T> according to a specified key selector function, a comparer, and an element selector function. |
| ToDictionary<TSource,TKey,TElement>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>) |
Creates a Dictionary<TKey,TValue> from an IEnumerable<T> according to specified key selector and element selector functions. |
| ToHashSet<TSource>(IEnumerable<TSource>, IEqualityComparer<TSource>) |
Creates a HashSet<T> from an IEnumerable<T> using the |
| ToHashSet<TSource>(IEnumerable<TSource>) |
Creates a HashSet<T> from an IEnumerable<T>. |
| ToList<TSource>(IEnumerable<TSource>) |
Creates a List<T> from an IEnumerable<T>. |
| ToLookup<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>, IEqualityComparer<TKey>) |
Creates a Lookup<TKey,TElement> from an IEnumerable<T> according to a specified key selector function and key comparer. |
| ToLookup<TSource,TKey>(IEnumerable<TSource>, Func<TSource,TKey>) |
Creates a Lookup<TKey,TElement> from an IEnumerable<T> according to a specified key selector function. |
| ToLookup<TSource,TKey,TElement>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer<TKey>) |
Creates a Lookup<TKey,TElement> from an IEnumerable<T> according to a specified key selector function, a comparer and an element selector function. |
| ToLookup<TSource,TKey,TElement>(IEnumerable<TSource>, Func<TSource,TKey>, Func<TSource,TElement>) |
Creates a Lookup<TKey,TElement> from an IEnumerable<T> according to specified key selector and element selector functions. |
| Union<TSource>(IEnumerable<TSource>, IEnumerable<TSource>, IEqualityComparer<TSource>) |
Produces the set union of two sequences by using a specified IEqualityComparer<T>. |
| Union<TSource>(IEnumerable<TSource>, IEnumerable<TSource>) |
Produces the set union of two sequences by using the default equality comparer. |
| Where<TSource>(IEnumerable<TSource>, Func<TSource,Boolean>) |
Filters a sequence of values based on a predicate. |
| Where<TSource>(IEnumerable<TSource>, Func<TSource,Int32,Boolean>) |
Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function. |
| Zip<TFirst,TSecond,TResult>(IEnumerable<TFirst>, IEnumerable<TSecond>, Func<TFirst,TSecond,TResult>) |
Applies a specified function to the corresponding elements of two sequences, producing a sequence of the results. |
| AsParallel(IEnumerable) |
Enables parallelization of a query. |
| AsParallel<TSource>(IEnumerable<TSource>) |
Enables parallelization of a query. |
| AsQueryable(IEnumerable) |
Converts an IEnumerable to an IQueryable. |
| AsQueryable<TElement>(IEnumerable<TElement>) |
Converts a generic IEnumerable<T> to a generic IQueryable<T>. |
| Ancestors<T>(IEnumerable<T>, XName) |
Returns a filtered collection of elements that contains the ancestors of every node in the source collection. Only elements that have a matching XName are included in the collection. |
| Ancestors<T>(IEnumerable<T>) |
Returns a collection of elements that contains the ancestors of every node in the source collection. |
| DescendantNodes<T>(IEnumerable<T>) |
Returns a collection of the descendant nodes of every document and element in the source collection. |
| Descendants<T>(IEnumerable<T>, XName) |
Returns a filtered collection of elements that contains the descendant elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection. |
| Descendants<T>(IEnumerable<T>) |
Returns a collection of elements that contains the descendant elements of every element and document in the source collection. |
| Elements<T>(IEnumerable<T>, XName) |
Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection. |
| Elements<T>(IEnumerable<T>) |
Returns a collection of the child elements of every element and document in the source collection. |
| InDocumentOrder<T>(IEnumerable<T>) |
Returns a collection of nodes that contains all nodes in the source collection, sorted in document order. |
| Nodes<T>(IEnumerable<T>) |
Returns a collection of the child nodes of every document and element in the source collection. |
| Remove<T>(IEnumerable<T>) |
Removes every node in the source collection from its parent node. |
