XmlReader.Item[] Property

Definition

Namespace:

System.Xml

Assembly:

System.Xml.ReaderWriter.dll

When overridden in a derived class, gets the value of the attribute.

Overloads

Item[Int32]	When overridden in a derived class, gets the value of the attribute with the specified index.
Item[String]	When overridden in a derived class, gets the value of the attribute with the specified Name.
Item[String, String]	When overridden in a derived class, gets the value of the attribute with the specified LocalName and NamespaceURI.

Item[Int32]

Source:

XmlReader.cs

When overridden in a derived class, gets the value of the attribute with the specified index.

public:
 virtual property System::String ^ default[int] { System::String ^ get(int i); };

public virtual string this[int i] { get; }

member this.Item(int) : string

Default Public Overridable ReadOnly Property Item(i As Integer) As String

Parameters

i

Int32

The index of the attribute.

Property Value

String

The value of the specified attribute.

Exceptions

InvalidOperationException

An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."

Examples

The following example displays all attributes on the current node.

// Display all attributes.
if (reader.HasAttributes) {
  Console.WriteLine("Attributes of <" + reader.Name + ">");
  for (int i = 0; i < reader.AttributeCount; i++) {
    Console.WriteLine("  {0}", reader[i]);
  }
  // Move the reader back to the element node.
  reader.MoveToElement();
}

' Display all attributes.
If reader.HasAttributes Then
  Console.WriteLine("Attributes of <" + reader.Name + ">")
  Dim i As Integer
  For i = 0 To (reader.AttributeCount - 1)
    Console.WriteLine("  {0}", reader(i))
  Next i
  ' Move the reader back to the element node.
  reader.MoveToElement() 
End If

Remarks

This property does not move the reader.

See also

• GetAttribute(Int32)

Item[String]

Source:

XmlReader.cs

When overridden in a derived class, gets the value of the attribute with the specified Name.

public:
 virtual property System::String ^ default[System::String ^] { System::String ^ get(System::String ^ name); };

public virtual string? this[string name] { get; }

member this.Item(string) : string

Default Public Overridable ReadOnly Property Item(name As String) As String

Parameters

name

String

The qualified name of the attribute.

Property Value

String

The value of the specified attribute. If the attribute is not found, null is returned.

Exceptions

InvalidOperationException

An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."

Examples

The following example gets the value of the ISBN attribute.

reader.ReadToDescendant("book");
string isbn =reader["ISBN"];
Console.WriteLine("The ISBN value: " + isbn);

reader.ReadToDescendant("book")
Dim isbn As String = reader("ISBN")
Console.WriteLine("The ISBN value: " + isbn)

Remarks

This property does not move the reader.

If the reader is positioned on a DocumentType node, this method can be used to get the PUBLIC and SYSTEM literals, for example, reader["PUBLIC"]

See also

• GetAttribute(String)

Item[String, String]

Source:

XmlReader.cs

When overridden in a derived class, gets the value of the attribute with the specified LocalName and NamespaceURI.

public:
 virtual property System::String ^ default[System::String ^, System::String ^] { System::String ^ get(System::String ^ name, System::String ^ namespaceURI); };

public virtual string? this[string name, string? namespaceURI] { get; }

member this.Item(string * string) : string

Default Public Overridable ReadOnly Property Item(name As String, namespaceURI As String) As String

Parameters

name

String

The local name of the attribute.

namespaceURI

String

The namespace URI of the attribute.

Property Value

String

The value of the specified attribute. If the attribute is not found, null is returned.

Exceptions

InvalidOperationException

An XmlReader method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."

Remarks

This property does not move the reader.

See also

• GetAttribute(String, String)