Article
11/18/2011

EntitySet<TEntity> Class

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Provides for deferred loading and relationship maintenance for the collection side of one-to-many and one-to-one relationships in a LINQ to SQL applications.

Inheritance Hierarchy

System.Object
System.Data.Linq.EntitySet<TEntity>

Namespace: System.Data.Linq
Assembly: System.Data.Linq (in System.Data.Linq.dll)

Syntax

'Declaration
<DefaultMemberAttribute("Item")> _
Public NotInheritable Class EntitySet(Of TEntity As Class) _
    Implements IList, ICollection, IList(Of TEntity),  _
    ICollection(Of TEntity), IEnumerable(Of TEntity), IEnumerable,  _
    INotifyCollectionChanged

[DefaultMemberAttribute("Item")]
public sealed class EntitySet<TEntity> : IList, 
    ICollection, IList<TEntity>, ICollection<TEntity>, IEnumerable<TEntity>, 
    IEnumerable, INotifyCollectionChanged
where TEntity : class

Type Parameters

TEntity
The data type of the target entity.

The EntitySet<TEntity> type exposes the following members.

Constructors

	Name	Description
	EntitySet<TEntity>()	Initializes a new instance of the EntitySet<TEntity> class.
	EntitySet<TEntity>(Action<TEntity>, Action<TEntity>)	Initializes a new instance of the EntitySet<TEntity> class while supplying handlers for add and remove operations.

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Properties

	Name	Description
	Count	Gets the number of entities in the EntitySet<TEntity> collection.
	HasLoadedOrAssignedValues	Specifies whether the EntitySet<TEntity> has loaded or assigned a value.
	IsDeferred	Specifies whether this EntitySet<TEntity> has a deferred query that has not yet executed.
	Item	Gets or sets the element at the specified index.

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Methods

	Name	Description
	Add	Adds an entity.
	AddRange	Adds a collection of entities.
	Assign	Assigns an EntitySet<TEntity> collection to another EntitySet<TEntity> collection.
	Clear	Removes all items.
	Contains	Specifies whether the EntitySet<TEntity> contains a specific entity.
	CopyTo	Copies the EntitySet<TEntity> to an array.
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetEnumerator	Returns an enumerator that iterates through a collection.
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	IndexOf	Returns the index of the entity.
	Insert	Inserts an entity at an index position.
	Load	Loads the EntitySet<TEntity>.
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	Remove	Removes an entity.
	RemoveAt	Removes an entity at a specified index.
	SetSource	Sets the source of the EntitySet<TEntity>.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Events

	Name	Description
	CollectionChanged	Occurs when the contents of a collection are changed.

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Extension Methods

	Name	Description
	Aggregate<TEntity>(Func<TEntity, TEntity, TEntity>)	Overloaded. Applies an accumulator function over a sequence. (Defined by Enumerable.)
	Aggregate<TEntity, TAccumulate>(TAccumulate, Func<TAccumulate, TEntity, TAccumulate>)	Overloaded. Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value. (Defined by Enumerable.)
	Aggregate<TEntity, TAccumulate, TResult>(TAccumulate, Func<TAccumulate, TEntity, TAccumulate>, Func<TAccumulate, TResult>)	Overloaded. 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. (Defined by Enumerable.)
	All<TEntity>	Determines whether all elements of a sequence satisfy a condition. (Defined by Enumerable.)
	Any<TEntity>()	Overloaded. Determines whether a sequence contains any elements. (Defined by Enumerable.)
	Any<TEntity>(Func<TEntity, Boolean>)	Overloaded. Determines whether any element of a sequence satisfies a condition. (Defined by Enumerable.)
	AsEnumerable<TEntity>	Returns the input typed as IEnumerable<T>. (Defined by Enumerable.)
	AsQueryable()	Overloaded. Converts an IEnumerable to an IQueryable. (Defined by Queryable.)
	AsQueryable<TEntity>()	Overloaded. Converts a generic IEnumerable<T> to a generic IQueryable<T>. (Defined by Queryable.)
	Average<TEntity>(Func<TEntity, Decimal>)	Overloaded. Computes the average of a sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Nullable<Decimal>>)	Overloaded. 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. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Double>)	Overloaded. Computes the average of a sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Nullable<Double>>)	Overloaded. 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. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Int32>)	Overloaded. Computes the average of a sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Nullable<Int32>>)	Overloaded. 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. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Int64>)	Overloaded. Computes the average of a sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Nullable<Int64>>)	Overloaded. 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. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Single>)	Overloaded. Computes the average of a sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Average<TEntity>(Func<TEntity, Nullable<Single>>)	Overloaded. 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. (Defined by Enumerable.)
	Cast<TResult>	Converts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
	Concat<TEntity>	Concatenates two sequences. (Defined by Enumerable.)
	Contains<TEntity>(TEntity)	Overloaded. Determines whether a sequence contains a specified element by using the default equality comparer. (Defined by Enumerable.)
	Contains<TEntity>(TEntity, IEqualityComparer<TEntity>)	Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>. (Defined by Enumerable.)
	Count<TEntity>()	Overloaded. Returns the number of elements in a sequence. (Defined by Enumerable.)
	Count<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns a number that represents how many elements in the specified sequence satisfy a condition. (Defined by Enumerable.)
	DefaultIfEmpty<TEntity>()	Overloaded. Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the sequence is empty. (Defined by Enumerable.)
	DefaultIfEmpty<TEntity>(TEntity)	Overloaded. Returns the elements of the specified sequence or the specified value in a singleton collection if the sequence is empty. (Defined by Enumerable.)
	Distinct<TEntity>()	Overloaded. Returns distinct elements from a sequence by using the default equality comparer to compare values. (Defined by Enumerable.)
	Distinct<TEntity>(IEqualityComparer<TEntity>)	Overloaded. Returns distinct elements from a sequence by using a specified IEqualityComparer<T> to compare values. (Defined by Enumerable.)
	ElementAt<TEntity>	Returns the element at a specified index in a sequence. (Defined by Enumerable.)
	ElementAtOrDefault<TEntity>	Returns the element at a specified index in a sequence or a default value if the index is out of range. (Defined by Enumerable.)
	Except<TEntity>(IEnumerable<TEntity>)	Overloaded. Produces the set difference of two sequences by using the default equality comparer to compare values. (Defined by Enumerable.)
	Except<TEntity>(IEnumerable<TEntity>, IEqualityComparer<TEntity>)	Overloaded. Produces the set difference of two sequences by using the specified IEqualityComparer<T> to compare values. (Defined by Enumerable.)
	First<TEntity>()	Overloaded. Returns the first element of a sequence. (Defined by Enumerable.)
	First<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns the first element in a sequence that satisfies a specified condition. (Defined by Enumerable.)
	FirstOrDefault<TEntity>()	Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements. (Defined by Enumerable.)
	FirstOrDefault<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns the first element of the sequence that satisfies a condition or a default value if no such element is found. (Defined by Enumerable.)
	GroupBy<TEntity, TKey>(Func<TEntity, TKey>)	Overloaded. Groups the elements of a sequence according to a specified key selector function. (Defined by Enumerable.)
	GroupBy<TEntity, TKey>(Func<TEntity, TKey>, IEqualityComparer<TKey>)	Overloaded. Groups the elements of a sequence according to a specified key selector function and compares the keys by using a specified comparer. (Defined by Enumerable.)
	GroupBy<TEntity, TKey, TElement>(Func<TEntity, TKey>, Func<TEntity, TElement>)	Overloaded. 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. (Defined by Enumerable.)
	GroupBy<TEntity, TKey, TResult>(Func<TEntity, TKey>, Func<TKey, IEnumerable<TEntity>, TResult>)	Overloaded. Groups the elements of a sequence according to a specified key selector function and creates a result value from each group and its key. (Defined by Enumerable.)
	GroupBy<TEntity, TKey, TElement>(Func<TEntity, TKey>, Func<TEntity, TElement>, IEqualityComparer<TKey>)	Overloaded. 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. (Defined by Enumerable.)
	GroupBy<TEntity, TKey, TResult>(Func<TEntity, TKey>, Func<TKey, IEnumerable<TEntity>, TResult>, IEqualityComparer<TKey>)	Overloaded. 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. (Defined by Enumerable.)
	GroupBy<TEntity, TKey, TElement, TResult>(Func<TEntity, TKey>, Func<TEntity, TElement>, Func<TKey, IEnumerable<TElement>, TResult>)	Overloaded. 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. (Defined by Enumerable.)
	GroupBy<TEntity, TKey, TElement, TResult>(Func<TEntity, TKey>, Func<TEntity, TElement>, Func<TKey, IEnumerable<TElement>, TResult>, IEqualityComparer<TKey>)	Overloaded. 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. (Defined by Enumerable.)
	GroupJoin<TEntity, TInner, TKey, TResult>(IEnumerable<TInner>, Func<TEntity, TKey>, Func<TInner, TKey>, Func<TEntity, IEnumerable<TInner>, TResult>)	Overloaded. Correlates the elements of two sequences based on equality of keys and groups the results. The default equality comparer is used to compare keys. (Defined by Enumerable.)
	GroupJoin<TEntity, TInner, TKey, TResult>(IEnumerable<TInner>, Func<TEntity, TKey>, Func<TInner, TKey>, Func<TEntity, IEnumerable<TInner>, TResult>, IEqualityComparer<TKey>)	Overloaded. Correlates the elements of two sequences based on key equality and groups the results. A specified IEqualityComparer<T> is used to compare keys. (Defined by Enumerable.)
	Intersect<TEntity>(IEnumerable<TEntity>)	Overloaded. Produces the set intersection of two sequences by using the default equality comparer to compare values. (Defined by Enumerable.)
	Intersect<TEntity>(IEnumerable<TEntity>, IEqualityComparer<TEntity>)	Overloaded. Produces the set intersection of two sequences by using the specified IEqualityComparer<T> to compare values. (Defined by Enumerable.)
	Join<TEntity, TInner, TKey, TResult>(IEnumerable<TInner>, Func<TEntity, TKey>, Func<TInner, TKey>, Func<TEntity, TInner, TResult>)	Overloaded. Correlates the elements of two sequences based on matching keys. The default equality comparer is used to compare keys. (Defined by Enumerable.)
	Join<TEntity, TInner, TKey, TResult>(IEnumerable<TInner>, Func<TEntity, TKey>, Func<TInner, TKey>, Func<TEntity, TInner, TResult>, IEqualityComparer<TKey>)	Overloaded. Correlates the elements of two sequences based on matching keys. A specified IEqualityComparer<T> is used to compare keys. (Defined by Enumerable.)
	Last<TEntity>()	Overloaded. Returns the last element of a sequence. (Defined by Enumerable.)
	Last<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns the last element of a sequence that satisfies a specified condition. (Defined by Enumerable.)
	LastOrDefault<TEntity>()	Overloaded. Returns the last element of a sequence, or a default value if the sequence contains no elements. (Defined by Enumerable.)
	LastOrDefault<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns the last element of a sequence that satisfies a condition or a default value if no such element is found. (Defined by Enumerable.)
	LongCount<TEntity>()	Overloaded. Returns an Int64 that represents the total number of elements in a sequence. (Defined by Enumerable.)
	LongCount<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns an Int64 that represents how many elements in a sequence satisfy a condition. (Defined by Enumerable.)
	Max<TEntity>()	Overloaded. Returns the maximum value in a generic sequence. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Decimal>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Decimal value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Nullable<Decimal>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Decimal value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Double>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Double value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Nullable<Double>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Double value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Int32>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int32 value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Nullable<Int32>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int32 value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Int64>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Int64 value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Nullable<Int64>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Int64 value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Single>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum Single value. (Defined by Enumerable.)
	Max<TEntity>(Func<TEntity, Nullable<Single>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the maximum nullable Single value. (Defined by Enumerable.)
	Max<TEntity, TResult>(Func<TEntity, TResult>)	Overloaded. Invokes a transform function on each element of a generic sequence and returns the maximum resulting value. (Defined by Enumerable.)
	Min<TEntity>()	Overloaded. Returns the minimum value in a generic sequence. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Decimal>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Decimal value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Nullable<Decimal>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Decimal value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Double>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Double value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Nullable<Double>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Double value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Int32>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int32 value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Nullable<Int32>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int32 value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Int64>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Int64 value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Nullable<Int64>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Int64 value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Single>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum Single value. (Defined by Enumerable.)
	Min<TEntity>(Func<TEntity, Nullable<Single>>)	Overloaded. Invokes a transform function on each element of a sequence and returns the minimum nullable Single value. (Defined by Enumerable.)
	Min<TEntity, TResult>(Func<TEntity, TResult>)	Overloaded. Invokes a transform function on each element of a generic sequence and returns the minimum resulting value. (Defined by Enumerable.)
	OfType<TResult>	Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)
	OrderBy<TEntity, TKey>(Func<TEntity, TKey>)	Overloaded. Sorts the elements of a sequence in ascending order according to a key. (Defined by Enumerable.)
	OrderBy<TEntity, TKey>(Func<TEntity, TKey>, IComparer<TKey>)	Overloaded. Sorts the elements of a sequence in ascending order by using a specified comparer. (Defined by Enumerable.)
	OrderByDescending<TEntity, TKey>(Func<TEntity, TKey>)	Overloaded. Sorts the elements of a sequence in descending order according to a key. (Defined by Enumerable.)
	OrderByDescending<TEntity, TKey>(Func<TEntity, TKey>, IComparer<TKey>)	Overloaded. Sorts the elements of a sequence in descending order by using a specified comparer. (Defined by Enumerable.)
	Reverse<TEntity>	Inverts the order of the elements in a sequence. (Defined by Enumerable.)
	Select<TEntity, TResult>(Func<TEntity, TResult>)	Overloaded. Projects each element of a sequence into a new form. (Defined by Enumerable.)
	Select<TEntity, TResult>(Func<TEntity, Int32, TResult>)	Overloaded. Projects each element of a sequence into a new form by incorporating the element's index. (Defined by Enumerable.)
	SelectMany<TEntity, TResult>(Func<TEntity, IEnumerable<TResult>>)	Overloaded. Projects each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence. (Defined by Enumerable.)
	SelectMany<TEntity, TResult>(Func<TEntity, Int32, IEnumerable<TResult>>)	Overloaded. 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. (Defined by Enumerable.)
	SelectMany<TEntity, TCollection, TResult>(Func<TEntity, Int32, IEnumerable<TCollection>>, Func<TEntity, TCollection, TResult>)	Overloaded. 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. (Defined by Enumerable.)
	SelectMany<TEntity, TCollection, TResult>(Func<TEntity, IEnumerable<TCollection>>, Func<TEntity, TCollection, TResult>)	Overloaded. 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. (Defined by Enumerable.)
	SequenceEqual<TEntity>(IEnumerable<TEntity>)	Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type. (Defined by Enumerable.)
	SequenceEqual<TEntity>(IEnumerable<TEntity>, IEqualityComparer<TEntity>)	Overloaded. Determines whether two sequences are equal by comparing their elements by using a specified IEqualityComparer<T>. (Defined by Enumerable.)
	Single<TEntity>()	Overloaded. Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence. (Defined by Enumerable.)
	Single<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists. (Defined by Enumerable.)
	SingleOrDefault<TEntity>()	Overloaded. 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. (Defined by Enumerable.)
	SingleOrDefault<TEntity>(Func<TEntity, Boolean>)	Overloaded. 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. (Defined by Enumerable.)
	Skip<TEntity>	Bypasses a specified number of elements in a sequence and then returns the remaining elements. (Defined by Enumerable.)
	SkipWhile<TEntity>(Func<TEntity, Boolean>)	Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. (Defined by Enumerable.)
	SkipWhile<TEntity>(Func<TEntity, Int32, Boolean>)	Overloaded. 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. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Decimal>)	Overloaded. Computes the sum of the sequence of Decimal values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Nullable<Decimal>>)	Overloaded. 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. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Double>)	Overloaded. Computes the sum of the sequence of Double values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Nullable<Double>>)	Overloaded. 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. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Int32>)	Overloaded. Computes the sum of the sequence of Int32 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Nullable<Int32>>)	Overloaded. 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. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Int64>)	Overloaded. Computes the sum of the sequence of Int64 values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Nullable<Int64>>)	Overloaded. 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. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Single>)	Overloaded. Computes the sum of the sequence of Single values that are obtained by invoking a transform function on each element of the input sequence. (Defined by Enumerable.)
	Sum<TEntity>(Func<TEntity, Nullable<Single>>)	Overloaded. 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. (Defined by Enumerable.)
	Take<TEntity>	Returns a specified number of contiguous elements from the start of a sequence. (Defined by Enumerable.)
	TakeWhile<TEntity>(Func<TEntity, Boolean>)	Overloaded. Returns elements from a sequence as long as a specified condition is true. (Defined by Enumerable.)
	TakeWhile<TEntity>(Func<TEntity, Int32, Boolean>)	Overloaded. 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. (Defined by Enumerable.)
	ToArray<TEntity>	Creates an array from a IEnumerable<T>. (Defined by Enumerable.)
	ToDictionary<TEntity, TKey>(Func<TEntity, TKey>)	Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function. (Defined by Enumerable.)
	ToDictionary<TEntity, TKey>(Func<TEntity, TKey>, IEqualityComparer<TKey>)	Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function and key comparer. (Defined by Enumerable.)
	ToDictionary<TEntity, TKey, TElement>(Func<TEntity, TKey>, Func<TEntity, TElement>)	Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to specified key selector and element selector functions. (Defined by Enumerable.)
	ToDictionary<TEntity, TKey, TElement>(Func<TEntity, TKey>, Func<TEntity, TElement>, IEqualityComparer<TKey>)	Overloaded. Creates a Dictionary<TKey, TValue> from an IEnumerable<T> according to a specified key selector function, a comparer, and an element selector function. (Defined by Enumerable.)
	ToList<TEntity>	Creates a List<T> from an IEnumerable<T>. (Defined by Enumerable.)
	ToLookup<TEntity, TKey>(Func<TEntity, TKey>)	Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function. (Defined by Enumerable.)
	ToLookup<TEntity, TKey>(Func<TEntity, TKey>, IEqualityComparer<TKey>)	Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function and key comparer. (Defined by Enumerable.)
	ToLookup<TEntity, TKey, TElement>(Func<TEntity, TKey>, Func<TEntity, TElement>)	Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to specified key selector and element selector functions. (Defined by Enumerable.)
	ToLookup<TEntity, TKey, TElement>(Func<TEntity, TKey>, Func<TEntity, TElement>, IEqualityComparer<TKey>)	Overloaded. Creates a Lookup<TKey, TElement> from an IEnumerable<T> according to a specified key selector function, a comparer and an element selector function. (Defined by Enumerable.)
	Union<TEntity>(IEnumerable<TEntity>)	Overloaded. Produces the set union of two sequences by using the default equality comparer. (Defined by Enumerable.)
	Union<TEntity>(IEnumerable<TEntity>, IEqualityComparer<TEntity>)	Overloaded. Produces the set union of two sequences by using a specified IEqualityComparer<T>. (Defined by Enumerable.)
	Where<TEntity>(Func<TEntity, Boolean>)	Overloaded. Filters a sequence of values based on a predicate. (Defined by Enumerable.)
	Where<TEntity>(Func<TEntity, Int32, Boolean>)	Overloaded. Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function. (Defined by Enumerable.)

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Explicit Interface Implementations

	Name	Description
	ICollection.CopyTo	For a description of this member, see CopyTo.
	ICollection<TEntity>.IsReadOnly	For a description of this member, see IsReadOnly.
	ICollection.IsSynchronized	For a description of this member, see IsSynchronized.
	ICollection.SyncRoot	For a description of this member, see SyncRoot.
	IEnumerable.GetEnumerator	For a description of this member, see IEnumerable.GetEnumerator.
	IList.Add	For a description of this member, see IList.Add.
	IList.Contains	For a description of this member, see IList.Contains.
	IList.IndexOf	For a description of this member, see IList.IndexOf.
	IList.Insert	For a description of this member, see Insert.
	IList.IsFixedSize	For a description of this member, see IsFixedSize.
	IList.IsReadOnly	For a description of this member, see IsReadOnly.
	IList.Item	For a description of this member, see Item.
	IList.Remove	For a description of this member, see Remove.

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Remarks

This class is used in combination with EntityRef<TEntity>.

Topic	Location
How to: Map Database Relationships (LINQ to SQL)	LINQ to SQL
Object States and Change-Tracking (LINQ to SQL)	LINQ to SQL
Remote vs. Local Query Execution (LINQ to SQL)	LINQ to SQL
How to: Map Database Relationships (LINQ to SQL)	LINQ to SQL
Object States and Change-Tracking (LINQ to SQL)	LINQ to SQL
Remote vs. Local Query Execution (LINQ to SQL)	LINQ to SQL

Version Information

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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