Concat(TSource) Method

Queryable::Concat<TSource> Method (IQueryable<TSource>^, IEnumerable<TSource>^)

 

Concatenates two sequences.

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

public:
generic<typename TSource>
[ExtensionAttribute]
static IQueryable<TSource>^ Concat(
	IQueryable<TSource>^ source1,
	IEnumerable<TSource>^ source2
)

Parameters

source1
Type: System.Linq::IQueryable<TSource>^

The first sequence to concatenate.

source2
Type: System.Collections.Generic::IEnumerable<TSource>^

The sequence to concatenate to the first sequence.

Return Value

Type: System.Linq::IQueryable<TSource>^

An IQueryable<T> that contains the concatenated elements of the two input sequences.

Type Parameters

TSource

The type of the elements of the input sequences.

Exception Condition
ArgumentNullException

source1 or source2 is null.

The Concat<TSource>(IQueryable<TSource>^, IEnumerable<TSource>^) method generates a MethodCallExpression that represents calling Concat<TSource>(IQueryable<TSource>^, IEnumerable<TSource>^) itself as a constructed generic method. It then passes the MethodCallExpression to the CreateQuery<TElement>(Expression^) method of the IQueryProvider represented by the Provider property of the source1 parameter.

The query behavior that occurs as a result of executing an expression tree that represents calling Concat<TSource>(IQueryable<TSource>^, IEnumerable<TSource>^) depends on the implementation of the type of the source1 parameter. The expected behavior is that the elements in source2 are concatenated to those of source1 to create a new sequence.

The following code example demonstrates how to use Concat<TSource>(IQueryable<TSource>^, IEnumerable<TSource>^) to concatenate two sequences.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.1
Windows Phone
Available since 8.1
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