Queryable::Concat<TSource> Method (IQueryable<TSource>^, IEnumerable<TSource>^)
Concatenates two sequences.
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.
Available since 8
.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