Casts the elements of an IEnumerable to the specified type.
Assemblies: System.Linq (in System.Linq.dll)
System.Core (in System.Core.dll)
[ExtensionAttribute] public: generic<typename TResult> static IEnumerable<TResult>^ Cast( IEnumerable^ source )
The type to cast the elements of source to.
Return ValueType: System.Collections.Generic::IEnumerable<>
An IEnumerable<T> that contains each element of the source sequence cast to the specified type.
Usage NoteIn Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
This method is implemented by using deferred execution. The immediate return value is an object that stores all the information that is required to perform the action. The query represented by this method is not executed until the object is enumerated either by calling its GetEnumerator method directly or by using foreach in Visual C# or For Each in Visual Basic.
The method enables the standard query operators to be invoked on non-generic collections by supplying the necessary type information. For example, ArrayList does not implement IEnumerable<T>, but by calling on the ArrayList object, the standard query operators can then be used to query the sequence.
If an element cannot be cast to type TResult, this method will throw an exception. To obtain only those elements that can be cast to type TResult, use the OfType<TResult> method instead of .
In a query expression, an explicitly typed iteration variable translates to an invocation of . This example shows the syntax for an explicitly typed range variable.
.NET FrameworkSupported in: 4.6, 4.5, 4, 3.5
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
XNA FrameworkSupported in: 3.0
Portable Class LibrarySupported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8