Queryable::Cast<TResult> Method (IQueryable^)
Converts the elements of an IQueryable to the specified type.
Assembly: System.Core (in System.Core.dll)
public: generic<typename TResult> [ExtensionAttribute] static IQueryable<TResult>^ Cast( IQueryable^ source )
Parameters
- source
-
Type:
System.Linq::IQueryable^
The IQueryable that contains the elements to be converted.
Return Value
Type: System.Linq::IQueryable<TResult>^An IQueryable<T> that contains each element of the source sequence converted to the specified type.
Type Parameters
- TResult
The type to convert the elements of source to.
| Exception | Condition |
|---|---|
| ArgumentNullException | source is null. |
| InvalidCastException | An element in the sequence cannot be cast to type TResult. |
The Cast<TResult>(IQueryable^) method generates a MethodCallExpression that represents calling Cast<TResult>(IQueryable^) itself as a constructed generic method. It then passes the MethodCallExpression to the CreateQuery(Expression^) method of the IQueryProvider represented by the Provider property of the source parameter.
The query behavior that occurs as a result of executing an expression tree that represents calling Cast<TResult>(IQueryable^) depends on the implementation of the type of the source parameter. The expected behavior is that it converts the values in source to type TResult.
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