Queryable.Cast<'TResult> Method (IQueryable)
Converts the elements of an IQueryable to the specified type.
Assembly: System.Core (in System.Core.dll)
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