Expression::TypeAs Method (Expression^, Type^)
Creates a UnaryExpression that represents an explicit reference or boxing conversion where null is supplied if the conversion fails.
Assembly: System.Core (in System.Core.dll)
Parameters
- expression
-
Type:
System.Linq.Expressions::Expression^
An Expression to set the Operand property equal to.
- type
- Type: System::Type^
Return Value
Type: System.Linq.Expressions::UnaryExpression^A UnaryExpression that has the NodeType property equal to TypeAs and the Operand and Type properties set to the specified values.
| Exception | Condition |
|---|---|
| ArgumentNullException | expression or type is null. |
The Method property of the resulting UnaryExpression is null. The IsLifted and IsLiftedToNull properties are both false.
The following example demonstrates how to use the TypeAs(Expression^, Type^) method to create a UnaryExpression that represents the reference conversion of a non-nullable integer expression to the nullable integer type.
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 7.0
Windows Phone
Available since 8.1