Expression.TypeIs Method (Expression, Type)
.NET Framework (current version)
Creates a TypeBinaryExpression.
Assembly: System.Core (in System.Core.dll)
Parameters
- expression
-
Type:
System.Linq.Expressions.Expression
An Expression to set the Expression property equal to.
- type
-
Type:
System.Type
A Type to set the TypeOperand property equal to.
Return Value
Type: System.Linq.Expressions.TypeBinaryExpressionA TypeBinaryExpression for which the NodeType property is equal to TypeIs and for which the Expression and TypeOperand properties are set to the specified values.
| Exception | Condition |
|---|---|
| ArgumentNullException | expression or type is null. |
The Type property of the resulting UnaryExpression represents Boolean.
The following example demonstrates how to use the TypeIs(Expression, Type) method to create a TypeBinaryExpression that represents a type test of a string value against the Int32 type.
// Create a TypeBinaryExpression that represents a // type test of the string "spruce" against the 'int' type. System.Linq.Expressions.TypeBinaryExpression typeBinaryExpression = System.Linq.Expressions.Expression.TypeIs( System.Linq.Expressions.Expression.Constant("spruce"), typeof(int)); Console.WriteLine(typeBinaryExpression.ToString()); // This code produces the following output: // // ("spruce" Is Int32)
Universal Windows Platform
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
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
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