Expression::Condition Method (Expression^, Expression^, Expression^)

.NET Framework (current version)

Creates a ConditionalExpression that represents a conditional statement.

Namespace: System.Linq.Expressions
Assembly: System.Core (in System.Core.dll)

Syntax

public:
static ConditionalExpression^ Condition(
	Expression^ test,
	Expression^ ifTrue,
	Expression^ ifFalse
)

Parameters

test: Type: System.Linq.Expressions::Expression^
An Expression to set the Test property equal to.

ifTrue: Type: System.Linq.Expressions::Expression^
An Expression to set the IfTrue property equal to.

ifFalse: Type: System.Linq.Expressions::Expression^
An Expression to set the IfFalse property equal to.

Return Value

Type: System.Linq.Expressions::ConditionalExpression^

A ConditionalExpression that has the NodeType property equal to Conditional and the Test, IfTrue, and IfFalse properties set to the specified values.

Exceptions

Exception	Condition
ArgumentNullException	test or ifTrue or ifFalse is null.
ArgumentException	test.Type is not Boolean. -or- ifTrue.Type is not equal to ifFalse.Type.

Remarks

The Type property of the resulting ConditionalExpression is equal to the Type property of ifTrue.

The following code example shows how to create an expression that represents a conditional statement. If the first argument evaluates to true, the second argument is executed; otherwise, the third argument is executed.

C++

No code example is currently available or this language may not be supported.

Version Information

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