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Expression::Call Method (Expression, MethodInfo)

Creates a MethodCallExpression that represents a call to a method that takes no arguments.

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

public:
static MethodCallExpression^ Call(
	Expression^ instance, 
	MethodInfo^ method
)

Parameters

instance
Type: System.Linq.Expressions::Expression

An Expression that specifies the instance for an instance method call (pass nullptr for a static (Shared in Visual Basic) method).

method
Type: System.Reflection::MethodInfo

A MethodInfo to set the Method property equal to.

Return Value

Type: System.Linq.Expressions::MethodCallExpression
A MethodCallExpression that has the NodeType property equal to Call and the Object and Method properties set to the specified values.

ExceptionCondition
ArgumentNullException

method is nullptr.

-or-

instance is nullptr and method represents an instance method.

ArgumentException

instance.Type is not assignable to the declaring type of the method represented by method.

To represent a call to a static (Shared in Visual Basic) method, pass in nullptr for the instance parameter when you call this method.

If method represents an instance method, the Type property of instance must be assignable to the declaring type of the method represented by method.

The Arguments property of the resulting MethodCallExpression is empty. The Type property is equal to the return type of the method represented by method.

The following code example shows how to create an expression that calls a method without arguments.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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