CodeDelegateInvokeExpression Class

.NET Framework (current version)

Other Versions

Represents an expression that raises an event.

Namespace: System.CodeDom
Assembly: System (in System.dll)

Inheritance Hierarchy

System::Object
System.CodeDom::CodeObject
System.CodeDom::CodeExpression
System.CodeDom::CodeDelegateInvokeExpression

Syntax

C++

[SerializableAttribute]
[ClassInterfaceAttribute(ClassInterfaceType::AutoDispatch)]
[ComVisibleAttribute(true)]
public ref class CodeDelegateInvokeExpression : CodeExpression

Constructors

	Name	Description
	CodeDelegateInvokeExpression()	Initializes a new instance of the CodeDelegateInvokeExpression class.
	CodeDelegateInvokeExpression(CodeExpression^)	Initializes a new instance of the CodeDelegateInvokeExpression class using the specified target object.
	CodeDelegateInvokeExpression(CodeExpression^, array<CodeExpression^>^)	Initializes a new instance of the CodeDelegateInvokeExpression class using the specified target object and parameters.

Properties

	Name	Description
	Parameters	Gets or sets the parameters to pass to the event handling methods attached to the event.
	TargetObject	Gets or sets the event to invoke.
	UserData	Gets the user-definable data for the current object.(Inherited from CodeObject.)

Methods

	Name	Description
	Equals(Object^)	Determines whether the specified object is equal to the current object.(Inherited from Object.)
	Finalize()	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)
	GetHashCode()	Serves as the default hash function. (Inherited from Object.)
	GetType()	Gets the Type of the current instance.(Inherited from Object.)
	MemberwiseClone()	Creates a shallow copy of the current Object.(Inherited from Object.)
	ToString()	Returns a string that represents the current object.(Inherited from Object.)

Remarks

CodeDelegateInvokeExpression can be used to represent code that invokes an event. Invoking an event invokes all delegates that are registered with the event using the specified parameters.

The TargetObject property specifies the event to invoke. The Parameters property specifies the parameters to pass to the delegates for the event.

Examples

The following example demonstrates use of a CodeDelegateInvokeExpression to invoke an event named TestEvent.

C++

// Invokes the delegates for an event named TestEvent, passing a local object reference and a new System.EventArgs.
array<CodeExpression^>^temp1 = {gcnew CodeThisReferenceExpression,gcnew CodeObjectCreateExpression( "System.EventArgs", nullptr )};
CodeDelegateInvokeExpression^ invoke1 = gcnew CodeDelegateInvokeExpression( gcnew CodeEventReferenceExpression( gcnew CodeThisReferenceExpression,"TestEvent" ),temp1 );

// A C# code generator produces the following source code for the preceeding example code:
//    this.TestEvent(this, new System.EventArgs());

Version Information

.NET Framework
Available since 1.1

Thread Safety

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.