CodeDelegateInvokeExpression Class

 

Represents an expression that raises an event.

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

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

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

NameDescription
System_CAPS_pubmethodCodeDelegateInvokeExpression()

Initializes a new instance of the CodeDelegateInvokeExpression class.

System_CAPS_pubmethodCodeDelegateInvokeExpression(CodeExpression^)

Initializes a new instance of the CodeDelegateInvokeExpression class using the specified target object.

System_CAPS_pubmethodCodeDelegateInvokeExpression(CodeExpression^, array<CodeExpression^>^)

Initializes a new instance of the CodeDelegateInvokeExpression class using the specified target object and parameters.

NameDescription
System_CAPS_pubpropertyParameters

Gets or sets the parameters to pass to the event handling methods attached to the event.

System_CAPS_pubpropertyTargetObject

Gets or sets the event to invoke.

System_CAPS_pubpropertyUserData

Gets the user-definable data for the current object.(Inherited from CodeObject.)

NameDescription
System_CAPS_pubmethodEquals(Object^)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

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.

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

// 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());

.NET Framework
Available since 1.1

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

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