Control::OnClick Method
Raises the Click event.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.
The OnClick method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to InheritorsWhen overriding OnClick in a derived class, be sure to call the base class's OnClick method so that registered delegates receive the event.
The following code example demonstrates overriding the OnClick method in a derived class. To run the example, paste the following code after a form class, in the same file. Add a textbox of type SingleClickTextBox to the form.
The following code example shows one of the many uses of the Click event and event handler.
// This example uses the Parent property and the Find method of Control to set // properties on the parent control of a Button and its Form. The example assumes // that a Button control named button1 is located within a GroupBox control. The // example also assumes that the Click event of the Button control is connected to // the event handler method defined in the example. private: void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ ) { // Get the control the Button control is located in. In this case a GroupBox. Control^ control = button1->Parent; // Set the text and backcolor of the parent control. control->Text = "My Groupbox"; control->BackColor = Color::Blue; // Get the form that the Button control is contained within. Form^ myForm = button1->FindForm(); // Set the text and color of the form containing the Button. myForm->Text = "The Form of My Control"; myForm->BackColor = Color::Red; }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.