MethodInvoker Delegate
Represents a delegate that can execute any method in managed code that is declared void and takes no parameters.
Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
MethodInvoker provides a simple delegate that is used to invoke a method with a void parameter list. This delegate can be used when making calls to a control's Invoke method, or when you need a simple delegate but do not want to define one yourself.
The following code example demonstrates how to use a MethodInvoker to call a method that updates the title bar of the application form.
public partial class Form1 : Form { public Form1() { // Create a timer that will call the ShowTime method every second. var timer = new System.Threading.Timer(ShowTime, null, 0, 1000); } private void ShowTime(object x) { // Don't do anything if the form's handle hasn't been created // or the form has been disposed. if (!this.IsHandleCreated && !this.IsDisposed) return; // Invoke an anonymous method on the thread of the form. this.Invoke((MethodInvoker) delegate { // Show the current time in the form's title bar. this.Text = DateTime.Now.ToLongTimeString(); }); } }
The following code example demonstrates how to use the MethodInvoker delegate to synchronize a call to a control's thread.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
