Form window closing event : Form Event « GUI Windows Form « C# / C Sharp

Form window closing event

Form window closing event
  using System;
  using System.Drawing;
  using System.Collections;
  using System.ComponentModel;
  using System.Windows.Forms;
  using System.Data;

  public class Form1 : System.Windows.Forms.Form
    private Button myButton; 

    public Form1()
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(292, 273);
            this.Closing+=new CancelEventHandler(Form_Closing);

      myButton = new Button();
      myButton.Text = "";
      myButton.Location = new System.Drawing.Point(64, 32);
      myButton.Size = new System.Drawing.Size(150, 50);

        public void Form_Closing(object sender,CancelEventArgs cArgs) {
               MessageBox.Show("Form Closing Event....");
               if(sender!=this) {
    static void Main() 
      Application.Run(new Form1());


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