How to catch the event of the window close button(red X button on window right top corner) in wpf form?

Question

How can I catch the event of the window close button(red X button on window right top corner) in a WPF form? We have got the closing event, window unloaded event also, but w

Answer 1

if it is pressed confirm button in form2 do action, if it is pressed X-button do nothing:

public class Form2
{
  public bool confirm { get; set; }

    public Form2()
        {
            confirm = false;
            InitializeComponent(); 
        }

   private void Confirm_Button_Click(object sender, RoutedEventArgs e)
    {
       //your code
       confirm = true;
       this.Close();

    }

}

first form:

public void Form2_Closing(object sender, CancelEventArgs e)
        {
            if(Form2.confirm == false) return;

            //your code 
        }