How to close form

Question

Ok, so a Windows Forms class, WindowSettings, and the form has a "Cancel"-button. When the user clicks the button, the dialog DialogSettingsCancel will pop-up up and ask the user if he is sure he wants to perform the action. The dialog has 2 buttons, a "Yes"-button and a "No"-button. If the user clicks the "Yes"-button, I want both DialogSettingsCancel and WindowSettings to be closed.

My button_Click event handler in DialogSettingsCancel:

private void button1_Click(object sender, EventArgs e)
{
    //Code to trigger when the "Yes"-button is pressed.
    WindowSettings settings = new WindowSettings();
    this.Close();
    settings.Close();
}

When I run my application, and go to the settings form, and click the "Cancel"-button, and then click the "Yes"-button, only DialogSettingsCancel closes without closing WindowSettings.

Why won't it work?

I've also tried changing

this.Close();
settings.Close();

to

settings.Close();
this.Close();

But still the same result.

Answer 1

send the WindowSettings as the parameter of the constructor of the DialogSettingsCancel and then on the button1_Click when yes is pressed call the close method of both of them.

public class DialogSettingsCancel
{
    WindowSettings parent;

    public DialogSettingsCancel(WindowSettings settings)
    {
        this.parent = settings;        
    }

    private void button1_Click(object sender, EventArgs e)
    {
        //Code to trigger when the "Yes"-button is pressed.
        this.parent.Close();
        this.Close();
    }
}

Answer 2

Why not use the DialogResult method to close the form?

if(DialogSettingsCancel.ShowDialog() == DialogResult.Yes)
{
     //this will close the form but will keep application open if your 
     //application type is "console" in the properties of the project
     this.Close();
}

For this to work however you will need to do it inside your "WindowSettings" form while you call the DialogSettingsCancel form. Much the same way you would call the OpenFileDialog, or any other Dialog form.