关闭所有应用程序，然后单击X Winform。

Question

I'm trying to change the names of the datagrid and labels in Form2 from Form1 based on the selection.

private void button1_Click_1(object sender, EventArgs e)
        {
            this.Hide();

            Form2 frm = new Form2();
            frm.Show();


        }

        private void button2_Click(object sender, EventArgs e)
        {
            Form2 frm = new Form2();

            frm.dataGridView1.Columns["FirstName"].HeaderText = "Prenom";
            frm.dataGridView1.Columns["LastName"].HeaderText = "Nom";


            this.Hide();
            frm.Show();
        }

The above approach is working fine for me but I have a problem. When I click on X in the second/Form 2 it's just closing the Form2 not the Form1 . How can close all the application when i click on the X .

Is there any better way of doing this??? The reason why i'm not using I'm using Telerik and I don't find any option to add resource file in that. Please correct me if i'm wrong. Thank you.

Answer 1

You simply need to attach an event handler to the Closed event of the newly created form so that it closes the main form when it's closed:

private void button1_Click_1(object sender, EventArgs e)
{
    this.Hide();

    Form2 frm = new Form2();
    frm.FormClosed += (_, args) => this.Close(); //Added this method
    frm.Show();
}

Add that same method to the other click handler as well.

Answer 2

The easiest way to close an application is to call the static method: Application.Exit

Another method if you only want to close one single form would be to add a handler for the FormClosing event and close the main form there.