C# .NET - Call a form another one, and close the first

Today I have a lot of questions... Thanks for helping...

1. Registering Form1.Closing event, cancel it and hide the main form

2. Start another thread for the second form:

public static void ThreadProc()

{

    Application.Run(new Form());

}

private void button1_Click(object sender, EventArgs e)

{

    System.Threading.Thread t = new System.Threading.Thread(new System.Threading.ThreadStart(ThreadProc));

    t.Start();

}

You can use the close property of the form wen u open the second form.

then wen u close the second form use the show property of  the first form.

This will work, try this way:

Here SelectCompany is the first form:

         SelectCompany2 is the second form

SelectCompany2 frmSelectCompany = new SelectCompany2();  

In Forn_closed event of the this form write this code:

{

this.Hide();

frmSelectCompany.ShowDialog();

}

In the closed_Form property of Second form write the code to open the Fisrt form:

SelectCompany  sel=new SelectCompany()

In Forn_closed event of the this form write this code:

{

    sel.ShowDialog();

}

Hope this helped you, let me know if u need more help

Dear Friend!

   If you take the following code then it works. This is very simple na!

private void CallMainform()

{

   ActiveForm.Hide();

   Main.MainWindow mainform = new Main.MainWindow();

   DailogResult dr = mainform.ShowDailog();

   ActiveForm.Close();

}