Closing a form

How can I close a form, which has my start point in it, without the application closing?

I believe you can't (haven't checked this yet).

this?

just converted the inspired by dynamic_sysop code.

frmMain

PHP Code:

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      static void Main()
      {
         frmMain f=new frmMain();
         f.Show();
         Application.Run();
      }

      private void button1_Click(object sender, System.EventArgs e)
      {
         frmIDontKnow f=new frmIDontKnow(this);
         f.Show();
      }

      private void frmMain_Closing(object sender, System.ComponentModel.CancelEventArgs e)
      {
         Application.Exit();
      } 


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frmIDontKnow

PHP Code:

---

      Form f;
        public frmIDontKnow(Form f)
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

         this.f=f;

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

      private void button1_Click(object sender, System.EventArgs e)
      {
         f.Close();
      }

      private void frmIDontKnow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
      {
         Application.Exit();
      } 


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hope this helps. if not, sorry. :(