Hide default installer Windows in custom installer.

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C#

Hi All,

I am creating Custom install class which call my own forms.
I want to hide installer process window when call my own created form.
Mu custom installer class like

[RunInstaller(true)]
    public partial class Installer1 : Installer
    {
        public Installer1()
        {
            InitializeComponent();
        }
        public override void Install(System.Collections.IDictionary stateSaver)
        {
            base.Install(stateSaver);
        }
        private void Installer1_AfterInstall(object sender, InstallEventArgs e)
        {
           Form1 topmostForm = new Form1();
            topmostForm.Focus();
            topmostForm.BringToFront();
            topmostForm.TopMost = true;
            topmostForm.ShowDialog();
      }
}

When topmostForm.ShowDialog() call that time default installer window is also display. But i want to hide it from task bar also.

Please help me in this.

Thanks in Advance.