C#

private void button2_Click(object sender, System.EventArgs e)
{
	WindowsApplication1.frmDialog dialog = new WindowsApplication1.frmDialog();
	dialog.Closed += new EventHandler (vShowChild); //NEW LINE
	dialog.ShowDialog();
}

//NEW METHOD
private void vShowChild(object sender, EventArgs e)
{
	WindowsApplication1.frmChild child = new WindowsApplication1.frmChild(this);
	child.Show();			
}

private void button1_Click(object sender, System.EventArgs e)
{
	// What should i write here to show the child form
	// and also to close this form after the child form shows??
        this.Close(); //NEW LINE
}