public void FormC_Show()
{
FormC_DialogResult = DialogResult.None;
formC = new FormC();
formC.Closed += new EventHandler(FormC_Closed);
formC.CustomMessage = "This is FormC. When it closes, " +
"it will call FormB's FormC_Closed event handler, " +
"which will set the FormC_DialogResult property.";
formC.Show();
}
private void Button1_Click(object sender, EventArgs e)
{
var formC = new FormC(_closingFormC);
formC.Show();
}