/// <summary>
/// Handles the Click event of the openToolStripMenuItem control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
FormUtil.ShowOnce <FormMain>();
}
