/// <summary>
/// get instance function
/// </summary>
/// <returns></returns>
public static RubricUserControl getInstance()
{
if (instance == null)
{
instance = new RubricUserControl();
}
return(instance);
}
/// <summary>
/// show rubric click event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button4_Click(object sender, EventArgs e)
{
panelHome.Controls.Clear();
panelHome.Controls.Add(RubricUserControl.getInstance());
}