private void ShowUserControls(string UserControlName, DevExpress.XtraEditors.PanelControl PanelName)
{
PanelName.Controls.Clear();
Type t = System.Reflection.Assembly.GetExecutingAssembly().GetType(UserControlName);
UserControl uc = (UserControl)Activator.CreateInstance(t);
uc.Dock = DockStyle.Fill;
uc.Parent = PanelName;
}