public new void Hide()
{
this.Controls.Clear();
if(this._panel != null) {
this._panel.Controls.Clear();
this._panel = null;
}
base.Hide();
Current = null;
}
public new void Show()
{
base.Show();
if (this.Parent != null)
this.Size = this.Parent.ClientSize;
InitializeComponent();
Invalidate();
_panel.Invalidate();
_panel.BringToFront();
Current = this;
}