private void btdsxedagui_Click(object sender, EventArgs e) { this.pnthongke.Controls.Clear(); xedagui x = new xedagui(); x.TopLevel = false; this.pnthongke.Controls.Add(x); x.Show(); }
void hienthi() { this.pnthongke.Controls.Clear(); xedagui x = new xedagui(); x.TopLevel = false; this.pnthongke.Controls.Add(x); x.Show(); }