private void barBtnUser_ItemClick(object sender, ItemClickEventArgs e)
        {
            panelCha.Controls.Clear();
            usMemberManagements frm = new usMemberManagements();

            frm.Dock = System.Windows.Forms.DockStyle.Fill;
            panelCha.Controls.Add(frm);
        }
        private void nBI_QLTV_LinkClicked(object sender, DevExpress.XtraNavBar.NavBarLinkEventArgs e)
        {
            panelCha.Controls.Clear();
            usMemberManagements frm = new usMemberManagements();

            frm.Dock = System.Windows.Forms.DockStyle.Fill;
            panelCha.Controls.Add(frm);
        }