private void LoadData() { var data = context.layDanhSachUserLogin(); DataTable dt = new DataTable(); DataColumn dc0 = new DataColumn("Mã", typeof(string)); DataColumn dc1 = new DataColumn("Tên đăng nhập", typeof(string)); DataColumn dc2 = new DataColumn("Mật khẩu", typeof(string)); DataColumn dc3 = new DataColumn("Quyền", typeof(string)); DataColumn dc4 = new DataColumn("Mã nhân viên", typeof(string)); DataColumn dc5 = new DataColumn("Tên nhân viên", typeof(string)); dt.Columns.Add(dc0); dt.Columns.Add(dc1); dt.Columns.Add(dc2); dt.Columns.Add(dc3); dt.Columns.Add(dc4); dt.Columns.Add(dc5); foreach (var item in data) { DataRow row = dt.NewRow(); row[0] = item.ma.ToString().Trim(); row[1] = item.tendangnhap.ToString().Trim(); row[2] = item.matkhau.ToString().Trim(); row[3] = item.quyen.ToString().Trim(); row[4] = item.manv.ToString().Trim(); row[5] = item.ten.ToString().Trim(); dt.Rows.Add(row); } gridControl.DataSource = dt; gridView1.Columns[0].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; gridView1.Columns[1].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; gridView1.Columns[2].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; gridView1.Columns[3].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; gridView1.Columns[4].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; gridView1.Columns[5].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; }