GridControl绑定并显示主从表。

DataTable dt1 = new DataTable();
            {
                dt1.Columns.Add("编号");
                dt1.Columns.Add("姓名");
                DataRow dr = dt1.NewRow();
                dr[0] = "001";
                dr[1] = "张三";
                dt1.Rows.Add(dr);
                dr = dt1.NewRow();
                dr[0] = "002";
                dr[1] = "李四";
                dt1.Rows.Add(dr);
            }
                DataTable dt2 = new DataTable();
            {
                dt2.Columns.Add("编号");
                dt2.Columns.Add("帐户金额");
                DataRow dr = dt2.NewRow();
                dr[0] = "001";
                dr[1] = "100000";
                dt2.Rows.Add(dr);
                dr = dt2.NewRow();
                dr[0] = "002";
                dr[1] = "2000000";
                dt2.Rows.Add(dr);
            }

            DataSet ds = new DataSet();
            ds.Tables.Add(dt1);
            ds.Tables.Add(dt2);
            DataRelation relation = new DataRelation("帐户信息", ds.Tables[0].Columns["编号"], ds.Tables[1].Columns["编号"]);
            ds.Relations.Add(relation);
            gridControl1.DataSource = ds.Tables[0];

效果图：