asp.net GridView、DataGrid行单元格自动合并

GridView原理和DataGrid一样

<pre name="code" class="csharp">

this.dg_list.DataSource = run.GetDataSet(strSQL.ToString());this.dg_list.DataBind();if (this.dg_list.Items.Count > 0){ this.GroupRows(this.dg_list, 0);}

/// <summary>
        /// 合同号单元格自动合并
        /// </summary>
        /// <param name="gv"></param>
        /// <param name="cellNum"></param>
        protected void GroupRows(DataGrid dg, int cellNum)
        {
            int i = 0, rowSpanNum = 1;
            while (i < dg.Items.Count - 1)
            {
                DataGridItem dgi = dg.Items[i];
                for (++i; i < dg.Items.Count; i++)
                {
                    DataGridItem dgiNext = dg.Items[i];


                    string TypeName = dgi.Cells[cellNum].Text;
                    string Next = dgiNext.Cells[cellNum].Text;


                    if (TypeName == Next)
                    {
                        dgiNext.Cells[cellNum].Visible = false;
                        rowSpanNum++;
                    }
                    else
                    {
                        dgi.Cells[cellNum].RowSpan = rowSpanNum;
                        rowSpanNum = 1;
                        break;
                    }
                    if (i == gv.Rows.Count - 1)
                    {
                        dgi.Cells[cellNum].RowSpan = rowSpanNum;
                    }
                }
            }
        }