///   合并GridView列中相同的行       ///          ///   GridView对象       ///   需要合并的列       public static void GroupRows(GridView GridView1, int cellNum)    {        int i = 0, rowSpanNum = 1;        while (i < GridView1.Rows.Count - 1)        {            GridViewRow gvr = GridView1.Rows[i];            for (++i; i < GridView1.Rows.Count; i++)            {                GridViewRow gvrNext = GridView1.Rows[i];                if (gvr.Cells[cellNum].Text == gvrNext.Cells[cellNum].Text)                {                    gvrNext.Cells[cellNum].Visible = false;                    rowSpanNum++;                }                else                {                    gvr.Cells[cellNum].RowSpan = rowSpanNum;                    rowSpanNum = 1;                    break;                }                 if (i == GridView1.Rows.Count - 1)                {                    gvr.Cells[cellNum].RowSpan = rowSpanNum;                }            }        }    }     ///          ///   根据条件列合并GridView列中相同的行       ///          ///   GridView对象       ///   需要合并的列    ///   ///   条件列(根据某条件列还合并)    public static void GroupRows(GridView GridView1, int cellNum, int cellNum2)    {        int i = 0, rowSpanNum = 1;        while (i < GridView1.Rows.Count - 1)        {            GridViewRow gvr = GridView1.Rows[i];            for (++i; i < GridView1.Rows.Count; i++)            {                GridViewRow gvrNext = GridView1.Rows[i];                if (gvr.Cells[cellNum].Text + gvr.Cells[cellNum2].Text == gvrNext.Cells[cellNum].Text + gvrNext.Cells[cellNum2].Text)                {                    gvrNext.Cells[cellNum].Visible = false;                    rowSpanNum++;                }                else                {                    gvr.Cells[cellNum].RowSpan = rowSpanNum;                    rowSpanNum = 1;                    break;                }                 if (i == GridView1.Rows.Count - 1)                {                    gvr.Cells[cellNum].RowSpan = rowSpanNum;                }            }        }    }   第二个方法只是在第一个方法的修改了一点点, 在判断单元格的时候，加上了一个条件列：if (gvr.Cells[cellNum].Text + gvr.Cells[cellNum2].Text == gvrNext.Cells[cellNum].Text + gvrNext.Cells[cellNum2].Text)。当然，第二个方法还可以扩展，根据多个列的条件来合并。