合并Gridview中的一列相同数据的行

 /// <summary>
   /// 队所有列进行合并
   /// </summary>
   /// <param name="gridview"></param>
    public static void MergerRos(GridView gridview)
    {
        for (int rowIndex = grvGoodsShow.Rows.Count - 2; rowIndex >= 0; rowIndex--)
        {
            GridViewRow row = grvGoodsShow.Rows[rowIndex];
            GridViewRow previousRow = grvGoodsShow.Rows[rowIndex + 1];
            for (int i = 0; i < length; i++)
            {
                if (row.Cells[i].Text == previousRow.Cells[i].Text)
                {
                    row.Cells[i].RowSpan = previousRow.Cells[i].RowSpan < 2 ? 2 :
                                                previousRow.Cells[i].RowSpan + 1;
                    previousRow.Cells[i].Visible = false;
                }
            }
           


        }
    }

 

/// <summary>
    /// 合并某一列数据相同的行
    /// </summary>
    /// <param name="gridview">Gridview</param>
    /// <param name="i">合并的那一列（索引）</param>
    public static void MergerRos(GridView gridview,int i)
    {
        for (int rowIndex = grvGoodsShow.Rows.Count - 2; rowIndex >= 0; rowIndex--)
        {
            GridViewRow row = grvGoodsShow.Rows[rowIndex];
            GridViewRow previousRow = grvGoodsShow.Rows[rowIndex + 1];
            if (row.Cells[i].Text == previousRow.Cells[i].Text)
            {
                row.Cells[i].RowSpan = previousRow.Cells[i].RowSpan < 2 ? 2 :
                                            previousRow.Cells[i].RowSpan + 1;
                previousRow.Cells[i].Visible = false;
            }


        }
    }