GrdView合并单元格

 using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/// <summary>
/// GridViewMain 的摘要说明
/// </summary>
public class GridViewMain
{
    public GridViewMain()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
    /// <summary>
    /// 合并单元格
    /// </summary>
    /// <param name="gridView">要合并单元格的表单</param>
    /// <param name="ArryJudgeCell">判断的列</param>
    /// <param name="ArryCellNum">要合并的列</param>
    public static void DoUniteGroupRowsGrid(GridView gridView, int[] ArryJudgeCell, int[] ArryCellNum)
    {
        int i = 0, rowSpanNum = 1;

        bool flagSame = true;

        while (i < gridView.Rows.Count - 1)
        {
            // 得到当前行
            GridViewRow gvrThis = gridView.Rows[i];

            for (++i; i < gridView.Rows.Count; i++)
            {
                GridViewRow gvrNext = gridView.Rows[i];

                for (int j = 0; j < ArryJudgeCell.Length; j++)
                {
                    flagSame = true;

                    if (gvrThis.Cells[ArryJudgeCell[j]].Text != gvrNext.Cells[ArryJudgeCell[j]].Text)
                    {
                        flagSame = false;

                        break;
                    }
                }

                if (flagSame)
                {
                    for (int k = 0; k < ArryCellNum.Length; k++)
                    {
                        gvrNext.Cells[ArryCellNum[k]].Visible = false;
                    }

                    rowSpanNum++;
                }
                else
                {
                    for (int k = 0; k < ArryCellNum.Length; k++)
                    {
                        gvrThis.Cells[ArryCellNum[k]].RowSpan = rowSpanNum;
                    }
                    rowSpanNum = 1;
                    break;
                }

                if (i == gridView.Rows.Count - 1)
                {
                    for (int k = 0; k < ArryCellNum.Length; k++)
                    {
                        gvrThis.Cells[ArryCellNum[k]].RowSpan = rowSpanNum;
                    }
                }
            }
        }
    }
}
//********************************************使用方法***************************

  /// <summary>
    /// 合并收货单货物的单元格
    /// </summary>
    private void doUniteCargoInListGroupRows()
    {
        //判断收货单编号和供应商名称,合并供应商名称
        int[] ArryJudgeCell2 = new int[2];
        ArryJudgeCell2[0] = 1;//合并单元格所用的判断列
        ArryJudgeCell2[1] = 5;

        int[] ArryCellNum2 = new int[1]; //所要合并的列
        ArryCellNum2[0] = 5;
        GridViewMain.DoUniteGroupRowsGrid(CargoInList, ArryJudgeCell2, ArryCellNum2);

        //合并单元格
        int[] ArryJudgeCell = new int[1];
        ArryJudgeCell[0] = 1;//合并单元格所用的判断列

        int[] ArryCellNum = new int[4]; //所要合并的列
        ArryCellNum[0] = 1;
        ArryCellNum[1] = 2;
        ArryCellNum[2] = 3;
        ArryCellNum[3] = 4;
        GridViewMain.DoUniteGroupRowsGrid(CargoInList, ArryJudgeCell, ArryCellNum);
    }