GridView合并单元格的简单方法

 

代码

   
     

    
      
    
      string
    
       _tempvalue
    
      =
    
      ""
    
      ;
 
    
      2
    
       
    
      int
    
       _temprowspan 
    
      =
    
       
    
      1
    
      ;
 
    
      3
    
       TableCell _temptablecell
    
      =
    
      null
    
      ;
 
    
      4
    
       
 
    
      5
    
       
    
      protected
    
       
    
      void
    
       GridView1_RowDataBound(
    
      object
    
       sender, GridViewRowEventArgs e)
 
    
      6
    
       {
 
    
      7
    
       
 
    
      8
    
       
    
      if
    
       (e.Row.RowType 
    
      ==
    
       DataControlRowType.DataRow 
    
      ||
    
       e.Row.RowType 
    
      ==
    
       DataControlRowType.Footer)
 
    
      9
    
       {

    
      10
    
       
    
      if
    
       (e.Row.Cells[
    
      0
    
      ].Text 
    
      ==
    
       _tempvalue)

    
      11
    
       {

    
      12
    
       _temprowspan
    
      ++
    
      ;

    
      13
    
       e.Row.Cells.Remove(e.Row.Cells[
    
      0
    
      ]);

    
      14
    
       }

    
      15
    
       
    
      else
    
      

    
      16
    
       {

    
      17
    
       
    
      if
    
       (_temprowspan 
    
      !=
    
       
    
      1
    
      )

    
      18
    
       _temptablecell.RowSpan 
    
      =
    
       _temprowspan;

    
      19
    
       

    
      20
    
       _tempvalue 
    
      =
    
       e.Row.Cells[
    
      0
    
      ].Text;

    
      21
    
       _temptablecell 
    
      =
    
       e.Row.Cells[
    
      0
    
      ];

    
      22
    
       _temprowspan 
    
      =
    
       
    
      1
    
      ;

    
      23
    
       }

    
      24
    
       }

    
      25
    
       }

   
     

 

//   <summary>   

    ///   合并GridView列中相同的行   

    ///   </summary>   

    ///   <param   name="GridView1">GridView对象</param>   

    ///   <param   name="cellNum">需要合并的列</param>   

    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;

                }

            }

        }

    } 



    ///   <summary>   

    ///   根据条件列合并GridView列中相同的行   

    ///   </summary>   

    ///   <param   name="GridView1">GridView对象</param>   

    ///   <param   name="cellNum">需要合并的列</param>

    ///   ///   <param   name="cellNum2">条件列(根据某条件列还合并)</param>

    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。