ASP.NET 2.0中GridView无限层复杂表头的实现

实现方法就是给单元格填充我们想要的格式代码。

C#

<% @ Page Language = " C# "  AutoEventWireup = " true "   %>

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >

< script  runat ="server" >
   //  计算数据，完全可以从数据看取得
  ICollection CreateDataSource( )
  {
    System.Data.DataTable dt  =   new  System.Data.DataTable();
    System.Data.DataRow dr;
    dt.Columns.Add( new  System.Data.DataColumn( " 学生班级 " ,  typeof (System.String)));
    dt.Columns.Add( new  System.Data.DataColumn( " 学生姓名 " ,  typeof (System.String)));
    dt.Columns.Add( new  System.Data.DataColumn( " 语文 " ,  typeof (System.Decimal)));
    dt.Columns.Add( new  System.Data.DataColumn( " 数学 " ,  typeof (System.Decimal)));
    dt.Columns.Add( new  System.Data.DataColumn( " 英语 " ,  typeof (System.Decimal)));
    dt.Columns.Add( new  System.Data.DataColumn( " 计算机 " ,  typeof (System.Decimal)));

     for  ( int  i  =   0 ; i  <   8 ; i ++ )
    {
      System.Random rd  =   new  System.Random(Environment.TickCount  *  i); ;
      dr  =  dt.NewRow();
      dr[ 0 ]  =   " 班级 "   +  i.ToString();
      dr[ 1 ]  =   " 学生 "   +  i.ToString();
      dr[ 2 ]  =  System.Math.Round(rd.NextDouble()  *   100 ,  2 );
      dr[ 3 ]  =  System.Math.Round(rd.NextDouble()  *   100 ,  2 );
      dr[ 4 ]  =  System.Math.Round(rd.NextDouble()  *   100 ,  2 );
      dr[ 5 ]  =  System.Math.Round(rd.NextDouble()  *   100 ,  2 );
      dt.Rows.Add(dr);
    }
    System.Data.DataView dv  =   new  System.Data.DataView(dt);
     return  dv;
  }

  protected  void  Page_Load( object sender, EventArgs e )
  {
     if  ( ! IsPostBack)
    {
      GridView1.BorderColor  =  System.Drawing.Color.DarkOrange;
      GridView1.DataSource  =  CreateDataSource();
      GridView1.DataBind();
    }
  }

  protected  void  GridView1_RowCreated( object sender, GridViewRowEventArgs e )
  {

     if  (e.Row.RowType  ==  DataControlRowType.Header)
    {
       // 创建一个GridViewRow，相当于表格的 TR 一行
      GridViewRow rowHeader  =   new  GridViewRow( 0 ,  0 , DataControlRowType.Header, DataControlRowState.Normal);
      string HeaderBackColor  =   " #EDEDED " ;
      rowHeader.BackColor  =  System.Drawing.ColorTranslator.FromHtml(HeaderBackColor);

       // 实现确定要显示的表头样式，也可以通过计算生成

       //     <tr>
       //       <td rowspan='2'>关键单元格</td>
       //       <td colspan='2'>表头文字</td>
       //       <td colspan='2'>表头文字</td>
       //       <td>表头文字</td>
       //       </tr>
       //       <tr bgcolor='#FFF'>
       //       <td colspan='2'>表头文字</td>
       //       <td rowspan='2'>表头文字</td>
       //       <td colspan='2'>表头文字</td>
       //       </tr>
       //       <tr bgcolor='#FFF'>
       //       <td>表头文字</td>
       //       <td>表头文字</td>
       //       <td>表头文字</td>
       //       <td>表头文字</td>
       //       <td>表头文字</td>";
       //    </tr>
       //  上面的样式可以设置斜线

      Literal newCells  =   new  Literal();
      newCells.Text  =  @ " 表头文字1</th>
                  <th colspan='2'>表头文字2</th>
                  <th colspan='2'>表头文字3</th>
                  <th>表头文字4</th>
                  </tr>
                  <tr bgcolor=' "   +  HeaderBackColor  +   " '> " ;
      newCells.Text  +=  @ "                          
                  <th colspan='2'>表头文字5</th>
                  <th rowspan='2'>表头文字6</th>
                  <th colspan='2'>表头文字7</th>
                  </tr>
                  <tr bgcolor=' "   +  HeaderBackColor  +   " '> " ;
      newCells.Text  +=  @ "   
                  <th>表头文字8</th>
                  <th>表头文字9</th>
                  <th>表头文字10</th>
                  <th>表头文字11</th>
                  <th>表头文字12 " ;

      TableCellCollection cells  =  e.Row.Cells;
      TableHeaderCell headerCell  =   new  TableHeaderCell();
       // 下面的属性设置与 <td rowspan='2'>关键单元格</td> 要一致
      headerCell.RowSpan  =   2 ;
      headerCell.Controls.Add(newCells);
      rowHeader.Cells.Add(headerCell);

      rowHeader.Cells.Add(headerCell);
      rowHeader.Visible  =   true ;

       // 添加到 GridView1
      GridView1.Controls[ 0 ].Controls.AddAt( 0 , rowHeader);
    }
  }

  protected  void  GridView1_RowDataBound( object sender, GridViewRowEventArgs e )
  {
     if  (e.Row.RowType  ==  DataControlRowType.Header)
    {
      e.Row.Attributes.Add( " style " ,  " background:#9999FF;color:#FFFFFF;font-size:14px " );
    }
     else
    {
      e.Row.Attributes.Add( " style " ,  " background:#FFF " );
    }
  }
  
</ script >

< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head >
   < title > 为 GridView 添加多层表头 </ title >
</ head >
< body >
   < form  id ="Form1"  runat ="server" >
     < asp:GridView  ID ="GridView1"  runat ="server"  CellSpacing ="1"  CellPadding ="3"  Font-Size ="12px"
      Width ="600px"  BackColor ="#000000"  BorderWidth ="0"  OnRowDataBound ="GridView1_RowDataBound"
      OnRowCreated ="GridView1_RowCreated" >
     </ asp:GridView >
   </ form >
</ body >
</ html >

VB.NET

<% @ Page Language = " VB "  AutoEventWireup = " true "   %>

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >

< script  runat ="server" >
  Function CreateDataSource() As ICollection
    Dim dt As System.Data.DataTable  =  New System.Data.DataTable
    Dim dr As System.Data.DataRow
    dt.Columns.Add(New System.Data.DataColumn( " 学生班级 " , GetType(System.String)))
    dt.Columns.Add(New System.Data.DataColumn( " 学生姓名 " , GetType(System.String)))
    dt.Columns.Add(New System.Data.DataColumn( " 语文 " , GetType(System.Decimal)))
    dt.Columns.Add(New System.Data.DataColumn( " 数学 " , GetType(System.Decimal)))
    dt.Columns.Add(New System.Data.DataColumn( " 英语 " , GetType(System.Decimal)))
    dt.Columns.Add(New System.Data.DataColumn( " 计算机 " , GetType(System.Decimal)))
    Dim i As Integer  =   0
    While i  <   8
      Dim rd As System.Random  =  New System.Random(Environment.TickCount  *  i)

      dr  =  dt.NewRow
      dr( 0 )  =   " 班级 "   +  i.ToString
      dr( 1 )  =   " 学生 "   +  i.ToString
      dr( 2 )  =  System.Math.Round(rd.NextDouble  *   100 ,  2 )
      dr( 3 )  =  System.Math.Round(rd.NextDouble  *   100 ,  2 )
      dr( 4 )  =  System.Math.Round(rd.NextDouble  *   100 ,  2 )
      dr( 5 )  =  System.Math.Round(rd.NextDouble  *   100 ,  2 )
      dt.Rows.Add(dr)
      System.Math.Min(System.Threading.Interlocked.Increment(i), i  -   1 )
    End While
    Dim dv As System.Data.DataView  =  New System.Data.DataView(dt)
    Return dv
  End Function

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    If Not IsPostBack Then
      GridView1.BorderColor  =  System.Drawing.Color.DarkOrange
      GridView1.DataSource  =  CreateDataSource()
      GridView1.DataBind()
    End If
  End Sub

  Protected Sub GridView1_RowCreated(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    If e.Row.RowType  =  DataControlRowType.Header Then
      Dim rowHeader As GridViewRow  =  New GridViewRow( 0 ,  0 , DataControlRowType.Header, DataControlRowState.Normal)
      Dim HeaderBackColor As String  =   " #EDEDED "
      rowHeader.BackColor  =  System.Drawing.ColorTranslator.FromHtml(HeaderBackColor)
      Dim newCells As Literal  =  New Literal
      newCells.Text  =   " 表头文字1</th> "   +  _
                       "  <th colspan='2'>表头文字2</th> "   +  _
                       "  <th colspan='2'>表头文字3</th> "   +  _
                       "  <th>表头文字4</th> "   +  _
                       "  </tr> "   +  _
                       "  <tr bgcolor=' "   +  HeaderBackColor  +   " '> "   +  _
                       "   <th colspan='2'>表头文字5</th> "   +  _
                       "   <th rowspan='2'>表头文字6</th> "   +  _
                       "  <th colspan='2'>表头文字7</th> "   +  _
                       "  </tr> "   +  _
                       "  <tr bgcolor=' "   +  HeaderBackColor  +   " '> "   +  _
                       "   <th>表头文字8</th> "   +  _
                       "   <th>表头文字9</th> "   +  _
                       "   <th>表头文字10</th> "   +  _
                       "   <th>表头文字11</th> "   +  _
                       "   <th>表头文字12 "
      Dim cells As TableCellCollection  =  e.Row.Cells
      Dim headerCell As TableHeaderCell  =  New TableHeaderCell
      headerCell.RowSpan  =   2
      headerCell.Controls.Add(newCells)
      rowHeader.Cells.Add(headerCell)
      rowHeader.Cells.Add(headerCell)
      rowHeader.Visible  =  True
      GridView1.Controls( 0 ).Controls.AddAt( 0 , rowHeader)
    End If
  End Sub

  Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
    If e.Row.RowType  =  DataControlRowType.Header Then
      e.Row.Attributes.Add( " style " ,  " background:#9999FF;color:#FFFFFF;font-size:14px " )
    Else
      e.Row.Attributes.Add( " style " ,  " background:#FFF " )
    End If
  End Sub
  
</ script >

< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head >
   < title > 为 GridView 添加多层表头 </ title >
</ head >
< body >
   < form  id ="Form1"  runat ="server" >
     < asp:GridView  ID ="GridView1"  runat ="server"  CellSpacing ="1"  CellPadding ="3"  Font-Size ="12px"
      Width ="600px"  BackColor ="#000000"  BorderWidth ="0"  OnRowDataBound ="GridView1_RowDataBound"
      OnRowCreated ="GridView1_RowCreated" >
     </ asp:GridView >
   </ form >
</ body >
</ html >