在实际工作中,往往需要合并表格头部的单元格,下面就是一个实现的例子。运行结果如图:

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" >
  ICollection CreateDataSource()
  
{
    System.Data.DataTable dt 
=   new  System.Data.DataTable();
    System.Data.DataRow dr;
    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)));
    
for  ( int  i  =   0 ; i  <   8 ; i ++ )
    
{
      System.Random rd 
=   new  System.Random(Environment.TickCount  *  i); ;
      dr 
=  dt.NewRow();
      dr[
0 =   " 学生 "   +  i.ToString();
      dr[
1 =  System.Math.Round(rd.NextDouble()  *   100 2 );
      dr[
2 =  System.Math.Round(rd.NextDouble()  *   100 2 );
      dr[
3 =  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)
    
{
      GridViewRow rowHeader 
=   new  GridViewRow( 0 0 , DataControlRowType.Header, DataControlRowState.Normal);
      rowHeader.BackColor 
=  System.Drawing.Color.White;
      rowHeader.Font.Bold 
=   true ;

      TableCellCollection cells 
=  e.Row.Cells;
      TableCell headerCell 
=   new  TableCell();
      headerCell.Text 
=   "" ;
      rowHeader.Cells.Add(headerCell);

      headerCell 
=   new  TableCell();
      headerCell.Text 
=   " 学生成绩 " ;
      headerCell.ColumnSpan 
=  cells.Count  -   1 ;
      headerCell.HorizontalAlign 
=  HorizontalAlign.Center;

      rowHeader.Cells.Add(headerCell);
      rowHeader.Visible 
=   true ;
      GridView1.Controls[
0 ].Controls.AddAt( 0 , rowHeader);
    }

  }


  protected 
void  GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
  
{
    e.Row.Attributes.Add(
" style " " background:#FFF " );
  }

</ script >

< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head >
  
< title > 合并 GridView 的表头单元格 </ title >
</ head >
< body >
  
< form  id ="Form1"  runat ="server" >
    
< asp:GridView  ID ="GridView1"  runat ="server"  CellSpacing ="1"  CellPadding ="3"
      Font-Size
="12px"  Width ="300px"  BackColor ="orange"  BorderWidth ="0"
      OnRowDataBound
="GridView1_RowDataBound"  OnRowCreated ="GridView1_RowCreated" >
    
</ asp:GridView >
  
</ form >
</ body >
</ html >

VB.NET

<% @ Page Language = " VB "   %>

<! 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)))
    Dim i As Integer 
=   0
    For i 
=   0  To  7
      Dim rd As System.Random 
=  New System.Random(Environment.TickCount  *  i)

      dr 
=  dt.NewRow
      dr(
0 =   " 学生 "   +  i.ToString
      dr(
1 =  System.Math.Round(rd.NextDouble  *   100 2 )
      dr(
2 =  System.Math.Round(rd.NextDouble  *   100 2 )
      dr(
3 =  System.Math.Round(rd.NextDouble  *   100 2 )
      dt.Rows.Add(dr)
    Next
    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)
      rowHeader.BackColor 
=  System.Drawing.Color.White
      rowHeader.Font.Bold 
=  True
      Dim cells As TableCellCollection 
=  e.Row.Cells
      Dim headerCell As TableCell 
=  New TableCell
      headerCell.Text 
=   ""
      rowHeader.Cells.Add(headerCell)
      headerCell 
=  New TableCell
      headerCell.Text 
=   " 学生成绩 "
      headerCell.ColumnSpan 
=  cells.Count  -   1
      headerCell.HorizontalAlign 
=  HorizontalAlign.Center
      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)
    e.Row.Attributes.Add(
" style " " background:#FFF " )
  End Sub

</ script >

< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head >
  
< title > 合并 GridView 的表头单元格 </ title >
</ head >
< body >
  
< form  id ="Form1"  runat ="server" >
    
< asp:GridView  ID ="GridView1"  runat ="server"  CellSpacing ="1"  CellPadding ="3"
      Font-Size
="12px"  Width ="300px"  BackColor ="orange"  BorderWidth ="0"
      OnRowDataBound
="GridView1_RowDataBound"  OnRowCreated ="GridView1_RowCreated" >
    
</ asp:GridView >
  
</ form >
</ body >
</ html >