原文件作者是：csdn.net的清清月儿 她的主页  http://blog.csdn.net/21aspnet/

15.GridView合并表头多重表头无错完美版（以合并3列3行举例）

后台代码

代码

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; using  System.Data.SqlClient; using  System.Drawing; public   partial   class  _Default : System.Web.UI.Page {    SqlConnection sqlcon;    SqlCommand sqlcom;     string  strCon  =   " Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa " ;     protected   void  Page_Load( object  sender, EventArgs e)    {         if  ( ! IsPostBack)        {            bind();                    }    }     protected   void  GridView1_RowEditing( object  sender, GridViewEditEventArgs e)    {        GridView1.EditIndex  =  e.NewEditIndex;        bind();    }     protected   void  GridView1_RowUpdating( object  sender, GridViewUpdateEventArgs e)    {        sqlcon  =   new  SqlConnection(strCon);         string  sqlstr  =   " update 飞狐工作室 set 姓名=' "              +  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[ 1 ].Controls[ 0 ])).Text.ToString().Trim()  +   " ',家庭住址=' "              +  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[ 3 ].Controls[ 0 ])).Text.ToString().Trim()  +   " ' where 身份证号码=' "               +  GridView1.DataKeys[e.RowIndex].Value.ToString()  +   " ' " ;        sqlcom = new  SqlCommand(sqlstr,sqlcon);        sqlcon.Open();        sqlcom.ExecuteNonQuery();        sqlcon.Close();        GridView1.EditIndex  =   - 1 ;        bind();    }     protected   void  GridView1_RowCancelingEdit( object  sender, GridViewCancelEditEventArgs e)    {        GridView1.EditIndex  =   - 1 ;        bind();    }     public   void  bind()    {         string  sqlstr  =   " select top 10 * from 飞狐工作室 " ;        sqlcon  =   new  SqlConnection(strCon);        SqlDataAdapter myda  =   new  SqlDataAdapter(sqlstr, sqlcon);        DataSet myds  =   new  DataSet();        sqlcon.Open();        myda.Fill(myds,  " 飞狐工作室 " );        GridView1.DataSource  =  myds;        GridView1.DataKeyNames  =   new   string [] {  " 身份证号码 "  };        GridView1.DataBind();        sqlcon.Close();    } // 这里就是解决方案      protected   void  GridView1_RowCreated( object  sender, GridViewRowEventArgs e)    {         switch  (e.Row.RowType)        {             case  DataControlRowType.Header:                 // 第一行表头                 TableCellCollection tcHeader  =  e.Row.Cells;                tcHeader.Clear();                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 0 ].Attributes.Add( " rowspan " ,  " 3 " );  // 跨Row                 tcHeader[ 0 ].Attributes.Add( " bgcolor " ,  " white " );                tcHeader[ 0 ].Text  =   "" ;                tcHeader.Add( new  TableHeaderCell());                 // tcHeader[1].Attributes.Add("bgcolor", "Red");                 tcHeader[ 1 ].Attributes.Add( " colspan " ,  " 6 " );  // 跨Column                 tcHeader[ 1 ].Text  =   " 全部信息</th></tr><tr> " ;                 // 第二行表头                 tcHeader.Add( new  TableHeaderCell());                tcHeader[ 2 ].Attributes.Add( " bgcolor " ,  " DarkSeaGreen " );                tcHeader[ 2 ].Text  =   " 身份证号码 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 3 ].Attributes.Add( " bgcolor " ,  " LightSteelBlue " );                tcHeader[ 3 ].Attributes.Add( " colspan " ,  " 2 " );                tcHeader[ 3 ].Text  =   " 基本信息 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 4 ].Attributes.Add( " bgcolor " ,  " DarkSeaGreen " );                tcHeader[ 4 ].Text  =   " 福利 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 5 ].Attributes.Add( " bgcolor " ,  " LightSteelBlue " );                tcHeader[ 5 ].Attributes.Add( " colspan " ,  " 2 " );                tcHeader[ 5 ].Text  =   " 联系方式</th></tr><tr> " ;                 // 第三行表头                 tcHeader.Add( new  TableHeaderCell());                tcHeader[ 6 ].Attributes.Add( " bgcolor " ,  " Khaki " );                tcHeader[ 6 ].Text  =   " 身份证号码 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 7 ].Attributes.Add( " bgcolor " ,  " Khaki " );                tcHeader[ 7 ].Text  =   " 姓名 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 8 ].Attributes.Add( " bgcolor " ,  " Khaki " );                tcHeader[ 8 ].Text  =   " 出生日期 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 9 ].Attributes.Add( " bgcolor " ,  " Khaki " );                tcHeader[ 9 ].Text  =   " 薪水 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 10 ].Attributes.Add( " bgcolor " ,  " Khaki " );                tcHeader[ 10 ].Text  =   " 家庭住址 " ;                tcHeader.Add( new  TableHeaderCell());                tcHeader[ 11 ].Attributes.Add( " bgcolor " ,  " Khaki " );                tcHeader[ 11 ].Text  =   " 邮政编码 " ;                 break ;        }    }}

前台代码

 代码

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" > < html  xmlns ="http://www.w3.org/1999/xhtml"   > < head  runat ="server" >      < title > GridView合并多重表头表头 清清月儿http://blog.csdn.net/21aspnet  </ title > </ head > < body  >      < form  id ="form1"  runat ="server" >      < div   >                     < asp:GridView  ID ="GridView1"  runat ="server"     AutoGenerateColumns ="False"  CellPadding ="3"   OnRowEditing ="GridView1_RowEditing"                         OnRowUpdating ="GridView1_RowUpdating"  OnRowCancelingEdit ="GridView1_RowCancelingEdit"  BackColor ="White"  BorderColor ="#CCCCCC"  BorderStyle ="None"  BorderWidth ="1px"  Font-Size ="12px"  OnRowCreated ="GridView1_RowCreated"    >                          < FooterStyle  BackColor ="White"  ForeColor ="#000066"   />                          < Columns >                              < asp:CommandField  HeaderText ="编辑"  ShowEditButton ="True"   />                              < asp:BoundField  DataField ="身份证号码"  HeaderText ="编号"  ReadOnly ="True"   />                              < asp:BoundField  DataField ="姓名"  HeaderText ="姓名"    />                              < asp:BoundField  DataField ="出生日期"  HeaderText ="邮政编码"    />                               < asp:BoundField  DataField ="起薪"  HeaderText ="起薪"    />                              < asp:BoundField  DataField ="家庭住址"  HeaderText ="家庭住址"    />                              < asp:BoundField  DataField ="邮政编码"  HeaderText ="邮政编码"   />                                                     </ Columns >                          < RowStyle  ForeColor ="#000066"   />                          < SelectedRowStyle  BackColor ="#669999"  Font-Bold ="True"  ForeColor ="White"   />                          < PagerStyle  BackColor ="White"  ForeColor ="#000066"  HorizontalAlign ="Left"   CssClass ="ms-formlabel DataGridFixedHeader" />                          < HeaderStyle  BackColor ="#006699"  Font-Bold ="True"  ForeColor ="White"   />                      </ asp:GridView >          </ div >      </ form > </ body > </ html >

 

16.GridView突出显示某一单元格（例如金额低于多少，分数不及格等）

解决方案：主要是绑定后过滤

 代码

GridView1.DataBind();         for  ( int  i  =   0 ; i  <=  GridView1.Rows.Count  -   1 ; i ++ )        {            DataRowView mydrv  =  myds.Tables[ " 飞狐工作室 " ].DefaultView[i];             string  score  =  Convert.ToString(mydrv[ " 起薪 " ]);             if  (Convert.ToDouble(score)  <   34297.00 ) // 大家这里根据具体情况设置可能ToInt32等等             {                GridView1.Rows[i].Cells[ 4 ].BackColor  =  System.Drawing.Color.Red;            }        }        sqlcon.Close();

 

 所有后台代码

 代码

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; using  System.Data.SqlClient; using  System.Drawing; public   partial   class  Default7 : System.Web.UI.Page{    SqlConnection sqlcon;    SqlCommand sqlcom;     string  strCon  =   " Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa " ;     protected   void  Page_Load( object  sender, EventArgs e)    {         if  ( ! IsPostBack)        {            bind();        }    }     protected   void  GridView1_RowEditing( object  sender, GridViewEditEventArgs e)    {        GridView1.EditIndex  =  e.NewEditIndex;        bind();    }     protected   void  GridView1_RowUpdating( object  sender, GridViewUpdateEventArgs e)    {        sqlcon  =   new  SqlConnection(strCon);         string  sqlstr  =   " update 飞狐工作室 set 姓名=' "              +  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[ 1 ].Controls[ 0 ])).Text.ToString().Trim()  +   " ',家庭住址=' "              +  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[ 3 ].Controls[ 0 ])).Text.ToString().Trim()  +   " ' where 身份证号码=' "              +  GridView1.DataKeys[e.RowIndex].Value.ToString()  +   " ' " ;        sqlcom  =   new  SqlCommand(sqlstr, sqlcon);        sqlcon.Open();        sqlcom.ExecuteNonQuery();        sqlcon.Close();        GridView1.EditIndex  =   - 1 ;        bind();    }     protected   void  GridView1_RowCancelingEdit( object  sender, GridViewCancelEditEventArgs e)    {        GridView1.EditIndex  =   - 1 ;        bind();    }     public   void  bind()    {         string  sqlstr  =   " select top 10 * from 飞狐工作室 " ;        sqlcon  =   new  SqlConnection(strCon);        SqlDataAdapter myda  =   new  SqlDataAdapter(sqlstr, sqlcon);        DataSet myds  =   new  DataSet();        sqlcon.Open();        myda.Fill(myds,  " 飞狐工作室 " );        GridView1.DataSource  =  myds;        GridView1.DataKeyNames  =   new   string [] {  " 身份证号码 "  };        GridView1.DataBind();         for  ( int  i  =   0 ; i  <=  GridView1.Rows.Count  -   1 ; i ++ )        {            DataRowView mydrv  =  myds.Tables[ " 飞狐工作室 " ].DefaultView[i];             string  score  =  Convert.ToString(mydrv[ " 起薪 " ]);             if  (Convert.ToDouble(score)  <   34297.00 ) // 大家这里根据具体情况设置可能ToInt32等等             {                GridView1.Rows[i].Cells[ 4 ].BackColor  =  System.Drawing.Color.Red;            }        }        sqlcon.Close();    }}

 

 前台代码：

 代码

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" > < html  xmlns ="http://www.w3.org/1999/xhtml"   > < head  id ="Head1"  runat ="server" >      < title > GridView突出显示某一单元格 清清月儿http://blog.csdn.net/21aspnet  </ title > </ head > < body  >      < form  id ="form1"  runat ="server" >      < div   >                     < asp:GridView  ID ="GridView1"  runat ="server"     AutoGenerateColumns ="False"  CellPadding ="3"   OnRowEditing ="GridView1_RowEditing"                         OnRowUpdating ="GridView1_RowUpdating"  OnRowCancelingEdit ="GridView1_RowCancelingEdit"  BackColor ="White"  BorderColor ="#CCCCCC"  BorderStyle ="None"  BorderWidth ="1px"  Font-Size ="12px"    >                          < FooterStyle  BackColor ="White"  ForeColor ="#000066"   />                          < Columns >                              < asp:CommandField  HeaderText ="编辑"  ShowEditButton ="True"   />                              < asp:BoundField  DataField ="身份证号码"  HeaderText ="编号"  ReadOnly ="True"   />                              < asp:BoundField  DataField ="姓名"  HeaderText ="姓名"    />                              < asp:BoundField  DataField ="出生日期"  HeaderText ="邮政编码"    />                               < asp:BoundField  DataField ="起薪"  HeaderText ="起薪"   DataFormatString ="{0:C}"  HtmlEncode ="false" />                              < asp:BoundField  DataField ="家庭住址"  HeaderText ="家庭住址"    />                              < asp:BoundField  DataField ="邮政编码"  HeaderText ="邮政编码"   />                                                     </ Columns >                          < RowStyle  ForeColor ="#000066"   />                          < SelectedRowStyle  BackColor ="#669999"  Font-Bold ="True"  ForeColor ="White"   />                          < PagerStyle  BackColor ="White"  ForeColor ="#000066"  HorizontalAlign ="Left"   CssClass ="ms-formlabel DataGridFixedHeader" />                          < HeaderStyle  BackColor ="#006699"  Font-Bold ="True"  ForeColor ="White"   />                      </ asp:GridView >          </ div >      </ form > </ body > </ html >

 

 17.GridView加入自动求和求平均值小计

 

代码 private   double  sum  =   0 ; // 取指定列的数据和，你要根据具体情况对待可能你要处理的是int protected   void  GridView1_RowDataBound( object  sender, GridViewRowEventArgs e)    {                 if  (e.Row.RowIndex  >=   0 )        {            sum  +=  Convert.ToDouble(e.Row.Cells[ 6 ].Text);        }         else   if  (e.Row.RowType  ==  DataControlRowType.Footer)        {            e.Row.Cells[ 5 ].Text  =   " 总薪水为： " ;            e.Row.Cells[ 6 ].Text  =  sum.ToString();            e.Row.Cells[ 3 ].Text  =   " 平均薪水为： " ;            e.Row.Cells[ 4 ].Text  =  (( int )(sum  /  GridView1.Rows.Count)).ToString();                    }    }

后台所有代码：

代码 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; using  System.Data.SqlClient; using  System.Drawing; public   partial   class  Default7 : System.Web.UI.Page{    SqlConnection sqlcon;    SqlCommand sqlcom;     string  strCon  =   " Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa " ;     protected   void  Page_Load( object  sender, EventArgs e)    {         if  ( ! IsPostBack)        {            bind();        }    }     protected   void  GridView1_RowEditing( object  sender, GridViewEditEventArgs e)    {        GridView1.EditIndex  =  e.NewEditIndex;        bind();    }     protected   void  GridView1_RowUpdating( object  sender, GridViewUpdateEventArgs e)    {        sqlcon  =   new  SqlConnection(strCon);         string  sqlstr  =   " update 飞狐工作室 set 姓名=' "              +  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[ 1 ].Controls[ 0 ])).Text.ToString().Trim()  +   " ',家庭住址=' "              +  ((TextBox)(GridView1.Rows[e.RowIndex].Cells[ 3 ].Controls[ 0 ])).Text.ToString().Trim()  +   " ' where 身份证号码=' "              +  GridView1.DataKeys[e.RowIndex].Value.ToString()  +   " ' " ;        sqlcom  =   new  SqlCommand(sqlstr, sqlcon);        sqlcon.Open();        sqlcom.ExecuteNonQuery();        sqlcon.Close();        GridView1.EditIndex  =   - 1 ;        bind();    }     protected   void  GridView1_RowCancelingEdit( object  sender, GridViewCancelEditEventArgs e)    {        GridView1.EditIndex  =   - 1 ;        bind();    }     public   void  bind()    {         string  sqlstr  =   " select top 5 * from 飞狐工作室 " ;        sqlcon  =   new  SqlConnection(strCon);        SqlDataAdapter myda  =   new  SqlDataAdapter(sqlstr, sqlcon);        DataSet myds  =   new  DataSet();        sqlcon.Open();        myda.Fill(myds,  " 飞狐工作室 " );        GridView1.DataSource  =  myds;        GridView1.DataKeyNames  =   new   string [] {  " 身份证号码 "  };        GridView1.DataBind();        sqlcon.Close();    }     private   double  sum  =   0 ; // 取指定列的数据和      protected   void  GridView1_RowDataBound( object  sender, GridViewRowEventArgs e)    {                 if  (e.Row.RowIndex  >=   0 )        {            sum  +=  Convert.ToDouble(e.Row.Cells[ 6 ].Text);        }         else   if  (e.Row.RowType  ==  DataControlRowType.Footer)        {            e.Row.Cells[ 5 ].Text  =   " 总薪水为： " ;            e.Row.Cells[ 6 ].Text  =  sum.ToString();            e.Row.Cells[ 3 ].Text  =   " 平均薪水为： " ;            e.Row.Cells[ 4 ].Text  =  (( int )(sum  /  GridView1.Rows.Count)).ToString();                    }    }}

前台：唯一的花头就是设置ShowFooter="True" ，否则默认表头为隐藏的！

代码 < asp:GridView  ID ="GridView1"  runat ="server"     AutoGenerateColumns ="False"  CellPadding ="3"   OnRowEditing ="GridView1_RowEditing"                         OnRowUpdating ="GridView1_RowUpdating"  OnRowCancelingEdit ="GridView1_RowCancelingEdit"  BackColor ="White"  BorderColor ="#CCCCCC"  BorderStyle ="None"  BorderWidth ="1px"  Font-Size ="12px"  OnRowDataBound ="GridView1_RowDataBound"  ShowFooter ="True"    >                          < FooterStyle  BackColor ="White"  ForeColor ="#000066"   />                          < Columns >                              < asp:CommandField  HeaderText ="编辑"  ShowEditButton ="True"   />                              < asp:BoundField  DataField ="身份证号码"  HeaderText ="编号"  ReadOnly ="True"   />                              < asp:BoundField  DataField ="姓名"  HeaderText ="姓名"    />                              < asp:BoundField  DataField ="出生日期"  HeaderText ="邮政编码"    />                              < asp:BoundField  DataField ="家庭住址"  HeaderText ="家庭住址"    />                              < asp:BoundField  DataField ="邮政编码"  HeaderText ="邮政编码"   />                              < asp:BoundField  DataField ="起薪"  HeaderText ="起薪"    />                                                     </ Columns >                          < RowStyle  ForeColor ="#000066"   />                          < SelectedRowStyle  BackColor ="#669999"  Font-Bold ="True"  ForeColor ="White"   />                          < PagerStyle  BackColor ="White"  ForeColor ="#000066"  HorizontalAlign ="Left"   CssClass ="ms-formlabel DataGridFixedHeader" />                          < HeaderStyle  BackColor ="#006699"  Font-Bold ="True"  ForeColor ="White"   />                      </ asp:GridView >

 18.GridView数据导入Excel/Excel数据读入GridView

页面增加一个按钮，单击事件添加如下方法： 

代码 protected   void  Button1_Click( object  sender, EventArgs e)    {        Export( " application/ms-excel " ,  " 学生成绩报表.xls " );    }     private   void  Export( string  FileType,  string  FileName)    {        Response.Charset  =   " GB2312 " ;        Response.ContentEncoding  =  System.Text.Encoding.UTF7;        Response.AppendHeader( " Content-Disposition " ,  " attachment;filename= "   +  HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());        Response.ContentType  =  FileType;         this .EnableViewState  =   false ;        StringWriter tw  =   new  StringWriter();        HtmlTextWriter hw  =   new  HtmlTextWriter(tw);        GridView1.RenderControl(hw);        Response.Write(tw.ToString());        Response.End();    }

//如果没有下面方法会报错类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内    public override void VerifyRenderingInServerForm(Control control)    {    }还有由于是文件操作所以要引入名称空间IO和Text

后台代码：

代码 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; using  System.Data.SqlClient; using  System.Drawing; using  System.IO; using  System.Text; public   partial   class  Default7 : System.Web.UI.Page{    SqlConnection sqlcon;    SqlCommand sqlcom;     string  strCon  =   " Data Source=(local);Database=北风贸易;Uid=sa;Pwd=sa " ;     protected   void  Page_Load( object  sender, EventArgs e)    {         if  ( ! IsPostBack)        {            bind();        }    }         public   void  bind()    {         string  sqlstr  =   " select top 5 * from 飞狐工作室 " ;        sqlcon  =   new  SqlConnection(strCon);        SqlDataAdapter myda  =   new  SqlDataAdapter(sqlstr, sqlcon);        DataSet myds  =   new  DataSet();        sqlcon.Open();        myda.Fill(myds,  " 飞狐工作室 " );        GridView1.DataSource  =  myds;        GridView1.DataKeyNames  =   new   string [] {  " 身份证号码 "  };        GridView1.DataBind();        sqlcon.Close();    }     protected   void  Button1_Click( object  sender, EventArgs e)    {        Export( " application/ms-excel " ,  " 学生成绩报表.xls " );    }     private   void  Export( string  FileType,  string  FileName)    {        Response.Charset  =   " GB2312 " ;        Response.ContentEncoding  =  System.Text.Encoding.UTF7;        Response.AppendHeader( " Content-Disposition " ,  " attachment;filename= "   +  HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());        Response.ContentType  =  FileType;         this .EnableViewState  =   false ;        StringWriter tw  =   new  StringWriter();        HtmlTextWriter hw  =   new  HtmlTextWriter(tw);        GridView1.RenderControl(hw);        Response.Write(tw.ToString());        Response.End();    }     public   override   void  VerifyRenderingInServerForm(Control control)    {    }    }

 前台

 代码

< asp:GridView  ID ="GridView1"  runat ="server"     AutoGenerateColumns ="False"  CellPadding ="3"                            BackColor ="White"  BorderColor ="#CCCCCC"  BorderStyle ="None"  BorderWidth ="1px"  Font-Size ="12px"     >                          < FooterStyle  BackColor ="White"  ForeColor ="#000066"   />                          < Columns >                              < asp:BoundField  DataField ="身份证号码"  HeaderText ="编号"  ReadOnly ="True"   />                              < asp:BoundField  DataField ="姓名"  HeaderText ="姓名"    />                              < asp:BoundField  DataField ="出生日期"  HeaderText ="邮政编码"    />                              < asp:BoundField  DataField ="家庭住址"  HeaderText ="家庭住址"    />                              < asp:BoundField  DataField ="邮政编码"  HeaderText ="邮政编码"   />                              < asp:BoundField  DataField ="起薪"  HeaderText ="起薪"    />                                                     </ Columns >                          < RowStyle  ForeColor ="#000066"   />                          < SelectedRowStyle  BackColor ="#669999"  Font-Bold ="True"  ForeColor ="White"   />                          < PagerStyle  BackColor ="White"  ForeColor ="#000066"  HorizontalAlign ="Left"   CssClass ="ms-formlabel DataGridFixedHeader" />                          < HeaderStyle  BackColor ="#006699"  Font-Bold ="True"  ForeColor ="White"   />                      </ asp:GridView >          < asp:Button  ID ="Button1"  runat ="server"  OnClick ="Button1_Click"  Text ="导出"   /> 读取Excel数据的代码：这个很简单的private DataSet CreateDataSource()    {        string strCon;        strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;";        OleDbConnection olecon = new OleDbConnection(strCon);        OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon);        DataSet myds = new DataSet();        myda.Fill(myds);        return myds;    }    protected void Button1_Click(object sender, EventArgs e)    {        GridView1.DataSource = CreateDataSource();        GridView1.DataBind();    }