ASP.NET页面数据导出 excel表方法

//1、由dataset生成 
public void CreateExcel(DataSet ds,string typeid,string FileName)  
  { 
   HttpResponse resp; 
   resp = Page.Response; 
   resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312"); 
   resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);    
   string colHeaders= "", ls_item=""; 
   int i=0; 
 
   //定义表对象与行对像，同时用DataSet对其值进行初始化 
   DataTable dt=ds.Tables[0]; 
   DataRow[] myRow=dt.Select("");  
   // typeid=="1"时导出为EXCEL格式文件；typeid=="2"时导出为XML格式文件 
   if(typeid=="1") 
   { 
    //取得数据表各列标题，各标题之间以\t分割，最后一个列标题后加回车符 
    for(i=0;i     colHeaders+=dt.Columns[i].Caption.ToString()+"\t"; 
    colHeaders +=dt.Columns[i].Caption.ToString() +"\n";    
    //向HTTP输出流中写入取得的数据信息 
    resp.Write(colHeaders);  
    //逐行处理数据   
    foreach(DataRow row in myRow) 
    { 
     //在当前行中，逐列获得数据，数据之间以\t分割，结束时加回车符\n 
     for(i=0;i      ls_item +=row[i].ToString() + "\t";      
     ls_item += row[i].ToString() +"\n"; 
     //当前行数据写入HTTP输出流，并且置空ls_item以便下行数据     
     resp.Write(ls_item); 
     ls_item=""; 
    } 
   } 
   else 
   { 
    if(typeid=="2") 
    {  
     //从DataSet中直接导出XML数据并且写到HTTP输出流中 
     resp.Write(ds.GetXml()); 
    }     
   } 
   //写缓冲区中的数据到HTTP头文件中 
   resp.End(); 
 
 
  } 
//2、由datagrid生成 
public void ToExcel(System.Web.UI.Control ctl)   
  { 
   HttpContext.Current.Response.AppendHeader("Content-Disposition","attachment;filename=Excel.xls"); 
   HttpContext.Current.Response.Charset ="UTF-8";     
   HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default; 
   HttpContext.Current.Response.ContentType ="application/ms-excel";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword 
   ctl.Page.EnableViewState =false;    
   System.IO.StringWriter  tw = new System.IO.StringWriter() ; 
   System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter (tw); 
   ctl.RenderControl(hw); 
   HttpContext.Current.Response.Write(tw.ToString()); 
   HttpContext.Current.Response.End(); 
  } 
 
用法：ToExcel(datagrid1); 
 
//3、这个用dataview 
public void OutputExcel(DataView dv,string str) 
{ 
   // 
   // TODO: 在此处添加构造函数逻辑 
   // 
                           //dv为要输出到Excel的数据，str为标题名称 
   GC.Collect(); 
   Application excel;// = new Application(); 
   int rowIndex=4; 
   int colIndex=1; 
 
   _Workbook xBk; 
   _Worksheet xSt; 
 
   excel= new ApplicationClass(); 
   
   xBk = excel.Workbooks.Add(true); 
    
   xSt = (_Worksheet)xBk.ActiveSheet; 
 
   // 
   //取得标题 
   // 
   foreach(DataColumn col in dv.Table.Columns) 
   { 
    colIndex++; 
    excel.Cells[4,colIndex] = col.ColumnName; 
    xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[4,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置标题格式为居中对齐 
   } 
 
   // 
   //取得表格中的数据 
   // 
   foreach(DataRowView row in dv) 
   { 
    rowIndex ++; 
    colIndex = 1; 
    foreach(DataColumn col in dv.Table.Columns) 
    { 
     colIndex ++; 
     if(col.DataType == System.Type.GetType("System.DateTime")) 
     { 
      excel.Cells[rowIndex,colIndex] = (Convert.ToDateTime(row[col.ColumnName].ToString())).ToString("yyyy-MM-dd"); 
      xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置日期型的字段格式为居中对齐 
     } 
     else 
      if(col.DataType == System.Type.GetType("System.String")) 
     { 
      excel.Cells[rowIndex,colIndex] = "'"+row[col.ColumnName].ToString(); 
      xSt.get_Range(excel.Cells[rowIndex,colIndex],excel.Cells[rowIndex,colIndex]).HorizontalAlignment = XlVAlign.xlVAlignCenter;//设置字符型的字段格式为居中对齐 
     } 
     else 
     { 
      excel.Cells[rowIndex,colIndex] = row[col.ColumnName].ToString(); 
     } 
    } 
   } 
   // 
   //加载一个合计行 
   // 
   int rowSum = rowIndex + 1; 
   int colSum = 2; 
   excel.Cells[rowSum,2] = "合计"; 
   xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,2]).HorizontalAlignment = XlHAlign.xlHAlignCenter; 
   // 
   //设置选中的部分的颜色 
   // 
   xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Select(); 
   xSt.get_Range(excel.Cells[rowSum,colSum],excel.Cells[rowSum,colIndex]).Interior.ColorIndex = 19;//设置为浅黄色，共计有56种 
   // 
   //取得整个报表的标题 
   // 
   excel.Cells[2,2] = str; 
   // 
   //设置整个报表的标题格式 
   // 
   xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Bold = true; 
   xSt.get_Range(excel.Cells[2,2],excel.Cells[2,2]).Font.Size = 22; 
   // 
   //设置报表表格为最适应宽度 
   // 
   xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Select(); 
   xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Columns.AutoFit(); 
   // 
   //设置整个报表的标题为跨列居中 
   // 
   xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).Select(); 
   xSt.get_Range(excel.Cells[2,2],excel.Cells[2,colIndex]).HorizontalAlignment = XlHAlign.xlHAlignCenterAcrossSelection; 
   // 
   //绘制边框 
   // 
   xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,colIndex]).Borders.LineStyle = 1; 
   xSt.get_Range(excel.Cells[4,2],excel.Cells[rowSum,2]).Borders[XlBordersIndex.xlEdgeLeft].Weight = XlBorderWeight.xlThick;//设置左边线加粗 
   xSt.get_Range(excel.Cells[4,2],excel.Cells[4,colIndex]).Borders[XlBordersIndex.xlEdgeTop].Weight = XlBorderWeight.xlThick;//设置上边线加粗 
   xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeRight].Weight = XlBorderWeight.xlThick;//设置右边线加粗 
   xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeBottom].Weight = XlBorderWeight.xlThick;//设置下边线加粗 
   // 
   //显示效果 
   // 
   excel.Visible=true; 
 
   //xSt.Export(Server.MapPath(".")+"\\"+this.xlfile.Text+".xls",SheetExportActionEnum.ssExportActionNone,Microsoft.Office.Interop.OWC.SheetExportFormat.ssExportHTML); 
   xBk.SaveCopyAs(Server.MapPath(".")+"\\"+this.xlfile.Text+".xls"); 
 
   ds = null; 
            xBk.Close(false, null,null); 
    
            excel.Quit(); 
            System.Runtime.InteropServices.Marshal.ReleaseComObject(xBk); 
            System.Runtime.InteropServices.Marshal.ReleaseComObject(excel); 
    System.Runtime.InteropServices.Marshal.ReleaseComObject(xSt); 
            xBk = null; 
            excel = null; 
   xSt = null; 
            GC.Collect(); 
   string path = Server.MapPath(this.xlfile.Text+".xls"); 
 
   System.IO.FileInfo file = new System.IO.FileInfo(path); 
   Response.Clear(); 
   Response.Charset="GB2312"; 
   Response.ContentEncoding=System.Text.Encoding.UTF8; 
   // 添加头信息，为"文件下载/另存为"对话框指定默认文件名 
   Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name)); 
   // 添加头信息，指定文件大小，让浏览器能够显示下载进度 
   Response.AddHeader("Content-Length", file.Length.ToString()); 
    
   // 指定返回的是一个不能被客户端读取的流，必须被下载 
   Response.ContentType = "application/ms-excel"; 
    
   // 把文件流发送到客户端 
   Response.WriteFile(file.FullName); 
   // 停止页面的执行 
   
   Response.End(); 
}