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asp.net里导出excel表方法汇总

  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、使用微软的C++写的ACTIVEX控件:http://download.microsoft.com/download/OfficeXPDev/sample/1.0/WIN98MeXP/EN-US/Dsoframerctl.exe

  3、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);

  4、这个用dataview ,代码好长

  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

  }

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