asp.net写excel文件

[xjlovezxx]

初学asp.net 请高手们指教一下啊 如何写excle表？
（在页面做几个输入框 然后手动输入一些数据 将这些数据保存到excel中）

[pwxcomer]

//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();   
}   

[狙击手]

添加com组件，然后调用excel操作对象，一看就明白，里面什么都有。

楼上写得很齐全。各种情况下生成excel表。

[子夜__]

/// <summary>
        /// 将Web控件导出
        /// </summary>
        /// <param name="source">控件实例</param>
        /// <param name="type">类型:Excel或Word</param>
        public void ExpertControl(System.Web.UI.Control source, DocumentType type)
        {
            //设置Http的头信息,编码格式
            if (type == DocumentType.Excel)
            {
                //Excel
                Response.AppendHeader("Content-Disposition","attachment;filename=result.xls");
                Response.ContentType = "application/ms-excel";
            }
            else if (type == DocumentType.Word)
            {
                //Word
                Response.AppendHeader("Content-Disposition","attachment;filename=result.doc");
                Response.ContentType = "application/ms-word";
            }
            Response.Charset = "UTF-8";  
            Response.ContentEncoding = System.Text.Encoding.UTF8; 

            //关闭控件的视图状态
            source.Page.EnableViewState =false;  

            //初始化HtmlWriter
            System.IO.StringWriter writer = new System.IO.StringWriter() ;
            System.Web.UI.HtmlTextWriter htmlWriter = new System.Web.UI.HtmlTextWriter(writer);
            source.RenderControl(htmlWriter); 

            //输出
            Response.Write(writer.ToString());
            Response.End();
        }

        //文档类型
        public enum DocumentType
        {
            Word,
            Excel
        }