asp.net裏導出excel表方法彙總

  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;
   //定義表對象與行對像,同時用DataSet對其值進行初始化
   DataTable dt=ds.Tables[0];
   DataRow[] myRow=dt.Select("");
   // typeid=="1"時導出爲EXCEL格式文件;typeid=="2"時導出爲XML格式文件
   if(typeid=="1")
   {
   //取得數據表各列標題,各標題之間以"t分割,最後一個列標題後加回車符
   for(i=0;i colHeaders+=dt.Columns[i].Caption.ToString()+""t";
   colHeaders +=dt.Columns[i].Caption.ToString() +""n";
   //向HTTP輸出流中寫入取得的數據信息
   resp.Write(colHeaders);
   //逐行處理數據
   foreach(DataRow row in myRow)
   {
   //在當前行中,逐列獲得數據,數據之間以"t分割,結束時加回車符"n
   for(i=0;i ls_item +=row[i].ToString() + ""t";
   ls_item += row[i].ToString() +""n";
   //當前行數據寫入HTTP輸出流,並且置空ls_item以便下行數據
   resp.Write(ls_item);
   ls_item="";
   }
   }
   else
   {
   if(typeid=="2")
   {
   //從DataSet中直接導出XML數據並且寫到HTTP輸出流中
   resp.Write(ds.GetXml());
   }
   }
   //寫緩沖區中的數據到HTTP頭文件中
   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、這個用dataview
  public void OutputExcel(DataView dv,string str)
  {
   //
   // TODO: 在此處添加構造函數邏輯
   //
   //dv爲要輸出到Excel的數據,str爲標題名稱
   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;
   //
   //取得標題
   //
   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;//設置標題格式爲居中對齊
   }
   //
   //取得表格中的數據
   //
   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;//設置日期型的字段格式爲居中對齊
   }
   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;//設置字符型的字段格式爲居中對齊
   }
   else
   {
   excel.Cells[rowIndex,colIndex] = row[col.ColumnName].ToString();
   }
   }
   }
   //
   //加載一個合計行
   //
   int rowSum = rowIndex + 1;
   int colSum = 2;
   excel.Cells[rowSum,2] = "合計";
   xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,2]).HorizontalAlignment = XlHAlign.xlHAlignCenter;
   //
   //設置選中的部分的顔色
   //
   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;//設置爲淺黃色,共計有56種
   //
   //取得整個報表的標題
   //
   excel.Cells[2,2] = str;
   //
   //設置整個報表的標題格式
   //
   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;
   //
   //設置報表表格爲最適應寬度
   //
   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();
   //
   //設置整個報表的標題爲跨列居中
   //
   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;
   //
   //繪制邊框
   //
   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;//設置左邊線加粗
   xSt.get_Range(excel.Cells[4,2],excel.Cells[4,colIndex]).Borders[XlBordersIndex.xlEdgeTop].Weight = XlBorderWeight.xlThick;//設置上邊線加粗
   xSt.get_Range(excel.Cells[4,colIndex],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeRight].Weight = XlBorderWeight.xlThick;//設置右邊線加粗
   xSt.get_Range(excel.Cells[rowSum,2],excel.Cells[rowSum,colIndex]).Borders[XlBordersIndex.xlEdgeBottom].Weight = XlBorderWeight.xlThick;//設置下邊線加粗
   //
   //顯示效果
   //
   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;
   // 添加頭信息,爲"文件下載/另存爲"對話框指定默認文件名
   Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(file.Name));
   // 添加頭信息,指定文件大小,讓浏覽器能夠顯示下載進度
   Response.AddHeader("Content-Length", file.Length.ToString());
  
   // 指定返回的是一個不能被客戶端讀取的流,必須被下載
   Response.ContentType = "application/ms-excel";
  
   // 把文件流發送到客戶端
   Response.WriteFile(file.FullName);
   // 停止頁面的執行
  
   Response.End();
  }