//dtData是要導出為Excel的DataTable,FileName是要導出的Excel文件名(不加.xls)
??????? private void DataTable2Excel(System.Data.DataTable dtData, String FileName)
??????? {
??????????? System.Web.UI.WebControls.GridView dgExport = null;
??????????? //當前對話
??????????? System.Web.HttpContext curContext = System.Web.HttpContext.Current;
??????????? //IO用于導出并返回excel文件
??????????? System.IO.StringWriter strWriter = null;
??????????? System.Web.UI.HtmlTextWriter htmlWriter = null;

??????????? if (dtData != null)
??????????? {
??????????????? //設置編碼和附件格式
??????????????? //System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8)作用是方式中文文件名亂碼
??????????????? curContext.Response.AddHeader("content-disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");
??????????????? curContext.Response.ContentType = "application nd.ms-excel";
??????????????? curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
??????????????? curContext.Response.Charset = "GB2312";

??????????????? //導出Excel文件
??????????????? strWriter = new System.IO.StringWriter();
??????????????? htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);

??????????????? //為了解決dgData中可能進行了分頁的情況,需要重新定義一個無分頁的GridView
??????????????? dgExport = new System.Web.UI.WebControls.GridView();
??????????????? dgExport.DataSource = dtData.DefaultView;
??????????????? dgExport.AllowPaging = false;
??????????????? dgExport.DataBind();

??????????????? //下載到客戶端
??????????????? dgExport.RenderControl(htmlWriter);
??????????????? curContext.Response.Write(strWriter.ToString());
??????????????? curContext.Response.End();
??????????? }
??????? }

轉載于:https://www.cnblogs.com/zhuawang/archive/2007/05/16/748994.html

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