web页面导出到Excel乱码解决

引言: 前几天 在做web项目的时候 需要导出页面上的数据 到Excel里面 但有的时候出现乱码(有de时候不出现 很奇怪) 原来的代码是这样的: HttpContext.Current.Response.Clear(); HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=FileName.xls"); HttpContext.Current.Response.Charset = "GB2312"; HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//.Unicode;//.UTF8;// HttpContext.Current.Response.ContentType = "xls"; //"application/vnd.xls"; System.IO.StringWriter stringWrite = new System.IO.StringWriter(); System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite); mygridview.RenderControl(htw); HttpContext.Current.Response.Write(sw.ToString()); HttpContext.Current.Response.End(); 如何解决? 修改为下面的代码 问题就解决了 HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.Write(""); HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename=MyExcelFile.xls"); HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312"); HttpContext.Current.Response.ContentType = "application/excel"; System.IO.StringWriter sw = new System.IO.StringWriter(); System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw); mygridview.RenderControl(htw); HttpContext.Current.Response.Write(sw.ToString()); HttpContext.Current.Response.End(); 仔细比较一下 就是 HttpContext.Current.Response.Write(""); 这句话起的作用 (这句话的作用是声明该网页使用gb2312进行编码) 原来是 HttpContext.Current.Response.Charset = "GB2312"; 我以为有这句话 就可以 看来不行 还是 使用 比较保险