C#中如何防止Excel做科学计算法转换

　　　　 string style = @"<style>.text{mso-number-format:\@;}</style>";//注意这是样式，不需要修改可直接使用

Response.Clear();
            Response.Buffer = true;

Response.Charset = "utf-8";
            Response.AppendHeader("Content-Disposition", "attachment;filename=plandetail.xls");
            Response.ContentEncoding = System.Text.Encoding.UTF8;
            Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
            System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
            this.GridView2.RenderControl(oHtmlTextWriter);

Response.Output.Write(style);//这里很重要不写到文件里是无法应用样式的。

Response.Output.Write(oStringWriter.ToString());
            Response.Flush();
            Response.End();