asp.net在ie下下载保存文件出错

添加如下代码可以解决此问题： 

HttpContext.Current.Response.ClearHeaders(); 

HttpContext.Current.Response.AppendHeader( "Expires ",   System.DateTime.Now.AddMinutes(30).ToString()); 

HttpContext.Current.Response.AppendHeader( "Pragma ",   "public "); 

HttpContext.Current.Response.AppendHeader( "Cache-Control ",   "must-revalidate,   post-check=0,   pre-check=0 "); 

HttpContext.Current.Response.AppendHeader( "Cache-Control ", "public ");