/// 下载文件操作类
public static class DownLoadFiles
{
/// 下载文件
/// 要下载的文件名称
public static void DownLoadFile(string strDownLoadFileName)
{
if (String.IsNullOrEmpty(strDownLoadFileName))return;
try
{
FileInfo info = new FileInfo(strDownLoadFileName);
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(info.Name));
HttpContext.Current.Response.AddHeader("Content-Length", info.Length.ToString());
HttpContext.Current.Response.ContentType = "application/octet-stream";//ms-excel
HttpContext.Current.Response.WriteFile(info.FullName);
//HttpContext.Current.Response.End();
HttpContext.Current.ApplicationInstance.CompleteRequest();
}
catch (Exception ex)
{
throw ex;
}
}
}
// 最初是 HttpContext.Current.Response.End() 总是报错，异常“由于代码已经过优化或者本机框架位于调用堆栈之上,无法计算表达式的值”后来将上面的"HttpContext.Current.Response.End();"改成"HttpContext.Current.ApplicationInstance.CompleteRequest();",这个问题就自然的解决了。