Question

我正在使用此代码下载文件，但它会抛出错误。请帮我处理。

线程正在中止。

protected void Download_Click(object sender, EventArgs e)
{
    try
    {
        string filePath = Convert.ToString(Attachment);
        string fullFilePath = ("../../SiteImages/" + "donald.jpg");
        Response.Clear();
        Response.ClearHeaders();
        Response.ClearContent();
        Response.AddHeader("Content-Disposition", "attachment; filename=\"" + Path.GetFileName(fullFilePath) + "\"");
        Response.ContentType = ContentType;
        Response.TransmitFile(fullFilePath);
        //MngLogs.InsertAuditsInfo("Tender downloaded via" + " " + MngLogs.PageName, MngLogs.UserMacAddress, MngLogs.UserIPAddress, UserID, "Download");
        //Response.End();
    }
    catch (Exception ex)
    {
        Utility.Msg_Error(Master, ex.Message);
    }
}

Answer 1

此下载方法是否可行？

try
{
    using (var client = new WebClient())
    {
        client.DownloadFile(urlToFileOnInternet, pathToFileOnComputer);
    }
}
catch (Exception ex)
{
    Utility.Msg_Error(Master, ex.Message);
}

希望这有帮助。

Answer 2

替换

Response.End();

用这个：

HttpContext.Current.Response.Flush();
HttpContext.Current.Response.SuppressContent = true;
HttpContext.Current.ApplicationInstance.CompleteRequest();

Response.End();总是抛出异常，因为它会中止当前线程。您可以在此处详细了解此行为：Is Response.End() considered harmful?，How to Avoid Response.End() "Thread was being aborted" Exception during the Excel file download。

为什么我的代码会抛出线程中止错误？

2 个答案: