ZIP下载包含html内容

Question

When I use the following code to download a ZIP file it appears to work. However, when I attempt to open the downloaded ZIP, I get an 'invalid compressed folder' message. When I open the ZIP in notepad I see it is filled with HTML.

string fp = Server.MapPath("directory\\file.zip");
FileInfo file = new FileInfo(fp);

if (file.Exists)
{
    Response.ClearContent();
    Response.AddHeader("content-disposition","attachment; filename=" + file.Name);
    Response.AddHeader("content-length", file.Length.ToString());
    Response.ContentType = "application/zip";
    Response.TransmitFile(file.FullName);
    Response.End();
}

An issue I can't seem to fix that is probably related is when I try to manually type in the address of the file ( http://website.com/downloads/file.zip ), I get a redirect ( http://website.com/login.aspx ) even when logged in as the admin. Any pointers in where to look would be greatly appreciated.

Answer 1

Instead of just using Response.ClearContent() also use Response.ClearHeaders() to remove all the current headers as well as the body of the response.

From MSDN, HttpResponse.ClearContent Method :

The ClearContent method does not clear header information.