error ( is not a valid virtual path )

Question

User1456523893 posted

i use this code to download MP4  file

Protected Sub Button1_Click1(sender As Object, e As EventArgs)

Response.ContentType = "application/mp4"
Response.AppendHeader("Content-Disposition", "attachment; filename=testing.mp4")
Response.TransmitFile("Money.Heist.S01E10.mp4")

Response.End()

End Sub

when i change  Response.TransmitFile("Money.Heist.S01E10.mp4") to https link erroe ( is not a valid virtual path )

Protected Sub Button1_Click1(sender As Object, e As EventArgs)

Response.ContentType = "application/mp4"
Response.AppendHeader("Content-Disposition", "attachment; filename=testing.mp4")
Response.TransmitFile("https://domainname.com/movies/Money.Heist.S01E10.mp4")

Response.End()

End Sub

Answer 1

User-821857111 posted

The TransmitFile method needs a virtual file path, not a URL. If the file is located on your server, you need to pass in the file path. If you want to return files that are not located on your server, you can't use TransmitFile with a URL. You can redirect the user to the other location or obtain the file and then serve it. 

Answer 2

User1456523893 posted

thanks Mr. Mike

i have a video link and when i click at the link i want to download it,not being playing

 

Answer 3

User-821857111 posted

What's wrong with your first code example? The one that has the file name rather than the URL?

Answer 4

User1456523893 posted

i want use link another server not virtual file path 

my  first code example Done but for  virtual file path  not for link 

Answer 5

User753101303 posted

Hi,

TransmitFile is for local files. It won't handle downloading from an http location. You'll have to download the file first possibly using HttpClient. For example http://www.tugberkugurlu.com/archive/efficiently-streaming-large-http-responses-with-httpclient

Answer 6

User-1716253493 posted

If you want read data from a web site then you can use system.net.webclient

Answer 7

User-893317190 posted

Hi bryar,

Money.Heist.S01E10.mp4 is not valid path for the method Response.TransmitFile. Valid path is like "D:\directory1\direcotry2\MoneyHeist.mp4". It is file system path.

So you should use method like Server.MapPath to get the valid file system path.

Just like 

 Response.TransmitFile(Server.MapPath("/images/example.mp4"))

The parameter of the MapPath method is the  path t of your mp4 file relative to the project root.

Or you could also write like below.

Response.TransmitFile("/images/example.mp4")

Best regards,

Ackerly Xu