File.Move() access denied ASP.NET

In my web application I have to move a file from the user computer to the server. I have to use an ascx component to do this.

Here is the code:

Private Function FileReplciate(ByRef FilePath As String)
     'FilePath  is the full file path e.g C:/Program Files/file.txt

      ' Create an id to hide the original file name (for security)

       Dim id = New Guid;

      Try

      'Here I move the file using File.Move()  here is the error
       File.Move(FilePath, Server.MapPath("temp\" & id.ToString))

      Catch ex As exception

      End Try

End Function

So when the source file is in a folder like "MyDocuments" or "MyPictures" or any sub folder inside the "User" folder i got the access denied error.

When the source file is in folders like "C:\" or "C:\ProgramFiles" I don't get this error.

Solution

Usually you're getting an error in ASP.NET because an account your application is running under don't have appropriate permissions.

But what you've described is file uploading. Server-side code has no access to client machine file system, this is impossible. Client have to upload it from a location it wish. Use <asp:FileUpload> control for this purpose.