C# .NET FTP missing dependency? FTP

Question

I have some c# code that downloads files from an FTP server. It works fine when I run it and it works fine when I install it on my development machine then run it. However, when I try to install it on another machine (a Windows XP SP3 VM) it doesn't work. No exceptions are thrown or anything.

Here is the short version of my code:

reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + dir + "/"));
reqFTP.BeginGetResponse(new AsyncCallback(DLFilesInDirCallback), state);

.......

public void DLFilesInDirCallback(IAsyncResult ar)
{
   MessageBox.Show("dcallbk");
   ..... }

The message box never comes up when I run the installed version on another computer. Is there a missing dependency or something I need to install before it can be run on another machine? .net framework 4 is already installed on the xp machine. I tried turning my firewall off, and tried synchronous ftp with the same result.

Thanks, Matt

Answer 1

Try to use synchronous method for testing purpose or use EndGetResponse method to get an exception. BeginGetResponse wouldn't throw the exception on it's own.

Answer 2

Sounds Like a network issue or User rights error. Check the systems event log when you run the application the error could be hidden from you. On the local machine try using windows explorer to ftp a text file using the same URI that your program uses. You may need to elevate the users accesss or run your app as admin.

Answer 3

Try using .NET Reflector to look at your executable. You should be able to see what dependencies it has using that.