>I use the Process class to execute a DOS command.
>
>The command is like this:
>
>c:\Windows\System32\cmd.exe /c if not exist y: net use y: \\1.1.1.1\h$
>
>So, basically, if the y: drive does not exist, it will map it. This works well from the CMD window.
>
>But, if I try the same from a .NET application, I get this:
>
>y: has a remembered connection to \\1.1.1.1\f$. Do you
>want to overwrite the remembered connection? (Y/N) [Y]:
>
>So, basically, it seems from the .NET application, it does not recognize that y: already exists. So, it executes the command thus resulting in this output.
>
>Anyone would have an idea of what is going on here?

No, but there are at least a couple of workarounds:

1. You can always delete the mapping first, that causes no harm if it doesn't exist i.e.

cmd /c net use y: /del

2. In .Net you could check to see if the drive mapping exists e.g. use the DriveInfo class, if it doesn't throw an error trying to get info for Y: then it already exists