Open exe as service without "Interactive Service Detection" message in window 7 - windows-services

Question

I have a simple application that watches a folder for any changes as following:
private void Form1_Load(object sender, EventArgs e)
> {
> FileSystemWatcher w = new FileSystemWatcher();
> w.Path = #"C:\temp";
> w.Changed += new FileSystemEventHandler(OnChanged);
> w.Created += new FileSystemEventHandler(OnChanged);
> w.Deleted += new FileSystemEventHandler(OnChanged);
> w.Renamed += new RenamedEventHandler(OnChanged);
> // Begin watching.
> w.EnableRaisingEvents = true;
}
// Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
// Specify what is done when a file is changed, created, or deleted.
MessageBox.Show("File: " + e.FullPath + " " + e.ChangeType + Path.GetFileName(e.FullPath));
}
I added the same as service from the command prompt as
sc create <service name> binPath= <path of the exe file>
This added the exe in the services and also made the entries in Registry. But when I tried to start the service as
sc start <service name>
it showed up the "Interactive Service Detection" message.
I want to avoid this message from popping up and start the service.
I also need this to be done in c# but if anyone has any idea about doing it in cmd I can add it as a batch file and execute the same.
EDIT I
As #Seva suggested I created a service that calls the exe that I wish. I wrote the following code to start the exe on start of the service:
protected override void OnStart(string[] args)
{
base.OnStart(args);
BackgroundWorker bw = new BackgroundWorker();
bw.DoWork += new DoWorkEventHandler(bw_DoWork);
bw.RunWorkerAsync();
}
private void bw_DoWork(object sender, DoWorkEventArgs e)
{
p.StartInfo.CreateNoWindow = false;
p.StartInfo.WindowStyle = ProcessWindowStyle.Normal;
p.StartInfo.WorkingDirectory = #"<my exe path>";
p.StartInfo.FileName = "<myexe.exe>";
p.StartInfo.Arguments = #"<my exe path>";
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.Start();
p.WaitForExit();
base.Stop();
}
I installed the service successfully but is not starting the exe on starting.
EDIT II
The exe started. The service's property had to be configured to allow service interaction with desktop, but then again the "Interactive service detection" message is coming up.

Answer 1

You will have to rearchitecture your windows service into two parts -- a GUI-less service process and a separate UI app that runs on user desktop. There are many ways service can communicate with UI app. These SO questions will get you started:
GUI and windows service communication
Communication between windows service and desktop app
There is no other way around. BTW, your existing approach is already broken -- for Non-admin users and for remote desktop sessions -- they won't see UI from a service even if they want to.