C#

dojohansen wrote:

You are indeed missing something: The point.

dojohansen wrote:

How would you suggest storing the decryption key for your proposed implementation?

Ashfield wrote:

Can you explain a bit more what you mean? I am, genuinely, puzzled by how, having a licence file which is distributed with your application, can limit the number of concurrent users. Or have I misunderstood what you meant?

Ashfield wrote:

I know this could be reverse engineered, but if you use obfusication etc its relatively safe from most casual users

Ashfield wrote:

Its all down to how valuable your application is.

Ashfield wrote:

Please accept my apologies

Ashfield wrote:

I assume that each installation (i.e. on each PC) there is a copy of the app and a digitally signed licence file.

dojohansen wrote:

I apologize for retorting!

dojohansen wrote:

So you're absolutely right, if maybe needlessly sarcastic,

dojohansen wrote:

I guess I couldn't quite believe that the poster would be asking about how the systems can communicate without saying more about it

void btnRun_click(object sender, EventArgs e)
{
  if (btnRun.Tag != null)
    MessageBox.Show("Not now you idiot, I'm busy.");
  else 
    ThreadPool.QueueUserWorkItem(new WaitCallback(process));
}


void process(object state)
{
  running = true;
  // Use try-finally so the flag is updated even if an exception occurs.
  try
  {
     ...
  }
  finally
  {
     running = false;
  }
}