Pause my application until a file can be read

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C#

Hi!

My application opens another application(RED TITIAN) to convert .pcl files into .pdf files and I must wait for a file, a log file that can be open when the conversion is complete. Until the I want to freez, sleep, pause my application , I tried this :

public void OprireProces(string fis)
       {
           FileInfo Size = new FileInfo(fis);
           if (Size.Length > 629145600)
           {
               Thread.Sleep(180000);
           }
           //daca fisierul pcl este mai mare de 100 MB pune pauza de 2 min

           else if (Size.Length > 104857600)
                {
                    Thread.Sleep(120000);
                }
           fis = fis.Replace(".pcl", ".csv");
           Process[] processlist = Process.GetProcessesByName("escapee");
           bool p = false;
           //se verifica daca fisierul csv poate fi citit
              p = VerificareCSV(fis);
           //daca p = false, adica fisierul csv nu poate fi citit, se reia functia de oprire a procesului
              if (!p)
                   OprireProces(fis);
           //daca p == true se opreste procesul escapee
              else
                   processlist[0].Kill();
       }

the function VerificareCSV, just checks if the respective file can be read or not, and returns false or true:

public bool VerificareCSV(string fis)
       {

           fis = fis.Replace(".pcl", ".csv");
           FileStream stream = null;
           try
           {
               stream = File.Open(fis, FileMode.Open, FileAccess.ReadWrite, FileShare.None);
           }
           catch (IOException)
           {
               //daca se intalneste o excetie de Input/Output
               //adica nu se poate deschide
               //sau este inca procesat de un thread
               return false;
           }
           finally
           {
               if (stream != null)
                   stream.Close();
           }
           return true;
       }

the problem occoures when my application has to wait for RED TITAN to convert big files, around 10 or 15 min., I think that Thred.Sleep is the cause, but I can think of another way to pause my application. The crash is ("MyApplication has stop working"...)


Can some one tell me were did I made a mistake ?

Thanks!