Keep checking existing file?

[winningElevent]

Hi everyone,

I have a question would like to ask. So far I know how to retrieve files from device, but sometimes device takes so long to produce file so I want my desktop to keep checking every 3seconds to see if file exist. Here is the conditions.

1- if file exists after checking for exisitng is True, then desktop application will continue to do other stuff.
2- if file doesn't exist after three times of checking, then desktop sends messagebox unable to retrieve file.

can someone help me on that? I'm stuck on how can I keep checking every 3 seconds, but not more than 3 times.

thanks in advance.

[LTCCTL]

Hi,

please provide information about the language and platform.

Regards
LTCCTL

[winningElevent]

opp sorry. I'm using C# under windowsXP and device is WM 5/6.

thanks.

[winningElevent]

opp sorry. I'm using C# under windowsXP and device is WM 5/6.

thanks.

Sorry I sort change my approach now. Now I just want my desktop to wait for number of seconds before executing the next statement, and here is what I got so far, but it seems the Timer Event doesn't get executed property probably becauset he call to waiting() is executed after the copying the device result file if-statement.

 
System.Timers.Timer time;//global Timer variable;
 
 
    private void StartTask()
    {
 
            //Connect to device and copy test case file onto device.
            using (RAPI rapi = new RAPI())
            {
                rapi.Connect(true);
                rapi.CopyFileToDevice(testCaseFile, @"\" + testCaseFile, true);
 
                if (rapi.DeviceFileExists(@"\" + deviceResultFile))
                    rapi.DeleteDeviceFile(@"\" + deviceResultFile);
 
                //Run the exe file.
                if (rapi.DeviceFileExists(@"\" + cameraDeviceExecutableFile))
                    rapi.CreateProcess(@"\" + cameraDeviceExecutableFile);
                else
                {
                    showTestImage(errorImage);
                    cameraRichTxtBox.SelectionColor = Color.Red;
                    cameraRichTxtBox.AppendText("\nDevice executable file does not exist.");
                }
 
                Waiting();
 
                if (rapi.DeviceFileExists(@"\" + deviceResultFile))
                {
                    rapi.CopyFileFromDevice(deviceResultFile, @"\" + deviceResultFile, true);
                    deviceResultFileExist = true;
                }
                else
                {
                    showTestImage(errorImage);
                    cameraRichTxtBox.SelectionColor = Color.Red;
                    cameraRichTxtBox.AppendText("\nDevice Result file does not exist.");
                    deviceResultFileExist = false;
                }
 
                rapi.Disconnect();
            }
 
       }
 
 
 
        //Function: Waiting
        //Purpose: 
        private void Waiting()
        {
            time = new System.Timers.Timer();
            time.Elapsed += new ElapsedEventHandler(TimerEvent);
            time.Interval = 1000;//each second will raise an event.
            time.Enabled = true;
        }
 
        private void TimerEvent(object source, ElapsedEventArgs e)
        {
            countWaiting++;
            MessageBox.Show(countWaiting.ToString());
 
            if(countWaiting == 10)
                time.Enabled = false;
        }
 

[winningElevent]

Please disregard this post because I misunderstood the Timer.