Keep checking existing file?
Question posted by: winningElevent
(Newbie)
on
August 20th, 2008 04:31 AM
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.
4
Answers Posted
Hi,
please provide information about the language and platform.
Regards
LTCCTL
opp sorry. I'm using C# under windowsXP and device is WM 5/6.
thanks.
Quote:
Originally Posted by 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.
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System.Timers.Timer time;//global Timer variable;
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private void StartTask()
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{
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//Connect to device and copy test case file onto device.
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using (RAPI rapi = new RAPI())
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{
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rapi.Connect(true);
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rapi.CopyFileToDevice(testCaseFile, @"\" + testCaseFile, true);
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if (rapi.DeviceFileExists(@"\" + deviceResultFile))
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rapi.DeleteDeviceFile(@"\" + deviceResultFile);
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//Run the exe file.
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if (rapi.DeviceFileExists(@"\" + cameraDeviceExecutableFile))
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rapi.CreateProcess(@"\" + cameraDeviceExecutableFile);
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else
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{
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showTestImage(errorImage);
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cameraRichTxtBox.SelectionColor = Color.Red;
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cameraRichTxtBox.AppendText("\nDevice executable file does not exist.");
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}
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Waiting();
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if (rapi.DeviceFileExists(@"\" + deviceResultFile))
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{
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rapi.CopyFileFromDevice(deviceResultFile, @"\" + deviceResultFile, true);
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deviceResultFileExist = true;
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}
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else
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{
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showTestImage(errorImage);
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cameraRichTxtBox.SelectionColor = Color.Red;
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cameraRichTxtBox.AppendText("\nDevice Result file does not exist.");
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deviceResultFileExist = false;
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}
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rapi.Disconnect();
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}
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}
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//Function: Waiting
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//Purpose:
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private void Waiting()
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{
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time = new System.Timers.Timer();
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time.Elapsed += new ElapsedEventHandler(TimerEvent);
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time.Interval = 1000;//each second will raise an event.
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time.Enabled = true;
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}
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private void TimerEvent(object source, ElapsedEventArgs e)
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{
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countWaiting++;
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MessageBox.Show(countWaiting.ToString());
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if(countWaiting == 10)
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time.Enabled = false;
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}
Please disregard this post because I misunderstood the Timer.
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