Process waitforexit close
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It should be called after all other methods are called on the process. To avoid blocking the current thread, use the Exited event. This method instructs the Process component to wait a finite amount of time for the process to exit.
If the associated process does not exit by the end of the interval because the request to terminate is denied, false is returned to the calling procedure. You can specify Timeout. Infinite for milliseconds, and Process. If you pass 0 zero to the method, it returns true only if the process has already exited; otherwise, it immediately returns false.
Note In the. NET Framework 3. When standard output has been redirected to asynchronous event handlers, it is possible that output processing will not have completed when this method returns. To ensure that asynchronous event handling has been completed, call the WaitForExit overload that takes no parameter after receiving a true from this overload. To help ensure that the Exited event is handled correctly in Windows Forms applications, set the SynchronizingObject property.
When executed against a Process instance the current thread is blocked until that process exits. You should avoid executing WaitForExit from the user interface UI thread of an application, as the blocking of this thread is likely to make the UI unresponsive. You should perform an asynchronous operation instead. To show the use of the method create a new console application project and add the following code to the Main method.
This code launches Notepad, capturing the newly generated Process object in the 'p' variable. It then waits for the process to exit, stopping the console application until you manually close Notepad. When Notepad stops, a message is displayed in the console. Start "notepad. WriteLine "Launched" ; p. WaitForExit ; p. Close ; Console.
WriteLine "Exited" ; Console. ReadKey ; NB: The Close method is called after waiting to ensure that the process, which has no remaining references, has its resources correctly released. Waiting Temporarily Waiting indefinitely for an external process to end is not always ideal. An alternative approach is to call WaitForExit and supply a timeout.
The timeout is specified using an integer argument that defines the maximum number of milliseconds to wait. If the external process terminates within this period the method returns true and the program resumes immediately. If the timeout period expires and the process is still active, the method returns false and control passes to the next statement.
We can demonstrate this with the following code, again within the Main method of a console application. Here we start Notepad and show the "Launched" message. The while loop repeatedly calls WaitForExit with a one second timeout. Each iteration outputs a full stop period character, giving the user some feedback.
1 комментарии к “Process waitforexit close”
Kajinn
on05.07.2020 в 03:23 говорит:
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