formclosing

On a different question I suggested to use private void Form1_FormClosing(object sender, FormClosingEventArgs e) { while (processingLock) Application.DoEvents(); } in the FormClosing event (with processingLock becoming false immediately after a lengthy calculation was done). It should serve the purpose to have the application close down in an orderly manner and the original poster didn't use threads. On my suggested answer somebody commented that DoEvents is never good, providing this link: Use of Application.DoEvents() I read and (I think) understood the issue. In my opinion (which is still

When using the FormClosing event, why does the code e.Cancel = true; work, but new CancelEventArgs().Cancel = true; does not work? private void Form1_FormClosing(object sender, FormClosingEventArgs e) { e.Cancel = true; new CancelEventArgs().Cancel = true; } The event is raised by the Winforms plumbing code. The only way it can see that the custom event handler wants to alter the default behavior is through the e object. Creating a new CancelEventArgs object has no side-effects that the plumbing can detect. There's something else wrong, events are raised for the benefit of external code,

I have a code snippet that I want to run when the app is closing. So, I used FormCLosing event. But now i wanna place a confirmation message for exiting. Like, if the user clicks the Exit( X ) button, there'll be a prompt, if he clicks NO, then the app will not close and revert to previous state. Now I find that hard to achieve using FormClosing event. because it'll get executed no matter what button the user clicks. Any remedy for that? I mean, I need an even like ExitButtonPressed() .. You could try something like Private Sub Form1_FormClosing(ByVal sender As System.Object, ByVal e As System

I am using an MDIParent Form. When I close its child, the object of the child disposes. Is there a way to set child visibility to false instead of disposing? By default, when you close a form, it will be disposed. You have to override the Closing event to prevent it, for example: // Use this event handler for the FormClosing event. private void MyForm_FormClosing(object sender, FormClosingEventArgs e) { this.Hide(); e.Cancel = true; // this cancels the close event. } You can cancel the close event and hide instead. private void Form1_FormClosing(object sender, FormClosingEventArgs e) { e

How to get to the application closing event? I want to get application to save all unsaved operations or show the user a message "Are you sure about closing without saving all data?" something like this. If this will be helpful - the application is a SingleFrameAplication using Swing. You could use a shutdown hook . It works for Swing, AWT and even console applications. Example: Runtime.getRuntime().addShutdownHook(new Thread() { @Override public void run() { //do your stuff } }); mKorbel You have to add WindowListener to your JFrame / JDialog , about closing event is there method public void

I am looking to prompt the user to save data when they close a form window in a winforms application. I can't figure out how to trigger the prompt to the user, should they click the red box at the top right corner of the form. My application currently has a boolean flag, that is set to True on textchanged event. So I will only need to check for the boolean value in whatever event is trigger by the red box. Any advice? You need to handle the FormClosing event . This event is raised just before the form is about to be closed, whether because the user clicked the "X" button in the title bar or