I Have many winforms in a project. When I click on Cross button to close one specific form maybe it is running in the background process. So How can I stop that from running in background when I click on cross button. I have the code for exiting application;
Application.Exit();
But this also shows exception when from frmMainMenu I click on logoutMenuStrip option. For the LogoutMenuStrip I have the following code to forcefully exit the application. But still it shows some exception. My Question is how can I Prevent all exception when I click on that logoutMenuStrip.
I supposed that maybe on clicking the other forms closing they get
running in background
Code for LogoutMenuStrip:
private void logoutToolStripMenuItem1_Click(object sender, EventArgs e)
{
try
{
MessageBox.Show("Are you sure to QUIT ?", "Exit", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2);
Application.Exit();
}
catch
{
Application.Exit();
}
}
Thanks in advance :)
If you have multiple instances of your application running and one or more of those is in background, you can enumerate the processes and then kill them.
var processes=Process.GetProcessByName( "AppName" );
foreach(var process in processes )
process.Kill();
use Environment.Exit(0); it closes everything and shuts down your application
private void logoutToolStripMenuItem1_Click(object sender, EventArgs e)
{
try
{
MessageBox.Show("Are you sure to QUIT ?", "Exit", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2);
Environment.Exit(0);
}
catch
{
Environment.Exit(0);
}
}
Related
I am using below code to exit my entire application application with YesNo question messagebox my problem is that some times I got the message twice and other times I get it correctly as one message display ..
any one can help me why that happening ??
private void AppClose_Click(object sender, EventArgs e)
{
this.Close();
}
private void F0100_FormClosing(object sender, FormClosingEventArgs e)
{
DialogResult result;
result = MessageBox.Show("Are you sure you want to exit?", "Exit Message", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (result == DialogResult.Yes)
{
//Environment.Exit(1);
Application.Exit();
}
else
{ e.Cancel = true; }
}
I am assuming that the form in question is your main form i.e. You launch this Form as Application.Run(new Form1());
If that is the case, typically you don't need to do Application.Exit() under the Yes branch from FormClosing. So your code should be something like below
private void F0100_FormClosing(object sender, FormClosingEventArgs e)
{
if (e.CloseReason != CloseReason.UserClosing)
return;
DialogResult result;
result = MessageBox.Show("Are you sure you want to exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (result != DialogResult.Yes)
{
e.Cancel = true;
}
}
The superfluous Application.Exit() call, creates an extra FormClosing event
NOTE: You should also check the FormClosingEventArgs.CloseReason so you don't create an extra popup when say user is logging off or killing the process.
Then this answer might help you some. Basically, you need to use the one you commented out: Environment.Exit(0). The Application one is a graceful attempt at exiting that attempts to close forms. Your form is still open, so it receives a 2nd FormClosing call. It's all up to timing, really, but I'd think that most of the time you'd see the prompt twice.
I made an exit button as menu item with confirmation message
and below code do the job,.. but when I am trying to handle the X button I am getting the confirmation message twice I tried to comment the message on the exit button on the menu item but still getting the message twice when I click on YES
private void ExitMenuItem_Click(object sender, EventArgs e)
{
/*DialogResult result;
result = MessageBox.Show("are you sure?", "exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (result == DialogResult.Yes)
{
Application.Exit();
}
else
{ return; }*/
}
private void F0101_FormClosing(object sender, FormClosingEventArgs e)
{
DialogResult result;
result = MessageBox.Show(""are you sure?", "exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (result == DialogResult.Yes)
{
Application.Exit();
}
else
{ e.Cancel = true; }
}
Application.Exit() sends a message to your application to close again, use:
Environment.Exit(0);
Application.Exit Docs:
Informs all message pumps that they must terminate, and then closes
all application windows after the messages have been processed.
Environment.Exit Docs:
Terminates this process and returns an exit code to the operating
system.
So using Environment, the process is terminated. Even you call it inside a try..finally block, the finally block doesn't execute.
However, Application.Exit can be used when you need a chance to execute state saving code in the closing events (which is in your case calling the same method and thus showing the method twice).
i built an windows application using c# .
On form closing event i wrote a code like this to ask confirmation form user...
private void Approve_User_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("Do you really want to QUIT application...?", "Confirmation", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
Application.Exit();
}
else
{
e.Cancel = true;
}
}
sometimes it ask four times , even upto five times....
I want this only once if user press Yes then application should exit.
I need your help and suggestions.
Thanks in advance.
Apparently you are subscribing to this Approve_User_FormClosing event in a place which execute a few times. If you subscribe 4,5 times it will execute 4,5 times.
If you just want to capture application exit event have a look at this thread.
Edit
You need something like below to achieve your weird requirement.
private bool isExiting = false;
private void Approve_User_FormClosing(object sender, FormClosingEventArgs e)
{
if (isExiting)
return;
if (MessageBox.Show("Do you really want to QUIT application...?", "Confirmation", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
isExiting = true;
Application.Exit();
}
else
{
e.Cancel = true;
}
}
I am using windows form,I want to display the message to the user that the process is not complete if the user tries to shut down the windows or tries to closes the application before completion of process(the user forgot to complete the process),if the user presses OK i want to stop the window from shutting down and let the user complete the process,I did find some code on the net to do so but it is in VB not in c#
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (e.CloseReason.Equals(CloseReason.WindowsShutDown))
{
Microsoft.VisualBasic.Interaction.Shell("shutdown -a", AppWinStyle.MinimizedFocus, false, -1);
MessageBox.Show("Shutdown process cancelled!");
}
}
Better to use this piece of code snippet instead, play with e.Cancel as per your requirement:
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (e.CloseReason.Equals(CloseReason.WindowsShutDown))
{
if (MessageBox.Show("You are closing this app.\n\nAre you sure you wish to exit ?", "Warning: Not Submitted", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Stop) == DialogResult.Yes)
return;
else
e.Cancel = true;
}
}
Reference: SystemEvents.SessionEnding Event
Occurs when the user is trying to log off or shut down the system.
I want to ask the user before closing the application.
I'm using C# .NET 4.0 WPF. I can do it in windows forms, but not in WPF.
Event is fired when the user want to close the app. Message box appears, bun no matter which button is pressed (Yes or No) the application always closes. Why? Where is the mistake?
It works, but only when the user presses the "X". When the user presses the close button with Application.Current.Shutdown(); it is not working.
private void MainWindowDialog_Closing(object sender,
System.ComponentModel.CancelEventArgs e)
{
MessageBoxResult result = MessageBox.Show("Do you really want to do that?",
"Warning", MessageBoxButton.YesNo, MessageBoxImage.Question);
if (result == MessageBoxResult.No)
{
e.Cancel = true;
}
}
The Closing event cannot be cancelled if you call Application.Current.Shutdown(). Just call the Window.Close() method instead, which will give you a chance to veto the close operation. Once all your program's windows have closed the application will shutdown automatically.
For more information checkout the Application Management page on MSDN.
Just call YourMainWindow.Close() and use the Closing event as described before.
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (MessageBox.Show("Are you sure to exit?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
e.Cancel = false;
else
e.Cancel = true;
}
Why don't you just ask the user whether he wants to close the application, and then call Application.Current.Shutdown() like this:
private void closeButton_Click(object sender, RoutedEventArgs e)
{
if (MessageBox.Show("Do you want to exit?", "Confirm",
MessageBoxButton.YesNo) == MessageBoxResult.Yes)
{
Application.Current.Shutdown();
}
}