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Close form program when close button is disabled [duplicate]

This question already has answers here:
How can I prevent a user from closing my C# application?
(4 answers)
Closed 7 years ago.
I want to close a application when a button is pressed but I wanted to disable the close button (X button upper right).
I disabled the close button with this code:
protected override void OnFormClosing(FormClosingEventArgs e)
{
e.Cancel = true;
}
But now when I try to close the program with this code it wont work.
private void button1_Click(object sender, EventArgs e)
{
Application.Exit();
}
Is there a way to close this program when the button is clicked?

In the event handler, check the CloseReason property of the FormClosingEventArgs:
This allows you to behave differently depending on how the close was initiated, so in the case of Application Exit (or Windows Shutdown) you can allow the form to close.
protected override void OnFormClosing(FormClosingEventArgs e)
{
if (e.CloseReason != CloseReason.ApplicationExitCall
&& e.CloseReason != CloseReason.WindowsShutDown)
{
e.Cancel = true;
}
}

You're cancelling ALWAYS the closign of the form, so that's why it doesn't works.
Try this:
bool blockClosing = true;
protected override void OnFormClosing(FormClosingEventArgs e)
{
e.Cancel = blockClosing;
}
private void button1_Click(object sender, EventArgs e)
{
blockClosing = false;
Application.Exit();
}
In this way, when you press your button it will allow tha pp to be closed.

FormClosingEventArgs has a Reason member that tells you what exactly is trying to close your form. Simply allow ApplicationExitCall through without canceling it.

C# WPF Disable the exit/close button [duplicate]

This question already has answers here:
How to hide close button in WPF window?
(23 answers)
Closed 9 years ago.
Is it possible to disable the close button in a WPF form?
How can I disable the close button?
I have been searching around and found the solution below. But that works only in Windows Form!
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
e.Cancel = true;
}

in wpf this event called Closing :
public Window4()
{
InitializeComponent();
this.Closing += new System.ComponentModel.CancelEventHandler(Window4_Closing);
}
void Window4_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
e.Cancel = true;
}

You need to implement a windows hook to accomplish that. See this MSDN post for details.

Closing and re-opening a form without closing the application [duplicate]

This question already has answers here:
How do I prevent the app from terminating when I close the startup form?
(4 answers)
Closed 9 years ago.
I am trying to reset my main form so that I can reset all text boxes and variables easily. I have added a bool to my Progam.cs to enable the application to stay open while the form is closed and then re-opened. When I try to close it, the on_closing even fires twice. I'm not sure what to do to stop it happening, but I know it's got to be something simple.
Program.cs:
static class Program
{
public static bool KeepRunning { get; set; }
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main(string[] args)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
KeepRunning = true;
while (KeepRunning)
{
KeepRunning = false;
Application.Run(new Form1());
}
}
}
Form1:
private void button1_Click(object sender, EventArgs e)
{
Program.KeepRunning = true;
this.Close();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
DialogResult dialogResult = MessageBox.Show("You have unsaved work! Save before closing?", "Save?", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Exclamation);
if (dialogResult == DialogResult.Yes)
{
e.Cancel = true;
MessageBox.Show("saving then closing");
Application.Exit();
}
if (dialogResult == DialogResult.No)
{
MessageBox.Show("closing");
Application.Exit();
}
if (dialogResult == DialogResult.Cancel)
{
e.Cancel = true;
MessageBox.Show("canceling");
}
}

Remove your Application.Exit(). Since you are already in the FormClosing Event Handler, the Application will exit if Program.KeepRunning is set to false.

This happens because you call Application.Exit(). Since, your form is not closed yet, if you try to close the application, that instruction will try to close the form fist which, in turn, will call the event handler a second time.
Also, I don't think you need Application.Exit() because that's your only form and the application will, therefore, close automatically (at least that's what happened in my VB6 old times!)

How do i close shut down my application from another Form?

I have this event in a new Form:
private void CrawlLocaly_FormClosed(object sender, FormClosedEventArgs e)
{
}
Im not sure if to use Closed or Closing.
The reason is that i want to check if the user shut down the program for example by just closing the application from the taskbar.
If he did close it from the taskbar mouse right click then close then i want it to close all the program and not only this Form.
How can i do it ?

Application.Exit();
Will shut down your application.
Im not really sure if you can detect if he closed it via rightmouse menu. As far as I know you can only see the reasons provided in the FormClosedEventArgs. FormClosing will provide you with same reasons.

Use this event:
private void Form_FormClosing(object sender, FormClosingEventArgs e)
{
if(e.CloseReason == CloseReason.UserClosing)
{
//close forms
Application.Exit();
}
}
There is no way to check whether user closed your form by clicking 'X' or through TaskBar or any other way as the result of CloseReason will always be CloseReason.UserClosing

Well I Stick with such issue also.
In mine app I have 2 forms, #1 main, #2 - for settings - if user close it i want to know save settings or not. Also if settings are null - close app not only form, if user click button save - I want to close (hide) #2 form.
So where is my solution we set tag value to 1 if click button save, so we will know "who" try to close form:
Predefined:
btnSave.Tag = 0;
On save button click event:
btnSave.Tag = 1;
this.Hide();
its will trigger onclose event:
private void frmLogin_FormClosing(object sender, FormClosingEventArgs e)
{
if (btnSave.Tag.ToString() == "0")
{
DialogResult dlg = MessageBox.Show("Do you want to exit without finished setup connection?", "Form", MessageBoxButtons.YesNo, MessageBoxIcon.Information);
if (dlg == DialogResult.No)
{
e.Cancel = true;
}
else
{
e.Cancel = false;
this.Dispose();
Application.Exit();
}
}
else
{
this.Hide();
}
}

Preventing Windows from shutting down

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.