Execute code when a WPF closes - wpf

Question

I am not familiar with using event handlers, and I was wondering if anyone had or could direct me to some code that shows how to use an event handler that will execute code on the Close/Closed event?
I know this can be done because of this answered question:
Run code on WPF form close
But I need some direction.
Thank you =)

Answer 1

It's just this XAML
<Window ... Closing="Window_Closing" Closed="Window_Closed">
...
</Window>
and code for both the Closing and Closed events
private void Window_Closing(object sender, CancelEventArgs e)
{
...
}
private void Window_Closed(object sender, EventArgs e)
{
....
}

Answer 2

If you want to do it all from code behind put this in your windows .cs file
namespace WpfApplication1
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.Closed += new EventHandler(MainWindow_Closed);
}
void MainWindow_Closed(object sender, EventArgs e)
{
//Put your close code here
}
}
}
If you want to do part in xaml and part in code behind do this in xaml
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" Closed="MainWindow_Closed">
<Grid>
</Grid>
</Window>
and this in .cs
namespace WpfApplication1
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
void MainWindow_Closed(object sender, EventArgs e)
{
//Put your close code here
}
}
}
The above to examples you can apply to any form in a xaml app. You can have multiple forms. If you want to apply code for the entire application exit process modify your app.xaml.cs file to this
namespace WpfApplication1
{
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
protected override void OnExit(ExitEventArgs e)
{
try
{
//Put your special code here
}
finally
{
base.OnExit(e);
}
}
}
}

Answer 3

You can override the OnExit function in App.Xaml.cs like this:
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
protected override void OnExit(ExitEventArgs e)
{
//do your things
base.OnExit(e);
}
}

Answer 4

If you are using C# on Microsoft Visual Studio, the following worked for me.
In your Window.cs file
using System;
using System.ComponentModel;
using System.Windows.Forms;
namespace Name_Space
{
public partial class Window : Form
{
public Window()
{
InitializeComponent();
//...
}
private void Window_Load(object sender, EventArgs e)
{
//...
}
private void Window_Closed(object sender, EventArgs e)
{
// Your code goes here...!
}
}
}
In your Window.Designer.cs file add this line to the following method
...
private void InitializeComponent()
{
...
//
// Window
//
...
this.Closed += new System.EventHandler(this.Window_Closed); // <-- add this line
}
...