Where do event handlers (not dealing with windows controls) go in a WPF project

I am trying to convert a C# console application into a WPF application. However, I can't seem to figure out where to put my event handlers. In the console application I just had them in Main() so I thought I could register them in MainWindow() in the WPC application, but that doesn't seem to work. To clarify, this is an event handler for something other than the windows controls, specifically one from FiddlerCore. Thanks for your help.

In principle you can handle events for non-controls in WPF just the same as you would in a Console or Windows Forms application.

For example, if you start a new WPF project, add a button to it and the add this class:

namespace WpfApplication1

{

class Class1

{

public EventHandler Fire;

public void OnFire(object sender, EventArgs e)

{

Fire(sender, e);

}

and now add this code to the Window class:

namespace WpfApplication1

{

public partial class MainWindow : Window

{

Class1 c1 = new Class1();

public MainWindow()

{

InitializeComponent();

c1 = new Class1();

c1.Fire += Class1_Fire;

}

private void Class1_Fire(object sender, EventArgs e)

{

MessageBox.Show("Class1's event has been fired!");

}

private void button1_Click(object sender, RoutedEventArgs e)

{

c1.OnFire(c1, EventArgs.Empty);

}

then, when you click the button, the MessageBox displays just fine.

I know next to nothing about Fiddlercore but I can't think of any obvious reason why it wouldn't work with WPF if you register your event-handlers in the MainWindow constructor.

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Vulpes14y ago
In principle you can handle events for non-controls in WPF just the same as you would in a Console or Windows Forms application.

For example, if you start a new WPF project, add a button to it and the add this class:

namespace WpfApplication1
{
class Class1
{
public EventHandler Fire;

public void OnFire(object sender, EventArgs e)
{
Fire(sender, e);
}
}
}

and now add this code to the Window class:

namespace WpfApplication1
{
public partial class MainWindow : Window
{
Class1 c1 = new Class1();

public MainWindow()
{
InitializeComponent();
c1 = new Class1();
c1.Fire += Class1_Fire;
}

private void Class1_Fire(object sender, EventArgs e)
{
MessageBox.Show("Class1's event has been fired!");
}

private void button1_Click(object sender, RoutedEventArgs e)
{
c1.OnFire(c1, EventArgs.Empty);
}
}
}

then, when you click the button, the MessageBox displays just fine.

I know next to nothing about Fiddlercore but I can't think of any obvious reason why it wouldn't work with WPF if you register your event-handlers in the MainWindow constructor.
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