I can't Data Bind to a local variable in WPF/XAML

Question

I want a textbox to display the value of a variable when I click it (an iteration of 1 to 100), I do not know what I am doing Wrong:

When I run the project nothing i

Answer 1

You need to make the property tell the binding that it has updated. The standard way to do this is via:

1. Implementing INotifyPropertyChanged
2. Making the myText property a DependencyProperty
3. Another maybe less used way is to raise the event manually, like this:

public void Button_Click_1(object sender, RoutedEventArgs e)
{
    myText = "Clicked";
    BindingOperations.GetBindingExpressionBase(myTextBox, TextBlock.TextProperty).UpdateTarget();
}

Note that your TextBlock has the confusing name myTextBox