Question

The application is developed with C# and WPF.
I have a data binding to a static property of a non static class.
When the application is started, the binding does well, but if i change the bool of the binding, the view is not been updated.
How can i update the binding of this static property ?
NotifyChanged-Events don’t affected.

The class:

public class ViewTemplateManager : NotifyBase
{
    public static bool CanResizeColumns { get; set; }

    static ViewTemplateManager()
    {
        CanResizeColumns = true;
    }

The View:

<Thumb x:Name="PART_HeaderGripper" IsEnabled="{Binding Source={x:Static Member=viewManager:ViewTemplateManager.CanResizeColumns}}"

Answer 1

The only way to do this is if you have a reference to the associated BindingExpression.

Assuming you have a reference to the Thumb in your code, it would look like:

var bindingExpression = thumb.GetBindingExpression(Thumb.IsEnabledProperty);
if (bindingExpression != null)
    bindingExpression.UpdateTarget();

Your best bet would be to use a singleton pattern, like so:

public class ViewTemplateManager : NotifyBase
{
    public bool CanResizeColumns { get; set; }

    public static ViewTemplateManager Instance { get; private set; }

    static ViewTemplateManager()
    {
        Instance = new ViewTemplateManager();
    }

    private ViewTemplateManager()
    {
        CanResizeColumns = true;
    }
}

Then bind like so:

<Thumb x:Name="PART_HeaderGripper" IsEnabled="{Binding Source={x:Static viewManager:ViewTemplateManager.Instance}, Path=CanResizeColumns}}"

Then you simply need to raise the INotifyPropertyChanged.PropertyChanged event when you change CanResizeColumns.