Encapsulating repetitive binding parameters in Xaml

Question

I hope this is a duplicate, but I seem to be having searchers block...

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In WPF forms, I'm finding myself repeatedly specifying a consistent set of Binding parameters via a lot of cut/paste, e.g.:-

<dxe:TextEdit EditValue="{Binding Name, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True, NotifyOnValidationError=True}" />

...

<dxe:TextEdit EditValue="{Binding Days, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True, NotifyOnValidationError=True}" />

What's the cleanest way to define a markup extension (or something equivalent but more appropriate) which allows me to remove the boilerplate and be able to replace that with e.g.:

<dxe:TextEdit EditValue="{mine:EditorBinding Name}" />

...

<dxe:TextEdit EditValue="{mine:EditorBinding Days>" />

For bonus points, it would be nice to still be able to override the established default for the 5% of cases where that is necessary [but if something small can accomplish the core goal cleanly with minimal fuss, that'll do nicely either...]

Answer 1

You could simply create a derived Binding class, because Binding is already derived from MarkupExtension.

public class EditorBinding : Binding
{
    public EditorBinding()
    {
        UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
        ValidatesOnDataErrors = true;
        NotifyOnValidationError = true;
    }

    public EditorBinding(PropertyPath path)
        : this()
    {
        Path = path;
    }
}