CODEWITHSUNDEEP
wpfwpf-controlsbindingprism
OrPaz
OrPaz

Reputation: 1085

WPF Binding Order - How To Change?

I have a toggle button which i bind its 'Tag' property to an object. I then bind the 'IsChecked' property to its 'Tag' property. My problem is that the 'IsChecked' is called first when the window loads and the 'Tag' second. How could i make the 'Tag' property bind first?

<ToggleButton>

    <ToggleButton.Tag>
        <Bind An Object...>
    </ToggleButton.Tag>

    <ToggleButton.IsChecked>
        <Binding Converter="{StaticResource SomeConverter}" Path="Tag" RelativeSource="{RelativeSource Self}"/>
    </ToggleButton.IsChecked>

</ToggleButton>

Upvotes: 1

Views: 1811

Answers (2)

Kent Boogaart
Kent Boogaart

Reputation: 178780

Why does order matter? Is it because your converter doesn't handle the case when the value is null, because it should - even if it returns Binding.DoNothing. When Tag is set to something, your IsChecked binding should refresh and your converter should run again. Is that not the case?

Upvotes: 4

Svisstack
Svisstack

Reputation: 16656

You can bind this source (source what you binding to Tag) directly to Tag and IsChecked, then you don't have IsChecked binding dependend on Tag and you dont care about race condition and you don't need any order.

Upvotes: 1

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