Wpf custom control binding not updating

But I’m not going to give up so soon, at least not while there are other options to consider 😉 The solution to our problem is actually quite simple, and takes advantage of the even when they’re not in the visual or logical tree.I don’t know the exact mechanism that enables this behavior, but we’re going to take advantage of it to make our binding work…Binding Expression: Path=Show Price; Data Item=null; target element is ‘Data Grid Text Column’ (Hash Code=32685253); target property is ‘Visibility’ (type ‘Visibility’) But none of these workarounds seems to work, we always get the same result…

The simplest user control might look like this: The simplest use of a user control would be like this: In the code above, I simply declare the user control and the rest is done for me. You can reference it in the code behind or you can reference it in the XAML. Once we know the property must be a dependency property (which simply means the property must be backed by a dependency property object) we can start to build it out: In the code above, we create our Text property as a dependency property and we introduce a reusable method called Set Value Dp() which uses the Call Member Name introduced in . Call Member Name let’s you reference your property name without creating a literal string in your code-behind.It checks if a local value is available, if not if a custom style trigger is active,... This method resolves the value by using a value resolution strategy that is explained in detail below.If a local value is available, it reads it directly from the dictionary.Normally my View Models inherit from my View Model Base base class, which provides a Raise Property Changed method and, when in debug mode, uses reflection to check if the property name is valid.Now I’d recently refactored the code so this particular View Model wasn’t using the base class, so my first instinct was that I’d simply mistyped the property name magic string in the event – but that was all fine.

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