Wpf datatemplate binding not updating


07-Jan-2020 12:14

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…

It can be very difficult then to bind a property on those elements…

Let’s illustrate with a simple example: we want to display a list of products in a System. Data Error: 2 : Cannot find governing Framework Element or Framework Content Element for target element.

Sample apps that demonstrate In the following sections, we'll take a closer look at the binding source, the binding target, and the binding object.

And we'll link the sections together with the example of binding a button's content to a string property named Next Button Text, which belongs to a class named Host View Model.

However, in some cases the is not accessible: it happens for elements that are not part of the visual or logical tree.You can choose to use either the markup extension or the markup extension.And you can even use a mixture of the two in the same app—even on the same UI element.With my test setup this works fine, but when I'm contacting a service to retrieve appointment, the collection is empty at the moment the month is switched and the appointments are added on arriving back from the service (one by one).

The problem now is that the selector is not triggered when the binded property is changing. I found a post with the next solution: BUT this will not work for me, when you change the mont the current date will be changed and I will retrieve a new list and the binded list is empty again.

Data binding allows you to separate the concern of data from the concern of UI, and that results in a simpler conceptual model as well as better readability, testability, and maintainability of your app.