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Posted by / 21-Jul-2019 11:19

Data binding establishes a connection between the application UI and business logic. You no longer have to write code that updates your UI or pass values down to your business logic.

When it breaks, it can be frustrating to figure out what went wrong.

An important part of the data binding is setting the source object.

For a continuous flow of data changes, the source property needs to emit a property Change event.

An exception is not thrown when data binding breaks, so global exception handlers are of no use.

Wouldn’t it be nice if you break into the debugger the instant you have a data binding error?

You can eliminate the data binding as the problem by adding a value converter and break into the debugger.

To use the value converter, reference the namespace of the assembly that contains the converter and add an instance of it to the resources of your window.Label; const target Label = new Label(); // create the Text Field import from "tns-core-modules/ui/text-field"; const target Text Field = new Text Field(); // create the Label import from "tns-core-modules/ui/label"; const target Label = new Label(); After that, the target objects bind to the source object.The Text Field uses a two-way binding, so the user input could change the property in the code.In this post, I will give you some tips on how you can debug your data bindings in WPF.Here is a sample When you don’t see anything displayed in your UI, it is hard to tell whether it’s data binding causing your issue or a problem with the visual layout of the control.

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And the binding of the Label is set to one-way in order to propagate changes only from the code to the UI.