¿Cómo depurar enlaces de datos en un proyecto de código WPF?

How to debug data bindings in WPF codeproject?

Data bindings is one of the most widely used features of WPF. However, debugging data bindings is not as well known, which I’ll attempt to rectify with this article. There are essentially two methods we can use to debug our data bindings, when they do not throw an exception. Using IValueConverter to step into the debugger. Using the trace messages.

You can change the Document property to bind the editor to another document. It is possible to bind two editor instances to the same document; you can use this feature to create a split view. Here is the simplified definition of the TextDocument: In AvalonEdit, an index into the document is called an offset.

PropertyPath for Objects in Data Binding Data binding is a WPF feature whereby you can bind to the target value of any dependency property. However, the source of such a data binding need not be a dependency property; it can be any property type that is recognized by the applicable data provider.

The TextDocument class that implements the Document binding exposes the text through a simple CLR property.

Your Characters should then be of type ObservableCollection and your XAML should be changed so that the textboxes are binding to Foo.Text: binding requires path or xpath Change your TextBox binding to the following.

However, a normal scenario in WPF bindings is to throw exceptions in case the user input cannot be converted to the target type (for instance, a TextBox bound to a integer field; the input of a non-numeric string results in a FormatException, the input of number that is too large results in an OverflowException).

A typical error looks like this: System.Windows.Data Information: 10 : Cannot retrieve value using the binding and no valid fallback value exists; using default instead. BindingExpression:Path=IDontExist; DataItem=null; target element is ‘TextBlock’ (Name=”); target property is ‘Text’ (type ‘String’)