C wpf binding not updating

Data binding can also mean that if an outer representation of the data in an element changes, then the underlying data can be automatically updated to reflect the change.

For example, if the user edits the value in a Text Box element, the underlying data value is automatically updated to reflect that change.

The figure demonstrates the following fundamental WPF data binding concepts: a binding source.

Elements can be bound to data from a variety of data sources in the form of common language runtime (CLR) objects and XML.In WPF, dependency properties of elements can be bound to CLR objects (including ADO.NET objects or objects associated with Web Services and Web properties) and XML data.As described in the last section, the direction of the data flow is determined by the value of the Mode property of the binding.However, does your source value get updated while you are editing the text or after you finish editing the text and point your mouse away from the Text Box?

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