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Editorial Team
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Asked: 2026-05-12T23:08:43+00:00

I’ve only scraped the surface of validation in WPF and have come across a

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I’ve only scraped the surface of validation in WPF and have come across a scenario that is likely fairly common: I have a TextBox whose value needs to be validated against a variable data type, depending on the context. For example, if the context’s data type is ‘int,’ then the TextBox needs to accept only input that can be converted to an Int32.

My first thought was to inherit from the ValidationRule class and to include the context and to use a switch inside the overridden Validate function, but I am unable to bind anything to it since it is not a FrameworkElement.

Any thoughts?

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1 Answer

  1. Editorial Team

    You can expose IDataErrorInfo. This lets you do data validation with complex logic.

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