Summary
There are plenty examples of implementing IDataErrorInfo on the web, but they tend to ignore broken bindings. Broken Bindings occur for a number of reasons such as the binding source can’t be found or the Path is invalid. They also occur when the input value can’t be coerced back to the data type of the source.
Excerpt
"There are plenty examples of implementing IDataErrorInfo on the web, but they tend to ignore broken bindings. Broken Bindings occur for a number of reasons such as the binding source can’t be found or the Path is invalid. They also occur when the input value can’t be coerced back to the data type of the source."
Full Link
http://adammills.wordpress.com/2010/07/21/mvvm-validation-and-type-checking/
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