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When your Contact object is being model-bound, we will automatically run validation. NET MVC 1.0 as well, though we didn't have a pluggable validation system so most people weren't even aware that we had any validation support.
The Default Model Binder class had validation hooks as well as built-in support for IData Error Info for validation.
I hope you will enjoy the tricks while programming with MVC Razor. If the value is not included in the method then the validator will fail and return false.The idea of creating validators is make them reusable between several models.When you press the submit button on this page then it will post the data to the server and the code written with in Explicit Server action will validate the input data.If input data is not valid then add error to model state by using method Add Model Error() as shown above.
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Entity Framework 6.x Questions and Answers EF is an O/RM framework to query the database in an object-oriented fashion.