Validating input in c


16-Jul-2017 22:18

Any time your program accepts input from an uncontrolled source, there is a potential for a user to pass in data that does not conform to your expectations.

If you don’t validate the input, it might cause problems ranging from program crashes to allowing an attacker to execute his own code.

Conclusion In this article, we learned about the built in data annotation validation in ASP. If you have any question or comments regarding this article, please post it in the comment section of this article.

In the next article, we will learn to create a custom validation in ASP.

Note Data annotations are the attributes that we can find in the namespace.

These attributes provide Server side validation and the framework also supports client side validation.

Image source Google When you look at the bigger picture, you will realize how logic is only one piece of the validation story.

You also need to manage the user-friendly and localized error messages associated with the validation logic.

Custom Error Message and Localization Every validation attribute allows you to pass the name parameter with custom error message.

NET MVC Application and named it as This is the initial set up and we need to run this data annotation validation project.

Now, we are going to discuss the validation available in data annotation only by one.

The Range attributes will work with an integer, double and another overloaded versions will take Type as parameters, as shown below: If both Email ID and confirm Email ID are not same, the user will get model validation error, as shown below: Display Display attribute sets the friendly name for the model properties.

validating input in c-19

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We can use the Display attributes to fix the name for label for attribute handles formatting option for the properties via named parameters.Introduction Validating user input has always been a challenging task for the Web developers.



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