What are data annotations in ASP.NET MVC?
An example of an AI chatbot conversation about data annotations in ASP.NET MVC.
What are data annotations in ASP.NET MVC?
Data annotations are attributes used in ASP.NET MVC to enforce validation rules on model properties.
Can you give me some examples of data annotations?
Sure! Common data annotations include [Required], [StringLength], and [Range]. They help validate user input.
How do I use the [Required] annotation?
You can use it by adding [Required] above a property in your model class to ensure that it must be filled out.
What happens if a user doesn't fill in a required field?
If a required field is not filled, the model state will be invalid, and an error message will be displayed to the user.
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