How can I implement data validation in C#?

How can I implement data validation in C#?

You can implement data validation in C# using attributes like [Required], [StringLength], and custom validation logic.

Can you show me an example of using the [Required] attribute?

Sure! You can use it like this: public class User { [Required] public string Name { get; set; } }.

What if I need to validate a complex object?

For complex objects, you can create custom validation attributes or use the IValidatableObject interface.

How do I handle validation errors in my application?

You can catch validation exceptions and display error messages to the user, or use model state validation in ASP.NET.