C# attribute to check whether one date is earlier than the other

Question

I have a ViewModel for my MVC4 Prject containing two DateTime properties:

[Required]
[DataType(DataType.Date)]
public DateTime RentDate { get; set; }

[Required]         


        

Answer 1

Nothing like that exists in the framework. A common similar attribute is the RequiredIf. It is described in this post.

RequiredIf Conditional Validation Attribute