MVC 4 date validation regular expression

Question

I'm new with MVC 4, also I'm new with .net. I tried this to validate date (didn't work):

[Required]
[DataType(DataType.Date)]
public string Bdate { get; set; }

i did see this.

i need regular expression works for 1900s and 2000s(for all dates )

please help me.(please regular expression answer)

Answer 1

[Required]
[DataType(DataType.Date)]
[Range(typeof(DateTime),"1-Jan-1940","1-Jan-2000")]
public string Bdate { get; set; }