Mvc validation regular expression only numbers?

Question

I tried the following code for digits-only validation for a contact number validation in Mvc web app.

[RegularExpression(@\"/(^\\(\\d{10})?)$/\", ErrorMessage =          


        

Answer 1

If don't have any restrictions other than numbers only, this should fit:

[RegularExpression(@"^\d+$", ErrorMessage = "Please enter proper contact details.")]
[Required]
[Display(Name = "Contact No")]
public string ContactNo { get; set; }