CODEWITHSUNDEEP
c#asp.net-mvc
user1765862
user1765862

Reputation: 14155

time validation using annotations

I want to enter date time as string inside textbox. Actually there are two input fields

Both should be in format like 00:00 so I can enter

From time 00:00 To time 23:59

how can validate user input in asp.net mvc viewmodel using annotations so I can restrict users input from 00:00 as min value and 23:59 as max value?

Upvotes: 1

Views: 234

Answers (2)

111
111

Reputation: 1779

Using regular expression, you can validate your model, and client side validation also work with this like 

[RegularExpression(@"^(0[1-9]|1[0-2]):[0-5][0-9] (am|pm|AM|PM)$", ErrorMessage = "Error message")]
public string FromTime {get;set;}

Upvotes: 0

JensB
JensB

Reputation: 6850

You could create a custom attribute that you can decorate your property with.

namespace JensB.Tools.CustomAttributes
{
    public class IsDateOk: ValidationAttribute
    {
        public override bool IsValid(object value)
        {
            if (value == null) return false;
            if (value.GetType() != typeof(DateTime)) throw new InvalidOperationException("can only be used on DateTime properties.");
            bool isValid = // do validation here

            return isValid;
        }
    }
}

You can then decorate your property like this:

[IsDateOk(ErrorMessage="Dates must be .....")]
public property DateTime MyTime {get; set ;}

The nice part about doing this is that you basically dont need to code anything on the front end and just need to display the @Html.ValidationMessageFor( x=> ....) to make this work

Upvotes: 2

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