Model validate date format in c# asp.net web api

Question

I am mapping the web api Get request complex type input parameter with a model and I want to validate the date format of the input type in the model.

My input uri is as follows http://localhost:xxxx/api/games/?id=5&date=2018-01-17

In my GameController

public IHttpActionResult Get([FromUri]Gamedata) {

 if (ModelState.IsValid) {
 }
 else {

 }
}

In my model class

public class Game
    {
        [Required]
        public int? Id { get; set; }

        [Required]
        public string date { get; set; } // Validate the date format "YYYY-MM-DD"


}

I would like to validate the date format "YYY-MM-DD". How this can be achieved? I am reading this. But don't know which is the annotation to be used?

Why don't you use DateTime object instead for string? then you can format the dateString based on locale na? — sujith karivelil
– sujith karivelil, Commented Jan 17, 2018 at 11:52

Ehsan Ullah Nazir · Accepted Answer · 2018-01-17 12:03:14Z

5

You can do this

 [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]

In your model

    public class Game
    {
        [Required]
        public int? Id { get; set; }

        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]
        public DateTime date { get; set; } // Validate the date format "YYYY-MM-DD"
     }

You can also look at DateTime.GetDateTimeFormats Method ()

edited Jan 17, 2018 at 12:03

answered Jan 17, 2018 at 11:49

Ehsan Ullah Nazir

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