ASP.NET Core Web API - DateTime Data Annotations Problem

Question

Hello,

I am trying to validate an API action method that has a start date and an end date.

public class OrderHistoryRequestDto  
    {  
        [Required(ErrorMessage = "Please add StartDate to the request.")]  
        [DataType(DataType.Date)]  
        public DateTime StartDate { get; set; }  
        [Required(ErrorMessage = "Please add EndDate to the request.")]  
        [DataType(DataType.Date)]  
        public DateTime EndDate { get; set; }  
    }  

I am supposed to get a 400-bad request if I don't send one of the required fields.

But instead, it set the missing date as a default value.

How can I validate this model?

Thank you in advance.

Answer 1

I'm sure Viorel-1 made a typo and is recommending a nullable type.

    public class OrderHistoryRequestDto  
    {  
        [Required(ErrorMessage = "Please add StartDate to the request.")]  
        [DataType(DataType.Date)]  
        public DateTime? StartDate { get; set; }  
        [Required(ErrorMessage = "Please add EndDate to the request.")]  
        [DataType(DataType.Date)]  
        public DateTime? EndDate { get; set; }  
    }  

I tested the model with PostMan and an HTTP GET and received the following validation response.

{  
    "type": "https://tools.ietf.org/html/rfc7231#section-6.5.1",  
    "title": "One or more validation errors occurred.",  
    "status": 400,  
    "traceId": "00-13effc30183cfe634ea13672b70e6373-affffa0f4b34e5f1-00",  
    "errors": {  
        "EndDate": [  
            "Please add EndDate to the request."  
        ]  
    }  
}