Deserialize JSON Date to C# Object with DateTime Returning 01/01/0001

April 8, 2022

I’m using Newtonsoft to translate a JSON string that presents a date

"[{\"Name\":\"Learning\",\"Start Date\":\"2022-03-01\",\"End Date\":\"2022-04-30\"]"

And I want to deserialize it to this custom object

public class MyObject
{
    public string Name { get; set; }
    public DateTime StartDate { get; set; }
    public DateTime EndDate { get; set; }
}

By doing this

var myObject = JsonConvert.DeserializeObject<List<MyObject>>(jsonRecords,
            new IsoDateTimeConverter { DateTimeFormat = "yyyy-MM-dd" });

But the StartDate and EndDate objects are always coming out as 01/01/0001, while I’d want them to show in this format: dd/MM/yyyy

I also tried to use new IsoDateTimeConverter { DateTimeFormat = "dd/MM/yyyy" } but that didn’t work either (and I think you need to use the format in which the date is coming from json?)

What am I doing wrong?

>Solution :

Add [JsonProperty("Start Date")] above public DateTime StartDate { get; set; } and similar above public DateTime EndDate { get; set; }:

public class MyObject
{
    public string Name { get; set; }
    [JsonProperty("Start Date")]
    public DateTime StartDate { get; set; }
    [JsonProperty("End Date")]
    public DateTime EndDate { get; set; }
}

The problem was that json property names (‘Start Date’) and class property names (‘StartDate’) were not the same so it defaulted to 01/01/0001.

This will work without the need for IsoDateTimeConverter.