Why string with datetime is string for .net framework but DateTime for .net core?

Question

I'm using client's Swagger YAML file to generate models for one API where one property is a string type(ISO 8601) in swagger filevalidUntil: type: string and c# props is public string ValidUntil { get; set; } which were binding string data properly"validUntil": "2022-07-12T07:03:45.428Z" as string, but since the API migrated to .net core string value is being identified as DateTime and property is null.

Here is Swagger.yaml extract

 BaseClass:
  type: object
  title: BaseClass
  properties:
    id:
      type: string
    reference:
      type: string
    validUntil:
      type: string
    required:
    - id
    - validUntil

And this validUntil props in c#

 [Newtonsoft.Json.JsonProperty("validUntil", Required = Newtonsoft.Json.Required.Always)]
    [System.ComponentModel.DataAnnotations.Required(AllowEmptyStrings = false)]
    public string ValidUntil { get; set; }

I'm using NSwag to generate models.

..\..\packages\NSwag.MSBuild.11.20.1\tools\Win\NSwag.exe swagger2csclient /input:swagger.yaml /output:ApiModels.cs /GenerateClientClasses:false /namespace:Api.Model /GenerateDtoTypes:true /ClassStyle:Poco /GenerateJsonMethods:false /ArrayType:System.Collections.Generic.List /ArrayBaseType:System.Collections.Generic.List /GenerateExceptionClasses:false

I just want to understand the reasons behind this. It is something related to Newtonsoft json library?

Does the `validUntil` property in the yaml file have a `format` value? — gunr2171, Jul 27 '22 at 12:53
So there's nothing in the yaml to indicate that it's a date, only a string? Can you [edit] your post with a [mre], including the yaml, how you're generating the C#, and the resulting C#? — gunr2171, Jul 27 '22 at 12:57

Why string with datetime is string for .net framework but DateTime for .net core?

0 Answers0