I recently upgraded my project from Angular 11 to Angular 16 and encountered an issue with the DTO models generated using the NPM package "ng-swagger-gen" from the Swagger JSON file of the Web API. In my C# class on the Web API side, I have a DateTime field for the start time of an entity called Action:
[DataMember] public DateTime? actionStartDate { get; set; }
The TypeScript model created by "ng-swagger-gen" includes an optional string field for the action's start date in my Angular project:
actionStartDate?: string;
In my HTML, I use a DateBox widget from the DevExtreme API to update the action's start date in a popover form:
<dx-date-box type="date"
displayFormat="shortdate"
[(value)]="updateAction.actionStartDate"
[min]="today">
<dx-validator>
<dxi-validation-rule type="required" message="The action's start date is a required field"></dxi-validation-rule>
</dx-validator>
</dx-date-box>
This setup worked without issues in Angular 11, but after upgrading to Angular 16, I encounter an error during compilation ("ng build"):
error TS2322: Type 'string | number | Date' is not assignable to type 'string'. Type 'number' is not assignable to type 'string'.
28 [(value)]="updateAction.actionStartDate"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
29 [min]="today">
Strangely, Visual Studio Code does not highlight this error, leading to confusion when trying to pinpoint the issue. Additionally, even when the binding variable in my component is defined as a 'Date', I still face the same error.
I am seeking insights into why this error occurs and possible solutions to resolve it.
Thank you, Eddie