WebFeb 16, 2024 · Basically, null! applies the ! operator to the value null. This overrides the nullability of the value null to non-nullable, telling the compiler that null is a "non-null" type. Typical usage Assuming this definition: class Person { // Not every person has a middle name. We express "no middle name" as "null" public string? MiddleName; } WebFeb 21, 2024 · if it is inside of the same controller try to replace the line. return Created(new Uri(Url.Link("GetUserByID", new { user_id = res })), User2Insert);
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WebJun 18, 2014 · In the Session constructor the url parameter is null because your JSON object doesn't have url property. May be in the BaseRequest class you use this url param and you receive the Value Can't be Null error. You can change just the name of parameter if this is the issue: public Session (string selfUri ) : base (selfUri) { } WebMay 14, 2024 · However, for some reason (after upgrading from EF Core 2.2 to 3.0), this code throws the following error: System.ArgumentNullException: Value cannot be null. (Parameter 'entity') at Microsoft.EntityFrameworkCore.Utilities.Check.NotNull [T] (T value, String parameterName) nms publishers
ASP.NET MVC Value cannot be null. on DropDownList
WebFeb 29, 2016 · Thanks for your help everyone. I figured out this way to fix it, based on you telling me what was null. [HttpPost, ActionName("Edit")] public ActionResult EditConfirmed(int id, string Testimonial) { TestimonialsContext testContext = new TestimonialsContext(); Testimonials testimonial = … WebThe problem is that when i try to set the path property to null, It throws an ArgumentException. simply running this code: new Blob { Path = null }; Results into this: System.ArgumentNullException: Value cannot be null. WebFeb 9, 2024 · 0. I am getting an exception 'The value cannot be null or empty. (Parameter 'mediaType')' when trying to send an attachment using the RestSharp library. For email sending, I am using MailGun api and the solution is on .NET 7 framework. var client = new RestClient (new Uri (BaseUrl)) { `Authenticator = new HttpBasicAuthenticator ("api", … nm spect mpi