asp.net-web-api

问题 I have found several tutorials on how to upload an image or multiple images in Xamarin. However, I have not found how to send multiple images with each image containing some satellite data. This is how the model looks like on the server: public class AppFileDTO { public IFormFile File { get; set; } public string CategoryName { get; set; } public string CategoryDescription { get; set; } public string Detail { get; set; } } But the controller needs a list of data. Here is the Asp.Net Web Api

问题 I'm using OData v4 with WebAPI with these nuget-packages: Microsoft.Data.OData 5.7.0 Microsoft.AspNet.WebApi.OData 4.0.30506 I can't get groupby to work with count. It should be the most simple thing. I have a simple table/entity called Delivery . It has a status column (among several other ones). What I basically want to do is this SQL query, but with OData: SELECT e.status, count(*) AS total FROM Delivery e GROUP BY e.status I've tried using countdistinct, but it doesn't give me the correct

问题 I'm using OData v4 with WebAPI with these nuget-packages: Microsoft.Data.OData 5.7.0 Microsoft.AspNet.WebApi.OData 4.0.30506 I can't get groupby to work with count. It should be the most simple thing. I have a simple table/entity called Delivery . It has a status column (among several other ones). What I basically want to do is this SQL query, but with OData: SELECT e.status, count(*) AS total FROM Delivery e GROUP BY e.status I've tried using countdistinct, but it doesn't give me the correct

问题 I'm using the QBO API and am at the step where I'm trying to retrieve the access and refresh tokens. When I send my request I get an error when I try to get the response that states "The remote server returned an error: (400) Bad Request". See the code below. I've tried a number of variations in my header, but cannot get it to work. Any ideas? Code (using vb.net): Sub Step2_GetTokens() 'Delcare variables. Dim vHTTPREQUEST As HttpWebRequest Dim vHTTPRESPONSE As HttpWebResponse Dim

问题 I was needing to make a post or put a validation on the server side to check if the email is unique. In the research I have always done the example was a traditional MVC application and never an api. In many cases I saw that the [Remote] https://docs.microsoft.com/pt-br/aspnet/core/mvc/models/validation?view=aspnetcore-2.2#remote-attribute . I tried to implement according to the documentation, but debugging verified that the function in the controller is neither called. User.cs using System;

问题 I'm working on a Core 3.1 Web API and an MVC application that uses it. In the MVC app I have UserRepo set up containing an Update method: public async Task<User> Update(User user) { HttpClient client = _clientFactory.CreateClient("namedClient"); HttpResponseMessage response = await client.PutAsync($"api/Users/{user.Id}", ContentEncoder.Encode(user)); try { response.EnsureSuccessStatusCode(); } catch (Exception ex) { if ((int)response.StatusCode == StatusCodes.Status409Conflict) { throw; } }

问题 https://i.imgur.com/JphyUEv.png After following this YouTube video https://youtu.be/PlW9dgU_aVM going through how to setup entity framework core database first CRUD operations in ASP.NET CORE Application. At this point https://youtu.be/PlW9dgU_aVM?t=578 an unhandled exception occurred while processing the request, how do I go about fixing the problem (Ref image above). P.S sorry for read and deciphering This is for a REST Api using entity framework core database first CRUD operations in ASP

问题 I have asp.net core 2.2 web Application. The application contains Command and Query Actions, Command Actions must return typed json response: { $type:"A.B.Customer, x.dll ", id: 11231, name: "Erwin .." } Query Actions must return non typed response: { id: 34234, name: "Erwin .. " } We can choose one outputformatter for Json responses at startup. services.AddMvc().AddJsonOptions(o => { SerializerSettings.TypeNameHandling=Newtonsoft.Json.TypeNameHandling.Objects // SerializerSettings

问题 I have a project, It's a web application that requires Windows Authentication. I've setup an Active Directory at home using my NAS virtualization. Then I've created a VMWare Server for IIS which is a member of that domain on my desktop which I also use for development. I've created the Web API and installed it into that VMWare server. When I call a routine directly, it works and return results but when I use the Web API routine from my javascript web application I keep on getting 401 error. I

问题 I'm working on a Core 3.1 Web API and an MVC application that uses it. In the MVC app I have UserRepo set up containing methods that send requests to the API: public class UserRepo : IUserRepo { private readonly IHttpClientFactory _clientFactory; public UserRepo(IHttpClientFactory httpClientFactory) { _clientFactory = httpClientFactory; } public async Task<User> GetById(int Id) { // same code structure as Update ... } public async Task<User> Update(User user) { HttpClient client =