How to consume Oauth2.0 REST API into ASP.NET Core MVC

Question

How to consume Oauth2.0 REST API into ASP.NET Core MVC Please send me some full project code if this is posibble Thank you

Sachin Singh · Answer

Program.cs using Microsoft.Identity.Client; var builder = WebApplication.CreateBuilder(args); // ... other configurations builder.Services.AddAuthentication(Microsoft.AspNetCore.Authentication.OpenIdConnect.OpenIdConnectDefaults.AuthenticationScheme) .AddMicrosoftIdentityWebApp(builder.Configuration.GetSection("AzureAd")); builder.Services.AddAuthorization(); var app = builder.Build(); // ... other configurations app.UseAuthentication(); app.UseAuthorization(); appsettings.json (this is just an example use any key-pair as per your API) { "AzureAd": { "Instance": "https://login.microsoftonline.com/", "Domain": "yourtenant.onmicrosoft.com", "ClientId": "your-client-id", "ClientSecret": "your-client-secret", "TenantId": "your-tenant-id", "CallbackPath": "/signin-oidc" } } public class YourController : Controller { private readonly IConfidentialClientApplication _confidentialClientApp; private readonly IHttpClientFactory _httpClientFactory; public YourController(IConfidentialClientApplication confidentialClientApp, IHttpClientFactory httpClientFactory) { _confidentialClientApp = confidentialClientApp; _httpClientFactory = httpClientFactory; } public async Task Index() { var result = await _confidentialClientApp.AcquireTokenForClient(new[] { "your-api-scope" }) .ExecuteAsync(); var accessToken = result.AccessToken; using var client = _httpClientFactory.CreateClient(); client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", accessToken); // Make your API request using client // Example: var response = await client.GetAsync("https://api.example.com/data"); // Process the response return View(); } }

Jignesh Kumar · Answer

Hello Manish, Please find below links that will help you out. https://www.c-sharpcorner.com/article/asp-net-mvc-oauth-2-0-rest-web-api-authorization-using-database-first-approach/ https://www.c-sharpcorner.com/UploadFile/8a67c0/database-first-approach-with-Asp-Net-mvc-step-by-step-part-1/