request to web api client download file c# Call a Web API From a .NET Client (C#) This content is for a previous version of .NET. New development should use ASP.NET Core. For more information on using ASP.NET Core Web API, see: This tutorial shows how to call a web API from a .NET application, using System.Net.Http.HttpClient. In this tutorial, a client app is written that consumes the following web API: Action HTTP method Relative URI Get a product by ID GET /api/products/ id Create a new product POST /api/products Update a product PUT /api/products/ id Delete a product DELETE /api/products/ id. To learn how to implement this API with ASP.NET Web API, see Creating a Web API that Supports CRUD Operations. For simplicity, the client application in this tutorial is a Windows console application. HttpClient is also supported for Windows Phone and Windows Store apps. For more information, see Writing Web API Client Code for Multiple Platforms Using Portable Libraries. NOTE: If you pass base URLs and relative URIs as hard-coded values, be mindful of the rules for utilizing the HttpClient API. The HttpClient.BaseAddress property should be set to an address with a trailing forward slash ( / ). For example, when passing hard-coded resource URIs to the HttpClient.GetAsync method, don't include a leading forward slash. To get a Product by ID: Set client.BaseAddress = new Uri("https://localhost:5001/"); Request a Product . For example, client.GetAsync
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