How to get base URL in Web API controller

Question

I know that I can use Url Link   to get URL of a specific route  but how can I get Web API base URL in Web API controller

User · Answer

Url Content         worked for me

User · Answer

From HttpRequestMessage  request Headers Host

User · Answer

You could use VirtualPathRoot property from HttpRequestContext  request GetRequestContext   VirtualPathRoot

User · Answer

Add a reference to System Web using System Web  Get the host or any other component of the url you want string host   HttpContext Current Request Url Host

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First you get full URL using  HttpContext Current Request Url ToString    then replace your method url using Replace  user login         Full code will be   string host   HttpContext Current Request Url ToString   Replace  user login

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In the action method of the request to the url   http   localhost 85458 api ctrl    var baseUrl   Request RequestUri GetLeftPart UriPartial Authority      this  will get you  http   localhost 85458

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Not sure if this is a Web API 2 addition  but RequestContext has a Url property which is a UrlHelper  HttpRequestContext Properties  It has Link and Content methods  Details here

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send a GET to a page and the content replied will be the answer Base url   http   website api

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Al WebApi 2  just calling HttpContext Current Request Path

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new Uri Request RequestUri  RequestContext VirtualPathRoot

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In ASP NET Core ApiController the Request property is only the message  But there is still Context Request where you can get expected info  Personally I use this extension method   public static string GetBaseUrl this HttpRequest request           SSL offloading     var scheme   request Host Host Contains  localhost     request Scheme    https       return    scheme     request Host  request PathBase

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I inject this service into my controllers    public class LinkFactory   ILinkFactory        private readonly HttpRequestMessage  requestMessage      private readonly string  virtualPathRoot        public LinkFactory HttpRequestMessage requestMessage                 requestMessage   requestMessage          var configuration    requestMessage Properties HttpPropertyKeys HttpConfigurationKey  as HttpConfiguration           virtualPathRoot   configuration VirtualPathRoot          if    virtualPathRoot EndsWith                              virtualPathRoot                              public Uri ResolveApplicationUri Uri relativeUri                 return new Uri new Uri new Uri  requestMessage RequestUri GetLeftPart UriPartial Authority     virtualPathRoot   relativeUri

User · Answer

Use the following snippet from the Url helper class  Url Link  DefaultApi   new   controller    Person   id   person Id      The full article is available here  http   blogs msdn com b roncain archive 2012 07 17 using-the-asp-net-web-api-urlhelper aspx  This is the official way which does not require any helper or workaround  If you look at this approach is like ASP NET MVC

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Base on Athadu s answer  I write an extenesion method  then in the Controller Class you can get root url by this RootUrl     public static class ControllerHelper       public static string RootUrl this ApiController controller                return controller Url Content

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This is what I use   Uri baseUri   new Uri Request RequestUri AbsoluteUri Replace Request RequestUri PathAndQuery  String Empty      Then when I combine it with another relative path  I use the following   string resourceRelative      images myImage jpg   Uri resourceFullPath   new Uri baseUri  VirtualPathUtility ToAbsolute resourceRelative

User · Answer

In  NET Core WebAPI  version 3 0 and above   var requestUrl     quot  Request Scheme     Request Host Value   quot

[url] How to get base URL in Web API controller?

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