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    <p>The <a href="http://msdn.microsoft.com/en-us/library/system.web.http.globalconfiguration%28v=vs.108%29.aspx" rel="nofollow">GlobalConfiguration</a> class can provide you access to the routing configuration.</p> <pre><code>// The code below assumes a map routing convention of api/{version}/{controller}/.... // This will give you the configured routes var routes = GlobalConfiguration.Configuration.Routes; // This will give you the route templates var templates = routes .Select(route =&gt; route.RouteTemplate); // This will give you the distinct versions for all controllers var versions = routes .Select(route =&gt; route.RouteTemplate) .Select(template =&gt; template.Split("/".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)) .Select(values =&gt; values[1]) .Distinct(); // This will give you the distinct versions for a controller with the specified name var name = "MyController"; var controllerVersions = routes .Select(route =&gt; route.RouteTemplate) .Select(template =&gt; template.Split("/".ToCharArray(), StringSplitOptions.RemoveEmptyEntries)) .Where(values =&gt; String.Equals(values[2], name, StringComparison.OrdinalIgnoreCase)) .Select(values =&gt; values[1]) .Distinct(); </code></pre> <p>I am not sure if you are trying to resolve the version with a known value (the name of the controller) or if you are trying to dynamically resolve it. If you inject the current HttpContext, you can use the request URI of the context to filter the routes via the route template.</p> <p><strong>Edit:</strong> After your comments I realized the routing configuration isn't what you were after.</p> <p>If the end goal is to implement logging within your controllers, you may want to take a look at <a href="http://www.asp.net/web-api/overview/testing-and-debugging/tracing-in-aspnet-web-api" rel="nofollow">Tracing in ASP.NET Web API</a> as there is support for tracing built-in to the Web API infrastructure.</p>
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    1. POWeb Api - Request Parameters Outside Controller
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    1. COThanks a lot for your answer, but (correct me if I'm wrong) I dont think this helps me to get the version for the current Request. I figured that my question might be a bit vague about this so I edited it.
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    2. COI think I misunderstood then. If you need the current request then injecting the HttpRequestMessage or HttpContext into the renderer makes the most sense; then you just have to parse the version out of the Request URI.
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    3. COAny thought about how I should inject the HttpRequestMessage or HttpContext after a Async call? Parsing the version from the request isn't the problem pnce I have it.
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