TFS & Visual Studio ALM – by Neno Loje

The Problem You are receiving one of the following compiler errors: The type ‘Microsoft.TeamFoundation.Framework.Client.ILocationService’ cannot be used as type parameter ‘TService’ in the generic type or method ‘VssRequestContextExtensions.GetService<TService>(IVssRequestContext)’. There is no implicit reference conversion from ‘Microsoft.TeamFoundation.Framework.Client.ILocationService’ to ‘Microsoft.TeamFoundation.Framework.Server.IVssFrameworkService’. ‘ILocationService’ does not contain a definition for ‘GetSelfReferenceUri’ and no extension method ‘GetSelfReferenceUri’ accepting a first argument […]

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Answer: If you are already authenticated against the “classic” TFS Object Model from the Microsoft.TeamFoundationServer.ExtendedClient NuGet Package  (typically having an instance of TfsTeamProjectCollection), you can use its GetClient<T> generic method to aquire an *HttpClient class from the REST API. Example: TfsTeamProjectCollection tpc = new TfsTeamProjectCollection(new Uri(collectionUri))) TfvcHttpClient tfvcClient = tpc.GetClient<TfvcHttpClient>(); See also “Example 3” at: […]

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