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POConnecting to Sharepoint 2010 via DOTCMIS : exception authentication provider
 

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  1. POConnecting to Sharepoint 2010 via DOTCMIS : exception authentication provider
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    <p>I am trying to connect to sharepoint 2010 using DOTCMIS in C#. In a very similar fashion to this question:</p> <p><a href="https://stackoverflow.com/questions/10941809/connecting-via-cmis-dotcmis-to-sp2010-exception-unauthorised">Connecting via CMIS (dotCMIS) to SP2010: exception unauthorised</a></p> <p>(However, my code is running in a MSCRM 2011 custom workflow activity)</p> <p>My code is:</p> <pre><code> var parameters = new Dictionary&lt;string, string&gt;(); parameters[SessionParameter.BindingType] = BindingType.AtomPub; parameters[SessionParameter.AtomPubUrl] = "http://mySPServer/sites/scans/_vti_bin/cmis/rest/MyRepositoryIDGUID?getRepositoryInfo"; parameters[SessionParameter.User] = "MyUser"; parameters[SessionParameter.Password] = "MyPassword"; parameters[SessionParameter.AuthenticationProviderClass] = "DotCMIS.Binding.NtlmAuthenticationProvider"; var sessionFactory = SessionFactory.NewInstance(); return sessionFactory.GetRepositories(parameters)[0].CreateSession(); </code></pre> <p><strong>However whenever I run it I am currently getting the following exception:</strong></p> <p>Sif General Error: DotCMIS.Exceptions.CmisRuntimeException: Could not load authentictaion provider: Value cannot be null. Parameter name: type ---> System.ArgumentNullException: Value cannot be null. Parameter name: type at System.Activator.CreateInstance(Type type, Boolean nonPublic) at DotCMIS.Binding.Impl.CmisBinding..ctor(IDictionary<code>2 sessionParameters, AbstractAuthenticationProvider authenticationProvider) --- End of inner exception stack trace --- at DotCMIS.Binding.Impl.CmisBinding..ctor(IDictionary</code>2 sessionParameters, AbstractAuthenticationProvider authenticationProvider) at DotCMIS.Client.Impl.CmisBindingHelper.CreateAtomPubBinding(IDictionary<code>2 parameters, AbstractAuthenticationProvider authenticationProvider) at DotCMIS.Client.Impl.SessionFactory.GetRepositories(IDictionary</code>2 parameters, IObjectFactory objectFactory, AbstractAuthenticationProvider authenticationProvider, ICache cache) at TPR.SIF.WorkflowActivity.SessionService.CreateNewSession(String dmWebServiceUrl, String userName, String password) at TPR.SIF.WorkflowActivity.SifService.SetUpServices(CodeActivityContext codeActivityContext) at TPR.SIF.WorkflowActivity.SifService.Execute(CodeActivityContext codeActivityContext)</p> <p>The error happens on the following line:</p> <pre><code> sessionFactory.GetRepositories(parameters)[0].CreateSession(); </code></pre> <p>which calls this line in the CMIS library </p> <pre><code> if (sessionParameters.TryGetValue(SessionParameter.AuthenticationProviderClass, out authenticationProviderClass)) { try { Type authProvType = Type.GetType(authenticationProviderClass); authenticationProvider = (AbstractAuthenticationProvider)Activator.CreateInstance(authProvType); </code></pre> <p>Does anyone know why <strong>"DotCMIS.Binding.NtlmAuthenticationProvider"</strong> cannot be created?</p> <p>Thanks very much.</p> <p>Sean.</p>
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