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EventHandler for OnPublishing shows "failed with HTTP status 401"

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Hello!

I am trying to create an EventHandler which is running while/before publishing a project to check certain values in the project plan (e.g. task names, start dates, end dates).

public class DurationEventHandler : ProjectEventReceiver
    {
        private const string PROJECT_SERVER_URI = "http://wegsfes19822:8080/ProjectServer/_vti_bin/PSI/";
        private const string PROJECT_WEBSERVICE = "project.asmx";

...

           Project.ProjectDataSet dsProject =
                new Project.ProjectDataSet();
            dsProject = project.ReadProject(e.ProjectGuid, Project.DataStoreEnum.WorkingStore);

...

          for (int t = 0; t < dsProject.Task.Count; t++)
            {
                Project.ProjectDataSet.TaskRow taskRow = dsProject.Task[t];

...

}

}

I have added the Project Web reference, but while publishing a plan, we are always receiving 3 error message.

Event Handler for event \ProjectPublishing\ of type \DurationEventHandler.DurationEventHandler\ threw an exception: The request failed with HTTP status 401: Unauthorized.

   at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)

   at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)

   at DurationEventHandler.Project.Project.ReadProject(Guid projectUid, DataStoreEnum dataStore)

   at DurationEventHandler.DurationEventHandler.OnPublishing(PSContextInfo contextInfo, ProjectPrePublishEventArgs e)

Soap error: Unspecified client error..

Soap error: Restoring data into SoapMapper GetWSSVServerURLResult failed.

What is going wrong? How can I check project plan details (tasks, assignments) during the save/publish of a project?

Many thanks for your help.

Joerg


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