How to get submitted items' content during a DecisionPoint in a Subscriber ?

Question

Hi!
(If this is not the right msdn forum for my question, thx in advance to redirect me to the correct one ;)
I have to develop "server side event handlers" for TFS (kind of server-side "Check-in Policies" which may not be disabled/skipped by the developers and which do not require distribution/maintenance on thousands of workstations).
Concretely, I am going to implement Subscribers (inheriting from Microsoft.TeamFoundation.Framework.Server.ISubscriber)
In some of those Subscribers, I have to decide to accept or reject the "check-in" based on the submitted items' content. 
Concretely, it will result in something like the code bellow. My current issue is that I am only able to retrieve the server name of the submitted item, not its content. Do you know if there is a shelveset available with the submitted item, streams readable
server side, a list with the objects in the notification's argument, a "temporary" file in source control ? Or do I have to read the file in the developers' local workspace (I have indeed the workspace name and machine name) ?
I did debug my code server side (in TFS) but didn't find anything (obvious) in  notificationEventArgs' subtree :/
class ServerSidePolicy : ISubscriber
    public EventNotificationStatus ProcessEvent(TeamFoundationRequestContext requestContext,
                                        NotificationType notificationType,
                                        object notificationEventArgs,
                                        out int statusCode,
                                        out string statusMessage,
                                        out ExceptionPropertyCollection properties)
        EventNotificationStatus response = EventNotificationStatus.ActionApproved;
        properties = new ExceptionPropertyCollection();
        statusMessage = String.Empty;
        statusCode = 0;
        // If this is a Check-in notification
        if (notificationEventArgs is CheckinNotification)
            // If this is a Decision point
            if (notificationType == NotificationType.DecisionPoint)
                CheckinNotification args = notificationEventArgs as CheckinNotification;
                foreach (var submittedItem in args.SubmittedItems)
                    if (!MyValidate(submittedItem))
                        statusMessage = string.Format("{0} is not valid.", submittedItem);
                        response = EventNotificationStatus.ActionDenied;
                        properties.Set("Violated Rule", "Item's content not valid");
                        statusCode = -1;
                        break;
        return response;
    private bool MyValidate(string item)
Really, thx a lot of any info! I didn't find anything in the msdn either :(
PS.: Is there anyone who knows where I could find more information/documenation on the class {Microsoft.TeamFoundation.VersionControl.Server.PendingItemDbPagingManager}. This is the type of the SubmittedItems... I sounds like an object to access the
content of those SubmittedItems... However, I did explore it without any interesting finding.

Answer 1

Hello Valéry,
Thanks for your post.
Based on your description it seems that you would like to use TFS API to get the content of these checked in files programmatically.
You can use the following code to get all the pending changes in your workspace:
public
static void GetItem()
NetworkCredential cre =
new NetworkCredential("userName","password","domain");
TfsTeamProjectCollection tfs = new TfsTeamProjectCollection(new Uri("http://serverName:8080/tfs/CollectionName"), cre);
VersionControlServer versionControl =(VersionControlServer)tfs.GetService(typeof(VersionControlServer));
var workspace = vcs.GetWorkspace("WorkspaceName",
"WorkspaceOwner");
var changes=workspace.GetPendingChanges();
foreach (var change
in changes)
var item= vcs.GetItem(change.ServerItem);
Thanks.
Vicky Song [MSFT]
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