How to Get the created Request Activity Status using SCSM 2012 SDK

Question

Hi, i have created a ServiceRequest,
so there are Activities related to Servicerequest.
I am trying to know the Status of the each Activity (Completed,Failed etc)
and the Change of Activity (like from ReviewActivity to RunBookActivity).
how can we get the Activity status change programmatically.
so that i could Display this Status to other Portal, 
I am Creating a CustomActivity with ActivityID as Parameter to Workflow inheriting WorkflowActivityBase
protected
override
ActivityExecutionStatus Execute(ActivityExecutionContext
executionContext)
Is this a Right Approach..???
Plz respond as m not getting the way ..

Answer 1

I'm not entirely clear on what you're trying to accomplish, but I can give you some guidance on getting the status of activities that are part of a service request.
Quick overview before we get to the code: After we connect to the database we want to retrieve some management packs, a relationship, and a type projection. We then want to create some criteria for querying the Service Manager database. Then we execute the
query and traverse the results, displaying the activity ID and it's status.
//Connect to Service Manager
EnterpriseManagementGroup emg = new EnterpriseManagementGroup("<your management server>");
//Get some management packs
ManagementPack mpSystem = emg.ManagementPacks.GetManagementPack(SystemManagementPack.System);
ManagementPack mpSRLib = emg.ManagementPacks.GetManagementPack("ServiceManager.ServiceRequest.Library", mpSystem.KeyToken, new Version("7.5.1464.0"));
ManagementPack mpWorkItemLibrary = emg.ManagementPacks.GetManagementPack("System.WorkItem.Library", mpSystem.KeyToken, new Version("7.5.1464.0"));
ManagementPack mpActivityLib = emg.ManagementPacks.GetManagementPack("System.WorkItem.Activity.Library",mpSystem.KeyToken,new Version("7.5.1464.0"));
//Get the relationship and type projection we'll be using for this query
ManagementPackRelationship mprWIContainsActivity = mpActivityLib.GetRelationship("System.WorkItemContainsActivity");
ManagementPackTypeProjection mptpWIActivities = mpSRLib.GetTypeProjection("System.WorkItem.ServiceRequestAndActivityViewProjection");
//This is the work item (such as a service request) ID that we're looking for
String WorkItemID = "SR123";
//Setup the criteria. This will instruct service manager to "Get me the service request with ID SR123"
String strWICriteria = String.Format(@"
<Criteria xmlns=""http://Microsoft.EnterpriseManagement.Core.Criteria/"">
<Reference Id=""System.WorkItem.Library"" PublicKeyToken=""{0}"" Version=""{1}"" Alias=""WILib"" />
<Expression>
<SimpleExpression>
<ValueExpressionLeft>
<Property>$Target/Property[Type='WILib!System.WorkItem']/Id$</Property>
</ValueExpressionLeft>
<Operator>Equal</Operator>
<ValueExpressionRight>
<Value>" + WorkItemID + @"</Value>
</ValueExpressionRight>
</SimpleExpression>
</Expression>
</Criteria>
", mpWorkItemLibrary.KeyToken, mpWorkItemLibrary.Version.ToString());
//Build the projection criteria
ObjectProjectionCriteria opcWI = new ObjectProjectionCriteria(strWICriteria, mptpWIActivities,emg);
//Perform the query
IObjectProjectionReader<EnterpriseManagementObject> oprWIs = emg.EntityObjects.GetObjectProjectionReader<EnterpriseManagementObject>(opcWI,ObjectQueryOptions.Default);
//oprWIs contains all of the work items with ID "SR123" (and there will only be one work item with that ID)
//We loop through all the work items in the oprWIs collection
foreach (EnterpriseManagementObjectProjection emopWI in oprWIs)
//Next we loop through all of the activities contained by our work item, using the WorkItemContainsActivity relationship
//NOTE that these activities are in no particular order. You'll have to use the icpActivity.Object[null,"SequenceId"].Value to order them
foreach (IComposableProjection icpActivity in emopWI[mprWIContainsActivity.Target])
//Since activity status is an enumeration, we want to display it's displayname, not it's value (enumeration values are just GUIDs or other unique identifiers)
ManagementPackEnumeration status = (ManagementPackEnumeration)icpActivity.Object[null, "Status"].Value;
//For this little snippet, we're just outputting the activity ID and it's status
Console.WriteLine(icpActivity.Object[null,"Id"].Value + " " + status.DisplayName);
Regarding the rest of your post, I'm not sure what you meant when you said you wanted the "change of activity". Are you trying to display the time that an activity's status changed (stored in the activity's history records)?
Second, if you're displaying this information on some other custom portal, what is the purpose for the workflow?
A couple disclaimers: Use this code at your own risk, there are no guarantees, etc etc :) Second, I'm assuming you're on Service Manager 2012 RC at least (otherwise the "versions" in the code will need to be changed)
Are you new to the SCSM SDK? If so, this code snippet might seem overwhelming. I recommend reading the Service Manager blog to get an idea about how classes, objects, relationships, type projections, etc all work.
Here's a link to a post by Travis that uses the SDK..he also references a lot of the information necessary to best understand Service Manager's inner workings :)
http://blogs.technet.com/b/servicemanager/archive/2010/10/04/using-the-sdk-to-create-and-edit-objects-and-relationships-using-type-projections.aspx