Using Workflow Object Model in SharePoint.

I was assigned a task to create a simple aspx page where the user could see all the all the different documents, workflows running against them, workflows task information as well as workflow history.

Here we can make use of SPWorkflow and SPWorkflowTask class.

The page would be displaying the information in the following manner

Workflow status for following document :- SampleDocument2
Workflow name :- Approval Workflow
Workflow Task Title
First Team Task
Workflow History Description
The approval workflow has started waiting for First and Second Team to respond

The sample code for getting the above information

protected void Page_Load(object sender, EventArgs e)

{

//SPWorkflowManager myWFMgr = new SPWorkflowManager();

SPSite objSite = new SPSite(“http://servername:port”);

SPWeb objWeb = objSite.OpenWeb();

SPList myList = objWeb.Lists[“ListName”];

// for each document within the Library

foreach (SPListItem myListItem in myList.Items)

{

Response.Write(“<b>Workflow status for following document :-</b>” + myListItem[“Title”].ToString());

Response.Write(“</br>”);

// Get the workflows associated

foreach (SPWorkflow myWF in myListItem.Workflows)

{

// Get the name of the workflow

Response.Write(“Workflow name :- “+ myWF.ParentAssociation.Name);

Response.Write(“</br>”);

Response.Write(“<b>Workflow Task Title </b>”);

Response.Write(“</br>”);

// for each workflow running get the workflow tasks and history information

foreach (SPWorkflowTask myWFTask in myWF.Tasks)

{

Response.Write(myWFTask[“Title”].ToString());

Response.Write(“</br>”);

}

// for each workflow running get the history information

Response.Write(“<b>Workflow History Description</b> “);

Response.Write(“</br>”);

SPList myList1 = objWeb.Lists[“Workflow History”];

SPQuery query = new SPQuery();

query.Query = “<OrderBy><FieldRef Name=”ID”/></OrderBy>” +

“<Where><Eq><FieldRef Name=”WorkflowInstance”/>” +

“<Value Type=”Text”>{“ + myWF.InstanceId.ToString() + “}</Value>” +

“</Eq></Where>”;

SPListItemCollection historyListItems = myList1.GetItems(query);

foreach (SPListItem i in historyListItems)

{

Response.Write( i[“Description”].ToString());

Response.Write(“</br>”);

}

}

Response.Write(“</br>”);

}

}

That’s it …