harsimranb harsimranb - 1 month ago 20
C# Question

Programatically Approve/Reject workflows and add comments

I'm trying to programatically approve/reject workflows in SharePoint. I can successfully do this, but I cannot add comments. I got my code from a year old question, which hasn't been answered either, so I thought I'd start a new question.

My code:

Hashtable ht = new Hashtable();
ht[SPBuiltInFieldId.Completed] = "TRUE";
ht["Completed"] = "TRUE";
ht[SPBuiltInFieldId.PercentComplete] = 1.0f;
ht["PercentComplete"] = 1.0f;
ht["Status"] = "Completed";
ht[SPBuiltInFieldId.TaskStatus] = SPResource.GetString
(new CultureInfo((int)task.Web.Language, false),
Strings.WorkflowStatusCompleted, new object[0]);
if (param == "Approved")
{
ht[SPBuiltInFieldId.WorkflowOutcome] = "Approved";
ht["TaskStatus"] = "Approved";
if (!string.IsNullOrEmpty(comments))
{
ht[SPBuiltInFieldId.Comments] = comments;
ht["Comments"] = comments;
ht[SPBuiltInFieldId.Comment] = comments;
}
}
else
{

ht[SPBuiltInFieldId.WorkflowOutcome] = "Rejected";
ht["TaskStatus"] = "Rejected";
if (!string.IsNullOrEmpty(comments))
{
ht[SPBuiltInFieldId.Comments] = comments;
ht["Comments"] = comments;
ht[SPBuiltInFieldId.Comment] = comments;
}
}
ht["FormData"] = SPWorkflowStatus.Completed;
bool isApproveReject = AlterTask(task, ht, true, 5, 100);

private static bool AlterTask(SPListItem task, Hashtable htData, bool fSynchronous, int attempts, int millisecondsTimeout)
{
if ((int)task[SPBuiltInFieldId.WorkflowVersion] != 1)
{
SPList parentList = task.ParentList.ParentWeb.Lists[new Guid(task[SPBuiltInFieldId.WorkflowListId].ToString())];
SPListItem parentItem = parentList.Items.GetItemById((int)task[SPBuiltInFieldId.WorkflowItemId]);
for (int i = 0; i < attempts; i++)
{
SPWorkflow workflow = parentItem.Workflows[new Guid(task[SPBuiltInFieldId.WorkflowInstanceID].ToString())];
if (!workflow.IsLocked)
{
task[SPBuiltInFieldId.WorkflowVersion] = 1;
task.SystemUpdate();
break;
}
if (i != attempts - 1)
Thread.Sleep(millisecondsTimeout);
}
}
return SPWorkflowTask.AlterTask(task, htData, fSynchronous);
}

Answer

To add a comment to a task when you Approve/Reject it, you just need to use the line before AlterTask:

ht["ows_FieldName_Comments"] = comments;

After the task is approved you can see the comments in the Workflow History List.

You can also get all the consolidated comments from a task with:

Hashtable extProperties = SPWorkflowTask.GetExtendedPropertiesAsHashtable(currentTask);

string consolidatedComments = extProperties["FieldName_ConsolidatedComments"].ToString();