Workflow - Example to Update Form Data

Layne Anderson

I'm having trouble with a simple function in c# to update a workflow's form field.  Below is the syntax I used that is hacked from the thread located here. 

It looks like I'm not getting any form data back from the work package, and my "foreach" statement is crashing out since fdList is empty, but the error I'm getting is "Object reference not set to an instance of an object." (error attached). I'm not familar with the syntax and was just wondering what I was doing wrong? 

public static void updateWFForm(OTAuthentication otAuth, ProcessInstance ProcessInt)
        {
            WorkflowServiceClient wfsc = new WorkflowServiceClient();
            ApplicationData[] wfData;
            wfData = wfsc.GetWorkItemData(ref otAuth, ProcessInt.ProcessID, ProcessInt.ProcessID, 1);

            FormData wfFormData = new FormData();
            wfFormData = ((FormData)(wfData[3]));
            FormDataInstance[] fdList = wfFormData.Forms;

            foreach (FormDataInstance f in fdList)
            {
                AttributeGroupDefinition agd = new AttributeGroupDefinition();
                agd = f.Data;

                for (int i = 0; i <= agd.Attributes.Length; i++)
                {
                    if (agd.Attributes[i].Type == "String")
                    {
                        StringAttribute sAttr = (StringAttribute)agd.Attributes[i];
                        if (sAttr.Values != null)
                        {
                            Console.WriteLine("Attribute: " + sAttr.Values[0]);
                        }
                        sAttr.Values[0] = "Test Engagement";   //Error here as value is null.
                    }
                    Console.WriteLine("Attributes:");
                    Console.WriteLine(agd.Attributes[i].DisplayName + " - " + agd.Attributes[i].GetType());
                }
                return;
            }
        }

 

 

 

 

 

 

appuGmail

Something tells me you should be getting 4 for formdata or better still before using the  3 in that picture get that data structure put a watch or debug on it and see if it goes 0,1.2,3 I think 1 is attachments 2 is comments 3 is Wf Attribute data 4 is form data

Not in front of a debugger so excuse the rapid answer

Ciao, Appu

On Dec 4, 2018, at 2:07 PM, eLink Entry: Content Web Services Forum <otdncontentwebservices971forum@elinkkc.opentext.com> wrote:

eLink : Workflow - Example to Update Form Data

Workflow - Example to Update Form Data

Posted bylayne.anderson@dvn.com (Anderson, Layne)On 12/04/2018 03:03 PM

I'm having trouble with a simple function in c# to update a workflow's form field.  Below is the syntax I used that is hacked from the thread located here. It looks like I'm not getting any form data back from the work package, and my "foreach" statement is crashing out since fdList is empty, but the error I'm getting is "Object reference not set to an instance of an object." (error attached). I'm not familar with the syntax and was just wondering what I was doing wrong? public static void updateWFForm(OTAuthentication otAuth, ProcessInstance ProcessInt)         {             WorkflowServiceClient wfsc = new WorkflowServiceClient();             ApplicationData[] wfData;             wfData = wfsc.GetWorkItemData(ref otAuth, ProcessInt.ProcessID, ProcessInt.ProcessID, 1);

            FormData wfFormData = new FormData();
            wfFormData = ((FormData)(wfData[3]));
            FormDataInstance[] fdList = wfFormData.Forms;

            foreach (FormDataInstance f in fdList)
            {
                AttributeGroupDefinition agd = new AttributeGroupDefinition();
                agd = f.Data;

                for (int i = 0; i <= agd.Attributes.Length; i++)
                {
                    if (agd.Attributes[i].Type == "String")
                    {
                        StringAttribute sAttr = (StringAttribute)agd.Attributes[i];
                        if (sAttr.Values != null)
                        {
                            Console.WriteLine("Attribute: " + sAttr.Values[0]);
                        }
                        sAttr.Values[0] = "Test Engagement";   //Error here as value is null.
                    }
                    Console.WriteLine("Attributes:");
                    Console.WriteLine(agd.Attributes[i].DisplayName + " - " + agd.Attributes[i].GetType());
                }
                return;
            }
        }

 

 

 

 

 

 

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