Copying Multipl User Field from one SharePoint List to another

So once again I landed up in trouble because of the Person or Group field (Multiple Selection). Refer earlier post.

Now, this time what I needed to do is I simply needed to copy a Person or Group field with multiple selection enabled to another such column in another list, through an Event Receiver.
You might think - "Why is he writing an event receiver?? Why can't he just use a simple SPD Workflow??"

But as usual.......... there is a catch!!

I have created a SharePoint site with Forms Based Authentication (FBA). My users no longer come from the Active Directory, they come from an SQL Membership API database.
And.... SPD Workflows run under the OWSTIMER.EXE service not the w3wp.exe service.

(For general information the w3wp service is created by the IIS and is used to handle web requests coming to a web server. The OWSTIMER service is created by the Windows SharePoint Timer Service and is used to execute scheduled jobs of SharePoint.)
So, since the SPD Workflows run under a different service, they cannot read the web.config placed under the IIS Service, therefore, they cannot read the Membership API database settings, therefore, SPD Workflows cannot identify FBA users.

So, I write a little bit of code to perform the task at hand i.e. copying multiple users from one column to another (using event receiver).
But again..... things are not as simple as you think. I write this line of code:

oDestinationList["MultiUser"] = oSourceList["MultiUser"];
here

• DestinationList is Destination List object
• SourceList is Source List object, and
• MultiUser is the name of the field

but this simple line of code doesnt work. It states that the source and destination objects are not of the same type and cannot copy code!!!! Why????? I have no clue!

On googling I found a long procedure for copying multiple user fields: Create a SPFieldUserValueCollection object and append user names in this object etc.etc..... thats too much work...

So, on doing a little bit of research I found that there IS a simpler way of achieving this. Here's the code:

oDestinationList["MultiUser"] = Convert.ToString(oSourceList["MultiUser"]);

and it worked!!!! Hurray!!!!

Really SharePoint is funny!! :)

Huzefa Mala.

Send E-Mails to SharePoint Multiple User Field SPD Workflow

I faced a recent problem whilst designing declarative workflows in SPD 2007:
It sounds pretty simple - I needed to send mails using the Workflow to users who were stored in a Person or Group field.
You might think - "What's the big deal in that??".... But here's the catch. The Person or Group field I am referring to allowed multiple user selection.
==Bam==
All hell broke loose. How was this possible??? The Person or Group field just doesn't show up in the Workflow lookup! What do I do? Will I need to write an event receiver? Ohh!!! I didn't want to write code here? It seemed so simple. But wait..... lets try to fool SharePoint.
OK so first I do not allow multiple user selection in my Person or Group field. (You might think what about the already existing records? Data loss! Ya I know.... you might have to do this the hard way - Create a template for your list including content, recreate your list using the template you just created and after finishing all the steps mentioned here add all the entries again..... I told you this was the hard way!)
OK continuing with fooling sharepoint...... now, on preventing multiple user entries my Person or Group field starts appearing in the Workflow lookup for sending mails.
I complete my workflow steps, go back to my list and again allow multiple user selection in my Person or Grop field.
Now lets check whether the workflow is giving any errors.....
No......... no errors! Congratulations! SharePoint has been fooled! (Now can re enter your entries as I had mentioned above)
Happy SharePointing! :)