How to Add a ListItem?

Question

I am able to add an item to a list using the CAML below. Now I need to modify it to make sure I can add an attachment as well. What is the syntax to add an attachment?

<?xml version="1.0" encoding="UTF-8"?>
<Batch OnError="Continue">
    <Method ID="1" Cmd="New">
       <Field Name='Title'></Field>
       <Field Name="FirstName"></Field>
       <Field Name="LastName"></Field>
   </Method>
</Batch>

Answer 1

The SharePoint Object Model may be better suited for this task. Try looking at the code examples from MSDN about how to work with the Microsoft.SharePoint.SPListItem class.

http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.splistitem.aspx

Also, here are a few more code examples to check out:

http://nehasinha.wordpress.com/2008/05/23/programmticallyc-adding-deleting-copying-and-downloading-attachments-in-splist/

Answer 2

Apparently, to attach a file to an item is not possible. You have to get the _ows_ID value when creating the item, then use the AddAttachment method on the ID value of your item.

Please see the similar thread: http://stackoverflow.com/questions/4100157/add-attachment-with-updatelistitems.