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Are you using Visual Basic or C#? The sample is in C# - and if you don't have a language preference, you'll have an easier time finding C# samples....
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Baffling. So the data exists in the list, but it doesn't show in the form? And the list data is from a secondary data connection to the form?
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Maybe set the postback to always on the item number dropdown? Right click the dropdown and under the properties, look under the Browser tab. Try changing postback to always and see if that makes a difference.
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Can you attach a screenshot that shows it not working? Did you preview with the form I attached?
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Works for me, see attached. I had to put the Item Number field on the form as a text box so I could test - but if I add rows and enter the word Other in any of the Item Number fields, the section displays. Is the actual text "Other" with a capital O?
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I think you just need to select "all occurrences" for the field.
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You'll need to use a double eval. http://sp2010mj.blogspot.com/2013/06/double-eval-retrive-from-repeating.html has info - you can also search the forum for double eval. :)
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May I see your form? You can attach it under the Options tab in a reply.
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You'd probably need to add some rows by default - I'm having trouble understanding this post, but if you are using this technique to effectively "copy" a repeating table to the main data source, open the Data tab on the ribbon and select default values. Then add as many rows as you think you'll need to your repeating group. ...
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Yes, I understand that it was working - however, SharePoint online can change without warning due to updates. Hiding a section worked in my SharePoint online tenant - you may want to open a support ticket with Microsoft on this one. I'd probably set up a simple form where you can reproduce the issue - then you can send them that (something ...