I recently came across the following scenario posted on the forums and I moved my response to this blog.
Scenario:
We have a SharePoint List which has three SharePoint LookUp Columns:
- Country: configured in SharePoint as a Single-Select SharePoint LookUp column.
- City: configured in SharePoint as a Multi-Select SharePoint LookUp column.
- Town: configured in SharePoint as a Multi-Select SharePoint LookUp column.
We want to add these fields into an EditForm control, and cascade each Combobox selection according to the levels ordered above.
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