Cascading Dropdown in SharePoint List using Infopath Forms/ REST Cascading Drop Down Lists in SharePoint / Office 365 using REST http://www.markrackley.net/2014/05/20/cascading-drop-down-lists-in-sharepoint-office-365-using-rest/ #Read more from source and copied from http://www.sharepointdiary.com/2015/11/cascading-dropdown-using-infopath-forms-in-sharepoint-list.html#ixzz57m2lQArA Cascading Dropdown in SharePoint List using Infopath Forms What is Cascading drop downs? Well, Cascading drop downs are linked drop down controls where the content of the second drop down depends on the selection of the first one. E.g. When you Choose Country in the first drop down, the second drop down State is automatically filtered to the list of states actually in that county. Cascading drop downs are quite a common requirement and unfortunately, SharePoint doesn't support it Out of the box. In this article, I'm documenting the implementation of cascading drop down functi...