I have a form that is using the form control "Repeating Section" I am trying to find a way to read this information in a workflow.
I would like to do calculations or just concatenate the entries into another field.
Any idea how I can achieve this?
The above article is good for learning how to parse the XML contained by a repeating section. If you want to have the data in a separate child list in SharePoint I suggest the TekDog controls. http://www.tekdoginc.com/nintex-form-controls
Repeating table data is stored as XML. Set the table to a multi-line plain text field, put in a loop, then use the query XML action to extract the values from the rows