Nested XML to Excel or SQL Server Database

Hi all,

 

I'm very new to .NET and programming. Hopefully, someone can help.

 

I'm building a WPF MVVM project. I have a API Get, POST and PUT request. The response is in XML and I need to convert this XML to EXCEL. or store it in a Sql Server Database and then export it. 

 

I've tried multiple solutions but they don't get me through to ALL childNodes in the XML. Also, I need to convert the EXCEL back to XML and POST to the API. 

 

Here's a sample of the XML response. As you can see: a Goal Item contains a GoalTask, which contains a GoalTaskItem, which contains Description,StartDate and so on.