Simple DotNetNuke Module

I want to have a c# module for DNN9 who simply put text the user click and at the end send me all the response by email. The structure of the text question must be in an sql database so it's easy to change it Example databse ID - Name - ParentId 1 - Test1 - 0 2 - Test2 - 0 3 - Test3 - 1 4 - Test 4 - 1 5 - Test 5 - 2 With that first the module show Test1 and Test2 then if we click on test1 it show Test3 and Test4 or if we click on Test2 it show Test5 At the end he send by email all the text clicked (Test1 then Test3 etc)