Action Edit Tool

I do not understand how to use the Action Edit Tool in the Designer.Could someone tells me????
Thank you very much…

How to use Designer to bind data???

I want to develop a small project now.But I find some difficulties in using the Designer.For example,I do not understand how to bind data clearly.Could someone helps me?...Thank you very much.

Error

I made a project for multi schema. But once I save and open, can not open and always error. I have many times experienced the same error. Please explanation.