Hello:

I'm working with Excel Addin to customize Ribbon and I have a few questions

First, i have my xml ribbon declaration and i have a button named "UpdateTC", what i need to do is: when user press this button i want to activate an specific excel sheet, how can i do this?

There are a couple of questions in here so here goes;

From what I can see, 1) - The Addin application you apply your ribbon xml to will fire and capture the callback event for the button being clicked, from here it is simply a matter of checking the button name (One of the eventargs) and then applying the code to activate the sheet. This.Workbooks(0).Activate

2) - This is a bit more confusing as there are a few ways you can handle this, you can create a delegate watching the change event and note changes at the time of change and update the usercontrol code, this is probably the easiest but I am not at my pc to do a couple of sample tests for you.

Regards