How to get the ribbon control?

I created an addin project for the Visio. I used visual designer at first, there is no any problem with it.
The problem is when I export it to the XML file. I don't know how to get the Ribbon Controls (Microsoft.Office.Core.IRibbonControl).
For example: In the initial loading stage, I want to fill the combo box. Also, when one combo box index changed, in the call back function I want get another control such as textbox and do some changes.
The reason I export it to the XML file is the visual designer doesn't support the backstage view so I have manually create it in the XML.
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visibledataAuthor Commented:
Sorry, I through all the links you posted. There are nothing related to my problem.
for xml, call back function is different.

private void button1_OnAction(Microsoft.Office.Core.IRibbonControl sender)

visual designer:
private void button1_OnAction(object sender, ControlEventArgs e)

My problem is how can get other controls when I am using xml
For example: (In visual designer)
private void button1_OnAction(object sender, ControlEventArgs e)
      // I changed the button2 control property when button one is fired. Just don't know how to do this when I am using xml not the visual designer.
Scott HelmersVisio Consultant, Trainer, Author, and DeveloperCommented:
This article is solving a different problem but perhaps the C# and C++ code it contains will be relevant:

I found that link in this thread, which may also give you some ideas:



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