How to remove ButtonChrome border (when defining the template of a border)?

Question

I followed ChrisF here and write a simple demo.

...open your project in Expression Blend, select the button and then right click and

Answer 1

An option is also to use an other library like telerik or xceed (also available for free commercial-use). In my solution I created a class an derived it from Xceed.Wpf.Toolkit.Chromes.ButtonChrome (the Microsoft ButtonChrome is sealed). In my ResourceDictionary I implemented an style for Combobox, created by Blend for VS. In the ControlTemplate for the ToggleButton I have implemented following code:

Here you can see only the most impertand stuf. Your DownArrowGeometry and so on, you know to do. I hope this can help someone ;-)