Finding extension methods in C# 3.5 is not as intuitive as it should be. Just walking the inheritance chain will not show you all the goodies. There are a few steps using object browser that will make this easier.
- Pull up object browser, set Browse to only show 3.5. (Will not work if you set to all components)
- Set the filter to ‘Show Extension Members’
- Select a type in the browser
- In the right pane you will see an ‘Extension Members’ folder
- Now you can browse the public type extensions
