Hey Guys,
for those guys who like to speed up things.
If you want create a function from existing code you can simply use in Visual Studio the ‘Quick Actions and Refactoring’ function (Ctrl + .). You may know it from including automaticly namespaces or headers.
If you mark your Text and then Right-Click (Ctrl + .) then you choose ‘Quick Actions and Refactoring’, then choose Extract Function and give the marked text you want to extract a function name.
Here are some pictures:
https://picload.org/image/rpadarwa/function.jpg
https://picload.org/image/rpadarwl/menu.jpg
https://picload.org/image/rpadarwi/find.jpg
Result:
https://picload.org/image/rpadaari/4.jpg
This function is may in developement, but worked all the time for me perfect.
Pretty cool right? 
Cheers