winforms – Where is the Tab Order Assignment dialog in Visual Studio 2012+? – via: Stack Overflow
Posted by jpluimers on 2016/01/27
Duh: same for VS2013
It is still available, you just need to add it back to the View menu. Tools + Customize, Commands tab, Menu bar = View. Select the menu item in Controls where you want to insert it, say the bottom one. Then Add Command, Category = View, Commands = Tab Order.