Setting the TabIndex property of many form controls in Visual Studio?
While in Designer mode, select Tab Order from the View menu then click on each control in the order you want. Then remember to turn off Tab Order when you're finished, otherwise when you select a control to do something else you lose the work you've just done (I wish Tab Order would turn off when you Save..)
Bring up the Form in design mode.
Click the View Menu -> Tab Order
Then a little number will show up on each form representing its tab order. Now click each item in order that you want their tab order set.
To bring up the tab order in VS2012 while in Design View Click on the actual form then goto VIEW / TAB ORDER then this will enable the tab order window.
once you have finished changing the tab order go back to VIEW / TAB ORDER this will deactivate the tab order layout