Debug Hints (also known as DataTips) are the most convenient way to view information about variables in the application during debugging. Debug Hints work only in break mode and only with variables that are within the current scope of execution and are not available for expressions that involve explicit method calls or function evaluation. To show Debug Hints, you have to shift focus into the Code Editor window and hover the mouse over the variable. After a short delay, the hint will appear.
If the variable contains a complex type, a plus sign (+) will be displayed preceding the variable name. With the mouse hovering over the plus sign (+), you can expand or collapse details about the variable.
Debug Hints can be used in many cases that require opening the Quick Watch debug window.