Using Instant Watch
While in break mode, you may want to check the current value of some variable or expression for which you have not defined a watch expression. Do this using the Instant Watch command.
To display an instant watch
1. Highlight an expression in either the Code window or the Immediate pane of the Debug window.
2. From the Debug menu, choose Instant Watch (Shift+F9), or use the toolbar shortcut:
The Instant Watch dialog box displays the current value of the expression you selected.
3. If you want to add a watch expression based on the expression in the Instant Watch dialog, click the Add Watch button.
Adding, Editing, and Deleting Watch Expressions
Setting and Clearing Breakpoints
Chapter 9, "Debugging"