Stephens' C# Programming with Visual Studio® 2010 24-Hour Trainer

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LESSON 12 Debugging CoDe

FIGURE 125

USING THE IMMEDIATE WINDOW

While the program is stopped, the Immediate window lets you execute simple commands. The four

most useful commands that this window supports let you view variable values, evaluate expressions,

set variable values, and call methods.

If you can’t find the Immediate window, open the Debug menu, expand the

Windows submenu, and select Immediate.

To view a variable’s value, simply type the variable’s name and press [Enter]. (Optionally you can

type a question mark in front if it makes you feel more like you’re asking a question.)

The following text shows the Immediate window after I typed in the name of the variable

subtotal (actually I typed “sub” and pressed [Ctrl]+[Space] to let IntelliSense help me type

the rest) and pressed [Enter]:

subtotal

19.95

To evaluate an expression, simply type in the expression and press [Enter]. You can include literal

values, variables, properties, constants, and just about anything else that you can normally include

inside an expression in the code.

The following text shows the Immediate window after I typed an expression and pressed [Enter]:

taxRate * subtotal

179.55

596906c12.indd 156 4/7/10 12:32:42 PM

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To set a variable’s value, simply type the variable’s name, an equals sign