Visual Studio Hacks

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Chapter 2, Master the Editor

#14 Refactor Your Code

HACK

return _isStarted;

}

set

{

_isStarted = value;

}

}

This function comes in handy even when you are not refactoring. When cre-

ating a class for the first time, you can create the private fields and then use

this function to create all of the necessary public properties.

Extract Interface

The Extract Interface function looks at your current class and creates an

interface based on its public methods and properties. For example, suppose

you want to create an interface for objects that can be “started”; this inter-

face would include a Boolean property, in this case

IsStarted, which, when

set, has the side effect of “starting” the object (some kind of vehicle or item

with an on/off switch). First, right-click on the class name and click the

Extract Interface menu item; this displays the Extract Interface dialog, which

is shown in Figure 2-36.

The default interface name is

IVehicle; change it to IStart and then select

the

IsStarted property. After you click OK, Visual Studio creates a new file

called IStart.cs with the following piece of code:

Figure 2-36. Extract Interface dialog