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CHAPTER 1 VISUAL STUDIO 2010
FIGURE 1 - 44
Within the rule set you see that there is a set of categories, each of which contains one or more rules. When
expanded, next to each category and rule is a check box to indicate if that particular rule will be checked.
By default, Visual Studio issue warnings if your code fails to meet the requirements associated with a rule.
However, you can change the default — for example, by selecting an error status if a given rule fails. This
enables you to have some rule violations act as compilation errors instead of warnings. Outside the scope of
this chapter is the capability to actually identify within your source code those items that may be fl agged by
the code analyzer but that are valid exceptions to the rule being checked.
Performance Tools
Every developer wants performance checks. Visual Studio provides dynamic code analysis , or performance ,
tools for your application. These tools are available from the Analyze menu, shown in Figure 1 - 45. Selecting
the Performance Explorer from the menu shown in Figure 1 - 45 opens the window shown on the left side
of the display in Figure 1 - 45. This window has a small bar and provides access to details and results of
your performance testing.
A good way to get started with the performance tools is to select the fi rst item from the Analyze menu, the
Performance Wizard, shown in Figure 1 - 46. The performance tools provide four runtime environments to
measure the performance of your application: CPU Sampling, Instrumentation, .NET Memory Allocation
(Sampling), and Concurrency.
Sampling for performance testing is a non - intrusive method of checking your application performance.
Essentially, Visual Studio starts your application normally, but behind the scenes it is interfaced into the
system performance counters. As your application runs, the performance monitoring engine captures system
performance, and when your application completes it provides reports describing that performance. Details
about what your application was actually doing to cause a behavior isn ’ t available, but you can get a realistic
idea of the impact on the system.
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