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having to manually step through your code. Stepping through the code is sometimes necessary, but when dealing with large enterprise applications, it s simply not feasible in many instances. It s next to impossible to step through 500,000 lines of code in a short amount of time. One of the best tools to help you do this in a time-efficient manner is the Assert method. You should load your code with Debug.Assert methods wherever you have a condition that will always be true or false. When the code evaluates, if the condition isn t true, it will break into the debugger automatically. The main benefit to this approach is that you can verify that conditions you thought were true really are true. Often developers will check code into source control for a project, which ends up breaking other code. When you use Assert statements correctly, simply running the application will produce immediate notification of a problem. Suppose that you used an IConfigurationSectionHandler object and someone deleted the entry in the configuration file. Without a Debug assertion, you might spend 20 minutes trying to track down the object before realizing that someone deleted it. An Assert statement could point you directly to the problem. Moreover, you can use highly detailed messages, which make finding the problem much quicker. Furthermore, when you build your application in Release mode, none of the Debug commands such as Assert statements are compiled in, so your application suffers no performance degradation by using them. This scenario gives you the best of both worlds: more efficient debugging with no negative impact on performance. Assume you had the following configuration file, but somehow each of the settings was deleted:
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Lesson Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
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Description Closes the stream and releases any resources associated with it. (Inherited from the Stream class.) Clears any buffers within the stream and forces changes to be written to the underlying system or device. (Inherited from the Stream class.) Prevents other processes from changing all or part of the file. Performs a sequential read of a specified number of bytes from the current position and updates the position to the end of the read upon completion of the operation. (Inherited from the Stream class.) Performs the read of a single byte and updates the position by moving it by one. Identical to calling Read to read a single byte. (Inherited from the Stream class.) Sets the position within the stream. (Inherited from the Stream class.) Specifies the length of the stream. Will truncate the stream if the new length is less than the old length and will expand the stream if the reverse is true. (Inherited from the Stream class.) Allows other processes to change all or part of the underlying file. Writes information to the stream as a number of bytes and updates the current position to reflect the new write position. (Inherited from the Stream class.) Writes a single byte to the stream and updates the position. Identical to calling Write with a single byte. (Inherited from the Stream class.)
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The following questions are intended to reinforce key information presented in this lesson. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter. 1. You are installing a new 200-GB disk drive. You want to divide the disk into five logical volumes for the operating system, applications, user home directories, shared data, and a software distribution point. The drive space should be distributed equally among the five logical volumes. You also want to leave 50 GB as unallocated space for future extension of a logical volume. Considering basic and dynamic disks and the types of logical volumes they support, what are your configuration options
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Employee Sandberg, Mikael Meisner, Linda Miller, Ben Hill, Annette Pellow, Frank Ogisu, Fukiko Hee, Gordon Hillmann, Reinout Kurjan, Eric Hagens, Erin Rao, Arvind Word, Sheela
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If AutoRun is disabled on your machine, refer to the Readme.txt file on the CD-ROM.
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Some controls expose their most common tasks through smart tags. When present, smart tags appear as small boxes in the upper right-hand corner of the control, as shown in Figure 2-10.
You select a conflict resolution policy when you create a publication that uses queued updating. The conflict resolution policy determines how the Queue Reader Agent treats different versions of the same row during the synchronization process. There
Resource View The Resource Overview window is the Windows Reliability and Performance Monitor home page, as shown in Figure 11-21. This view lets you monitor the usage and performance of CPU, disk, network, and memory resources in real time. You can get information about which processes are using which resources by clicking the down-arrow beside each resource.
Q3 A3 DNS resolver cache Web browser URL: www.microsoft.com Q1 A1 Q2 A2 DNS server Q4 A4 HOSTS file
NOTE
You are in the process of building your Active Directory and have some user data from the Human Resources department that includes first and last name, address, and telephone
Description The password is included and the SHA-1 algorithm is used to hash it. To use this value, you must provide a class that inher its from the UsernameTokenManager class, which automati cally calls an overridden AuthenticateToken method to handle authentication. The password is not included in the transmission of the mes sage; however, it is used to sign the message and must be pro vided to allow the message to be decrypted. The password is sent in plain text. This option can be useful, but because it is transmitted in plain text, it has limited appli cability. It is only suitable for scenarios where a certificate is used to encrypt the UsernameToken value, or if the transport channel has been secured using Secure Sockets Layer (SSL).
Naming Guidelines
To display an image that is saved to the disk in a form, load it with Image.FromFile and create a PictureBox control, and then use the Image to define PictureBox.BackgroundImage. The following sample code (which requires a form with an instance of PictureBox named pictureBox1) demonstrates this process:
Estimated lesson time: 5 minutes
Lesson 1: Understanding the Windows 7 Deployment Process
This chapter focuses on the ways you can configure and publish your Extensible Markup Language (XML) Web services. We begin by reviewing the different ways you can manage state in your Web service. This state management can involve the use of one of three methods: Application objects, Session objects, or client-side cookies. Les son 2 focuses on the ways you can configure your Web service using XML-based con figuration files. Configuration options can be applied to one Web service or all Web services for a particular machine. Lesson 3 concludes with how you can deploy your Web service to a remote Web server and then use static (.disco) or dynamic discovery files to publish information about your Web services.
fakeEvidence.AddHost(new Url( http://www.microsoft.com/assembly.exe ));
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