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Note that the data reader is positioned immediately before the first row prior to the first call to Read: ' Process the result set While readerRead() ConsoleWriteLine("{0} | {1}", _ reader("FirstName")ToString()PadLeft(10), _ reader(1)ToString()PadLeft(10)) End While You access each row s columns with the data reader s indexer (here, the SqlDataReader Item property), which is overloaded to accept either a column name or a zero-based integer index You use both so you can see the indexer s use, but using column numbers is more efficient than using column names Next you handle any exceptions, quite simplistically, but at least you re developing a good habit We ll cover exception handling much more thoroughly in 16 Catch e As Exception ConsoleWriteLine("Error: ", e) At last, in a finally block, you close the data reader and the connection by calling their Close methods.

This code block is followed by similar code that updates the PaymentsOnly list, the Generic.List(Of PaymentItem) that was passed in from the calling form. The code either updates the existing payment summary record, or adds a new record to the generic list.

It is not required that the name of the skin file corresponds to the type of control referenced in the file, but it does simplify site maintenance. In fact, it is not even necessary for each control to go into a separate skin file, so you could put them all into a single skin file.

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If you want to write programs using acceleration gestures, we suggest that you download the Accelerometer Graph program available from Apple s developer site. This is a nice, simple example of accelerometer use; but more important, it also provides you with a clear display of what the accelerometers report as you make different gestures.

As a general rule, you should close things in a finally block to be sure they get closed no matter what happens within the try block Finally ' Close reader and connection readerClose() connClose() End Try Technically, closing the connection also closes the data reader, but closing both (in the previous order) is another good habit A connection with an open data reader can t be used for any other purpose until the data reader has been closed..

First in First Out 359 flipping 42 VIP swap 42 flow diagram 350 folders bin 29 inc 29 Roles folder 34 forklift upgrades. See static upgrades FromConfigurationSetting method 173, 364 frontend offloading work 345 346 full trust 139, 141

You re probably wondering why the cascade style is called cascade="save-update" rather then merely cascade="save". Having just made all three categories persistent previously, suppose you make the following changes to the category hierarchy in a subsequent event, outside of a Session (you re working on detached objects again):

By the is-a relationship, photo, foodTag, and colorTag are all IComponent objects. Each of the tags (the decorators) is created with a Component, which might be a photo or an already tagged photo. The resulting object diagram is shown in Figure 2-3. As you can see, there are actually three separate photo objects in the system. How they interact is discussed in the upcoming Implementation section.

Browsers and browser-like applications are sometimes described as thin clients. Their only job is to send data, receive data, and format the results. They do not come with code describing how to play a game, read a patient s medical chart, or draw a map. They might seem to do all those things, but only because the content delivered to the client can do so. Thin clients can have many advantages over their thicker counterparts. Easy Updates: Assuming you have access to the web server, making changes is almost unbelievably easy. Whether you have one user or one million, everyone will see the change the next time their browser launches.

Queues have two ends. The producer end, where messages are put into the queue, is usually represented as the bottom. The other end is the consumer end, where a consumer will pull messages off of the top of the queue. Performance is critical to every part of Azure, and queues are no exception. Each queue, like the rest of the Azure storage services, exists as three instances, each of which is protected by different fault and update domains. This strategy protects your queue from completely failing when a switch goes down or a patch is rolled out.

A single client computer might open several simultaneous connections to the same service web browsers often do this in order to download the various pictures, CSS, and JavaScript files concurrently, so as to be able to display the web page sooner. To distinguish between them, each connection has a client-side port number as well as a server-side port. But while you need to know the server port in order to connect, the client port number is usually picked for you dynamically by the OS.

using using using using System; System.Collections.Generic; System.Linq; System.Text;

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