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the first. This animation leaves out the From property, which allows it to seamlessly rotate the button from its current angle to its original orientation in a snappy 0.2 seconds: <Storyboard x:Name="unrotateStoryboard"> <DoubleAnimation Storyboard.TargetName="rotateTransform" Storyboard.TargetProperty="Angle" To="0" Duration="0:0:0.2"></DoubleAnimation> </Storyboard> Here s the event handler: private void cmd_MouseLeave(object sender, MouseEventArgs e) { unrotateStoryboard.Begin(); } With a little more work, you can make these two animations and the two event handlers work for a whole stack of rotatable buttons, as shown in Figure 10-7. The trick is to handle the events of all the buttons with the same code, and dynamically assign the target of the storyboard to the current button using the Storyboard.SetTarget() method: private void cmd_MouseEnter(object sender, MouseEventArgs e) { rotateStoryboard.Stop(); Storyboard.SetTarget(rotateStoryboard, ((Button)sender).RenderTransform); rotateStoryboard.Begin(); } private void cmd_MouseLeave(object sender, MouseEventArgs e) { unrotateStoryboard.Stop(); Storyboard.SetTarget(unrotateStoryboard, ((Button)sender).RenderTransform); unrotateStoryboard.Begin(); } This approach has two limitations. First, because the code reuses the same storyboards for all the buttons, there s no way to have two buttons rotating at once. For example, if you quickly slide the mouse over several buttons, the buttons you leave first may not rotate all the way back to their initial position, because the storyboard is commandeered by another button. If this behavior is a problem, you can code around it by creating the storyboards you need dynamically in code. You ll see how to implement this technique later in this chapter, when you consider the bomb game.

ne of the biggest responsibilities you have as a DBA is proactively making sure that all the servers in your environment are running smoothly. You should not wait for a user to call and complain about slow response times before rebuilding indexes or updating statistics. Also, if you encounter an issue, such as a torn page in a database, it is better to find out sooner than later. If an issue goes undetected long enough, you may not have the backups needed in order to correct it, and your only option may be to accept data loss. In order to sustain a SQL Server instance that provides optimum performance, it requires constant maintenance. Luckily, you can use the same tools within SQL Server to automate maintenance tasks that you use to meet the business needs of the organization. By taking advantage of features like Database Mail, SQL Server Agent, and maintenance plans to automatically maintain your servers and notify you of failures, you will have more free time to work on all of those past due projects you haven t gotten around to.

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Figure 10-7. Using a render transform The other shortcoming in this example is the fact that you need a fair bit of markup to define the margins, event handlers, and transforms for all the buttons. You can streamline this markup by using styles to apply the same settings to various buttons (see 12) or by configuring the buttons programmatically.

The incoming e-mails can have attachments, and there are several options to control how these are handled. The first option is to include all attachments in the root folder. This will create a document in the list for each attachment. Figure 3-16 shows the library contents after two e-mails have been received.

The first thing you should do when automating maintenance tasks is to set up Database Mail. This will allow you to receive automatic notifications for things like job failures and alerts. After all, what good is automating tasks if you constantly have to go out to each server and make sure everything looks okay There are a couple of ways to configure Database Mail. One is using the Database Mail Configuration Wizard and the other is good old T-SQL. First, we will walk you through the wizard and explain the options available when setting up Database Mail, and then we will provide a script using T-SQL that you can use to perform the same actions.

Just as you can animate transforms, you can also animate perspective projections namely, the PlaneProjection class you studied in 9, which allows you to simulate a flat, tilted 3-D surface. For example, imagine you have a group of elements wrapped in a Border control, and that border uses a PlaneProjection, as shown here: <Border CornerRadius="2" Padding="10" Height="140" Width="170" BorderBrush="SlateGray" BorderThickness="4"> <Border.Projection> <PlaneProjection x:Name="projection"></PlaneProjection> </Border.Projection> ... </Border> Currently, the PlaneProjection in this example doesn t do anything. To change the way the elements are rendered, you need to modify the RotateX, RotateY, and RotateZ properties of the PlaneProjection object, which turns the 2-D surface of the border around the appropriate axis. You saw how to pull this off in 9, but now you ll use an animation to change these properties gradually and continuously.

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