c# barcode generator open source s BASICS OF WEB DEVELOPMENT WITH ASP.NET in visual basic

Drawer Quick Response Code in visual basic s BASICS OF WEB DEVELOPMENT WITH ASP.NET

In the following sections, you ll work through a practical example showing a number of ways to update data in data tables programmatically. Note that here you ll just modify the data in the dataset but not update the data in the database. You ll see in the Propagating Changes to a Data Source section how to persist the original data source changes made to a dataset.

<TextBlock Padding="5" Margin="5" Text="First Name" FontSize="12" Grid.Row="1" /> <TextBox Padding="5" Margin="5" FontSize="12" Grid.Column="1" Grid.Row="1" /> <TextBlock Padding="5" Margin="5" Text="Last Name" FontSize="12" Grid.Row="2" /> <TextBox Padding="5" Margin="5" FontSize="12" Grid.Column="1" Grid.Row="2" /> <Button Content="Register" Padding="5" Margin="5" FontSize="12" Grid.Column="1" Grid.Row="3" Click="Button_Click" /> <TextBlock Text="" FontSize="14" FontWeight="Bold" Grid.Column="1" Grid.Row="4" Margin="5" Name="Result" /> </Grid>

XGrid (port 4111)

Figure 11-18. RowDefinition and ColumnDefinition property collections 6. Click the button to the right of RowDefinitions (Collection) to bring up the RowDefinition Collection Editor dialog box.

After you apply this configuration file and run the same client-side command that initially resulted in the incorrect exception, you will now receive the information shown in Figure 13-11. This information correctly reflects the source of the problem.

This portlet concerns itself with data operations and page display dispatching. In the next section, we discuss the JSP pages that display the content of the application. We also briefly introduce the Java Standard Tag Library (JSTL), which we use in the JSP pages but that does not have anything to do with portals or portlets.

In this chapter, you were introduced to the ASP.NET extensions that allow you to build AJAX applications easily using your familiar tools and skills. These extensions make Ajax applications a lot easier to write, as in many cases they emit the requisite Ajax code on your behalf, without you needing to explicitly code against the XMLHttpRequest API. You took a look at some examples of building new Ajax applications using Visual Studio, as well as how straightforward it is to amend existing ASP.NET applications for a better user experience using these tools. Finally, you looked at one of the more useful facets of ASP .NET AJAX the facility to build a web service that exposes a JavaScript proxy, and how to consume this proxy, allowing web services to be called directly from the browser!

Figure 4-15. The month of December showing only holidays when school is open (a taxonomy category)

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******** Bitmap access path accepted ******** Cost: 8 Cost_io: 8 Cost_cpu: 0.000000 Selectivity: 0.002000 Not believed to be index-only. BEST_CST: 8.47 PATH: 20 Degree: 1 Note, by the way, that in this fragment of the trace file, 8.47 = 2.2 + 6.27, and in the previous fragment we have 12.87 = 6.6 + 6.27. The optimizer really is multiplying the index component by 1.1, and is giving a nonintegral value to visiting table blocks. Again, though, the 80/20 approximation used here starts to break down if pressed too hard, with diverging results as data sizes increase and the number of indexes used goes up.