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if (this.registerForm.ValidateItem() && this.registerForm.CommitEdit()) { _regOp = _registration.SubmitChanges(); _regOp.Completed += RegistrationOperation_Completed; } else { SetEditableState(true); } The remaining code configures the UI based on the user interaction and displays a UI to enable new user registration. The other folder in the Business Application project template is Libs, which contains ActivtyControl.dll and System.Windows.Controls.Data.DataForm.Toolkit.dll. These assemblies provide access to the Activity and DataForm custom controls that are part of the Silverlight Toolkit, which is available here as of this writing: http://www.codeplex.com/Silverlight The Activity custom control can wrap a combination of controls, databinding its IsActive property to the IsBusy attribute of a DomainDataSource object. The other assembly in the Libs folder is System.Windows.Controls.Data.DataForm.Toolkit.dll. Adding a reference to this assembly makes the DataForm control available to your application, which enables rapid development of data forms. We cover the Activity and DataForm controls in more detail in Recipe 9-3, but we wanted to fully explain the Business Application template as part of this recipe.

Information about the various fields of a list is obtained via the List.Fields property, as shown in Listing 13 12. Listing 13 12. Retrieving List Schema Information (MainPage.cs) public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); } FieldCollection fieldColl; private void ClientSuccess(object sender, ClientRequestSucceededEventArgs e) { Dispatcher.BeginInvoke(() => {

Take advantage of Microsoft .NET RIA Services and the DomainDataSource control to easily make data available to a Silverlight application.

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lbAllFields.DataContext = fieldColl; }); } private void ClientFailed(object sender, ClientRequestFailedEventArgs e) { MessageBox.Show(e.Exception.Message, "Exception", MessageBoxButton.OK); } private void GetAllFields(string list) { using (ClientContext ctx = new ClientContext("http://sharepointserve/")) { try { fieldColl = ctx.Web.Lists.GetByTitle(list).Fields; ctx.Load(fieldColl); ctx.ExecuteQueryAsync( new ClientRequestSucceededEventHandler(ClientSuccess), new ClientRequestFailedEventHandler(ClientFailed)); } catch (Exception ex) { MessageBox.Show(ex.Message, "Exception", MessageBoxButton.OK); } } } private void btnRetrieve_Click(object sender, RoutedEventArgs e) { string list = txtList.Text; if (!String.IsNullOrEmpty(list)) { GetAllFields(list); } } } The XAML defines a TextBox and a Button to invoke the call. This is a very rudimentary solution if the user types the wrong name, an exception is thrown. The XAML binds the InternalName and FieldTypeKind properties (see Listing 13 13). Listing 13 13. Retrieving List Schema Information (XAML) <UserControl x:Class="RetrieveFieldInformation.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400"> <Grid x:Name="LayoutRoot" Background="White">

<TextBlock >Shows all Fields of the this list:</TextBlock> <ListBox x:Name="lbAllFields" Margin="5,30,5,5" ItemsSource="{Binding}" > <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding InternalName}" Margin="5"> </TextBlock> <TextBlock Text="{Binding FieldTypeKind}" Margin="5"> </TextBlock> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> <TextBox Height="23" HorizontalAlignment="Left" Margin="201,1,0,0" Name="txtList" VerticalAlignment="Top" Width="105" /> <Button x:Name="btnRetrieve" Content="Retrieve" Height="28" HorizontalAlignment="Left" Margin="320,-1,0,0" VerticalAlignment="Top" Width="75" Click="btnRetrieve_Click" /> </Grid> </UserControl> While the binding limits the output, the whole list of properties is obtained from the server. To limit the transferred data to only what is needed, replace the Load method with a filtered version: ctx.Load(fieldColl, fields => fields.Include( field => field.InternalName, field => field.FieldTypeKind)); The result of this example is shown in Figure 13 10.

Although application services such as authentication, registration, and profile support that the default Business Application template provides are very useful, .NET RIA Services are all about easily providing data to a Silverlight application. .NET RIA Services includes the DomainService and WebDataService classes for the middle tier as well as the DomainDataSource control for the presentation tier to manage data flow in the application. For the middle-tier functionality, the DomainService class was part of the original beta available at the Mix 09 conference. Since the MIX conference, Microsoft has received a lot of feedback regarding implementing .NET RIA Services on top of ADO.NET Data Services. Incorporating ADO.NET Data Services as the underlying protocol is part of the plan as of this writing for future .NET RIA Services releases.

Creating a new SharePoint list requires an instance of the ListCreationInformation class. At a minimum, you need to define the Title and the TemplateType properties, and add the list fields. In Listing 13 14, the fields are defined in XML and added to the list using the AddFieldAsXml method. Listing 13 14. Creating a New List (MainPage.xaml.cs) public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); } class NewField { public string Name { get; set; } public bool Integer { get; set; } } List<NewField> newFields; private void CreateList() { using (ClientContext ctx = new ClientContext("http://sharepointserve/")) { try {

In Part One we saw how naively applied project management practices can derail software projects run by even the most capable project managers Is the solution to throw out half of project management s best practices and hope for the best The case study helped us to understand how poor quality can bring down a software development project But solutions are available Over the last five to ten years, several new software development methodologies have been developed specifically to resolve the issues around software quality These methodologies are called agile because they aim to maximize flexibility and minimize overhead in the process of software development (see the agile manifesto in the Appendix) They re not based on theory, but rather derived from the experiences of successful project teams.

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