By John Papa
This finished publication teaches you ways to construct data-rich enterprise functions with Silverlight 2 that draw on a number of resources of knowledge. full of reusable examples, Data-Driven companies with Silverlight 2 covers all the information entry and internet carrier instruments you would like, together with information binding, the LINQ facts querying part, RESTful and cleaning soap internet provider help, cross-domain internet provider calls, and Microsofts new ADO.NET facts prone and the ADO.NET Entity Framework.With this booklet, you will:Know while and the way to exploit LINQ to JSON, LINQ to XML, and LINQ to ObjectsLearn how Silverlight 2 functions bind, move, learn, retailer, question, and current dataDiscover how your software can name net providers to paintings with cleaning soap, relaxation, RSS, AtomPub, POX and JSONDesign relaxation, ASMX, and WCF net providers that converse with Silverlight 2Harness RESTful net providers resembling Digg, Amazon, and TwitterRetrieve and retailer information utilizing the recent Entity Framework and WCFWork with RESTful ADO.NET facts prone and its Silverlight purchaser library to maneuver facts among your Silverlight program and a databaseData-Driven prone with Silverlight 2 bargains many advice and tips for construction data-rich enterprise functions, and covers the situations youre probably to come across. entire examples in C# and VB could be downloaded from the books significant other web site.
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Additional resources for Data-Driven Services with Silverlight 2
All other properties could change and this user control will allow the user to modify them, so their binding modes are all set to TwoWay. 59 60 Example 3-1. org/markup-compatibility/2006" >
Then the binding must either use the inherited DataContext or indicate a specific source object. Once the binding is created, it is bound to the target using the SetBinding method of the target object. NOTE It is always easy to tell what objects support binding, because the object will have the SetBinding method. SetBinding is a method of the FrameworkElement base class. First, an examination of the example application that demonstrates runtime binding is in order. The user control in Figure 2-5 shows the state of the controls when they are first loaded.
3. TwoWay TwoWay binding builds off OneWay binding by adding the ability to send changed data in the target back to the source. Both OneWay and TwoWay binding notify the target about changes if the source object 58 59 implements the INotifyPropertyChanged interface and the source's property setters raise the PropertyChanged event. Table 3-1 and Figure 3-3 both demonstrate how TwoWay binding has everything OneWay binding offers, plus the ability to send changes back to the source. Figure 3-3. TwoWay binding The following example demonstrates how to create a TextBox that is bound to an inherited DataContext using the TwoWay binding mode: