Data-Driven Services with Silverlight 2 by John Papa

By John Papa

This entire booklet teaches you the way to construct data-rich company purposes with Silverlight 2 that draw on a number of assets of knowledge. filled with reusable examples, Data-Driven companies with Silverlight 2 covers all the facts entry and net provider instruments you wish, together with info binding, the LINQ facts querying part, RESTful and cleaning soap internet carrier help, cross-domain net provider calls, and Microsofts new ADO.NET information companies and the ADO.NET Entity Framework.With this booklet, you will:Know while and the way to take advantage of LINQ to JSON, LINQ to XML, and LINQ to ObjectsLearn how Silverlight 2 purposes bind, move, learn, store, question, and current dataDiscover how your software can name internet companies to paintings with cleaning soap, relaxation, RSS, AtomPub, POX and JSONDesign leisure, ASMX, and WCF net prone that converse with Silverlight 2Harness RESTful net prone corresponding to Digg, Amazon, and TwitterRetrieve and store info utilizing the hot Entity Framework and WCFWork with RESTful ADO.NET information prone and its Silverlight buyer library to maneuver info among your Silverlight program and a databaseData-Driven providers with Silverlight 2 deals many assistance and tips for construction data-rich enterprise purposes, and covers the situations youre probably to come across. entire examples in C# and VB may be downloaded from the books better half site.

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First the code creates a new instance of a Binding object for each target and source pair. The Binding class's constructor accepts the path, which points to the Source object's property. Figure 2-6. Runtime binding, after binding Once the Binding has been created, the Source property is set to the instance of the Person class. The Source points to the source object and the path points to the Source object's property. At this point, half of the binding is completed, with only the Target control and Target property left to handle.

FrameworkElement class hierarchy 34 35 Any XAML element that derives from FrameworkElement can be used for layout on a page or user control, and can be involved in data binding as a target. Figure 2-3 shows many of the controls that derive from FrameworkElement. Control class, such as TextBox, Calendar, and DataGrid. In data binding, both a data source and at least one target are required. The target can be a control or set of controls on a page (or within a user control). Basically, the data can travel between the source and the target in both directions.

1. Binding Modes Bindings exist between a source and a target. The binding extension's Mode property determines whether the target or the source will be updated, and when it will be updated. The default value for the Mode property is different depending on the control. The Mode property indicates that the source will update the target when the data binding is first established between the source and its target(s). The OneWay binding mode also indicates that any changes to the source data will update the target as long as the source entity implements the INotifyPropertyChanged interface and its source properties raise the PropertyChanged event.

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Data-Driven Services with Silverlight 2 by John Papa
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