qr code generator vb.net free Data Binding with Silverlight in Visual Studio .NET

Print USS Code 39 in Visual Studio .NET Data Binding with Silverlight

14 Data Binding with Silverlight
Code39 Encoder In Visual Studio .NET
Using Barcode maker for .NET Control to generate, create Code 39 Full ASCII image in .NET applications.
www.OnBarcode.com
Recognizing Code 39 Full ASCII In VS .NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Catching Property Changed Events
Encode Barcode In .NET Framework
Using Barcode creator for .NET Control to generate, create bar code image in .NET framework applications.
www.OnBarcode.com
Read Bar Code In .NET Framework
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Earlier when you created the bindable class for the time series data, you built the class so that a change on one of the properties raises an event. These events are standard events, so they are pretty easy to catch. Also, you added an instance of the TimeSeriesBoundData class to your application as a resource called TSD. Take a look at the constructor for the Silverlight application. The XAML is called MainPage.xaml by default, so you can see that the constructor function is called MainPage(). After the InitializeComponent() call in the constructor, add the following code to get a reference to the class instance that is in the resources. Here s how:
Code 3 Of 9 Drawer In C#
Using Barcode creator for .NET framework Control to generate, create Code-39 image in VS .NET applications.
www.OnBarcode.com
Painting Code 39 Extended In .NET
Using Barcode generation for ASP.NET Control to generate, create Code 39 image in ASP.NET applications.
www.OnBarcode.com
TimeSeriesBoundData theData = this.Resources["TSD"] as TimeSeriesBoundData;
Print Code-39 In Visual Basic .NET
Using Barcode drawer for .NET Control to generate, create Code 39 image in .NET applications.
www.OnBarcode.com
Paint PDF-417 2d Barcode In Visual Studio .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create PDF 417 image in .NET applications.
www.OnBarcode.com
Now that you have this reference, you can specify the event handler for the PropertyChanged. In Visual Studio, if you type theData and then a period (.), you open the shortcut menu for the available properties, methods, and events. Look down the list, and you ll see the PropertyChanged event available. Select it, and press the Tab key. Then, type +=, and you ll see a tooltip appear with the suggested code. Press Tab to enter this code, and press Tab again to generate the stub for the event handler. The stub looks something like this:
Data Matrix Encoder In VS .NET
Using Barcode printer for .NET Control to generate, create ECC200 image in .NET applications.
www.OnBarcode.com
Generate EAN 128 In VS .NET
Using Barcode maker for .NET Control to generate, create UCC-128 image in Visual Studio .NET applications.
www.OnBarcode.com
void theData_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) {}
Code39 Generator In VS .NET
Using Barcode generation for VS .NET Control to generate, create Code-39 image in Visual Studio .NET applications.
www.OnBarcode.com
Encoding UPC E In .NET Framework
Using Barcode creator for VS .NET Control to generate, create UPC-E Supplement 2 image in Visual Studio .NET applications.
www.OnBarcode.com
Now, whenever the value of any of the properties changes, this event is fired. The arguments object, called e contains a property called PropertyName, which you defined earlier in this chapter. PropertyName is a string that contains the name of the property that changed. You can read this easily like this:
Drawing UPC-A In None
Using Barcode creation for Software Control to generate, create UPC Symbol image in Software applications.
www.OnBarcode.com
Making Code 3 Of 9 In None
Using Barcode creator for Microsoft Word Control to generate, create ANSI/AIM Code 39 image in Microsoft Word applications.
www.OnBarcode.com
string theProperty = e.PropertyName;
Draw Code128 In None
Using Barcode creator for Online Control to generate, create Code 128 Code Set B image in Online applications.
www.OnBarcode.com
European Article Number 13 Maker In None
Using Barcode maker for Font Control to generate, create UPC - 13 image in Font applications.
www.OnBarcode.com
Now that you have the name of the property that has changed, you can perform any additional processing. If you run this application and set a breakpoint on the preceding line of code, you can see that e.PropertyName will be open.
Create QR Code 2d Barcode In Java
Using Barcode creation for Java Control to generate, create QR Code image in Java applications.
www.OnBarcode.com
Recognize Code 39 Extended In VS .NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Part II Programming Silverlight 3 with .NET
Code 128 Code Set A Scanner In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
Matrix Barcode Printer In Java
Using Barcode printer for Java Control to generate, create 2D Barcode image in Java applications.
www.OnBarcode.com
The Binding Language
In this chapter, you can see a number of examples of binding in which a list of values is used in braces to define how the binding can work. Look at these properties, the various values that they support, and how you can use them: Source Source defines where the binding occurs. It can be a resource in the XAML, in which case you define it as a StaticResource, or another bindable source such as an IEnumerable, as discussed in 12. Path Path is the identifier of the property that you want to bind to on the source. Mode Mode defines the binding mode. It can contain the value OneWay, in which case it s a read-only binding; TwoWay, in which case it s a read and write binding; or OneTime, which is a one-off binding that occurs at the first render of the control. Converter You use Converter when data conversion is needed during a binding. You saw an example of this earlier in the chapter. Converter contains the name of an instance of the Converter class. It can also use a ConverterParameter and ConverterCulture for finer-grained handling. These aren t discussed in this book.
Summary
In this chapter, by building a bindable class and a simple application that provides both oneway and two-way data binding, you saw the basics of how data binding works in Silverlight. You also looked at how you can handle errors in the data binding using a Converter as well as the binding language that XAML uses to define the binding. The information in this chapter is a foundation on which you can build data-bound applications and understand how data binding works in sophisticated data-bound controls such as the DataGrid.
Copyright © OnBarcode.com . All rights reserved.