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Some of the information items you can select are simple, such as the search item displayed in the upper-right corner of Figure 30-1, and others are more complex, such as the stock quotes listed in the bottom-right corner. Interestingly, you have many more possibilities than just selecting information items. You can specify where the information is displayed on the page by dragging items into different positions on the web page. When you log off and then later return to the page and log in, all the changes you have made will be present the page design will appear exactly how you left it. These types of pages define content areas where the user can add or remove information items. The user can select the information items from a list of available items, which are nothing more than reusable user interface elements (or controls in ASP .NET), and add them to the specified content areas of the web page. In most cases, a portal page defines multiple content areas: a main area in the center of the page for displaying the most important information, a navigational area in the left or right section of the page, and optionally another area (either on the left or right side of the page) for small items (such as a weather item or a quick-links list). Of course, most web pages also include a header and footer (which you can create easily with master pages). With the ASP .NET 2.0 WebParts Framework, you can create customizable web pages on your own easily. The framework consists of controls and components that perform the following work for you:

related InkCanvasEditingMode enumeration. For this example, you are interested in Ink mode, which is the default option you just witnessed; Select mode, which allows the user to select a region with the mouse to move or resize; and EraseByStoke, which will delete the previous mouse stroke.

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Defining customizable sections: The framework allows you to structure your page and specify customizable sections of the page through WebPartZones. Offering components for item selection: In addition to customizable sections, the framework ships with special sections that allow you to edit properties for information items displayed on the page or to add and remove information items to/from the page. Customizing the web page: As soon as the user is logged into your application, she can customize the web page by dragging and dropping items displayed on the web page onto different customizable sections. The user can even close or minimize content to create more space for other, more interesting content. Saving the customized appearance: ASP .NET automatically saves the user s personalized appearance of the web page through its personalization infrastructure. A page that uses this framework is called a WebPart page, and the information items that can be displayed on the page are called WebParts. All the pieces you put together to display on the page are controls, as you will see in the next section. Therefore, to create WebPart pages, you just need to know how to put all your custom and prebuilt controls together to create a customizable page. You will learn the details of how to do this in this chapter.

Note A stroke is the rendering that takes place during a single mouse down/mouse up operation. The

The application container allows you to add content to your application without defining any other container. Usually the application container exists to hold the main layout container of your application, and nothing else. The application container provides a default ProgressBar that you can override, to show the percentage loaded of your main SWF file.

The first thing you need to know is how to create a basic WebPart page In the following sections, you will learn the major steps for creating such a page After that, you will learn how to create WebParts, which are the information items that go on the WebPart page The steps for creating a WebPart page are as follows: 1 Create the page: Create a simple ASPNET page as usual with Visual Studio NET You don t need any special type of page this is an aspx page just as any other page Before you continue, you can structure the layout of your page using HTML tables to create, for example, a page with a navigation area, a main area, and a side panel for additional information (similar to the MSN page presented in Figure 30-1) 2.

InkCanvas stores all strokes in a StrokeCollection object, which you can access using the Strokes property.

Update your RadioButtonClicked() hander with the following logic, which places the InkCanvas in the correct mode, based on the selected RadioButton: private void RadioButtonClicked(object sender, System.Windows.RoutedEventArgs e) { // Based on which button sent the event, place the InkCanvas in a unique // mode of operation. switch((sender as RadioButton).Content.ToString()) { // These strings must be the same as the Content values for each // RadioButton. case "Ink Mode!": this.myInkCanvas.EditingMode = InkCanvasEditingMode.Ink; break; case "Erase Mode!": this.myInkCanvas.EditingMode = InkCanvasEditingMode.EraseByStroke; break; case "Select Mode!": this.myInkCanvas.EditingMode = InkCanvasEditingMode.Select; break; } } Also, set the mode to Ink by default in the window s constructor. And while you are at it, set a default selection for the ComboBox (more details on this control in the next section): public MainWindow() { this.InitializeComponent(); // Be in Ink mode by default. this.myInkCanvas.EditingMode = InkCanvasEditingMode.Ink; this.inkRadio.IsChecked = true; this.comboColors.SelectedIndex=0; } Now run your program again by pressing F5. Enter Ink mode and draw some data. Next, enter Erase mode and remove the previous mouse stroke you entered (you ll notice the mouse icon automatically

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