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In practice, you should define appearance attributes such as the background color, border width, and font in a style sheet, rather than on individual controls. For example, if you set the font individually for every control and later decide to use Times New Roman instead of Arial, you would need to update the properties of every control in your application. If you instead use a style sheet, you can update the appearance of all controls from within a single file. For more information about style sheets, refer to 2, Using Master Pages, Themes, and Caching. You can set the values of the of web server control properties by setting their attributes in Source view, by setting their properties in Design view, or by setting their properties programmatically in code. This section examines all three methods.

7. Click the Settings tab. In the Dial-Up Networking Entry text box, type Dialup to CorpNet and then click OK.

ASP.NET 4 includes many improvements to the HTML rendering engine for web server controls to comply with the latest HTML standards. If you have an existing application written for ASP.NET 3.5 or earlier, and you upgrade it to ASP.NET 4, you will probably never notice a difference in your web browser. If you do experience a problem with how controls render in ASP.NET 4, you can revert to the ASP.NET 3.5 rendering engine by defining the controlRenderingCompatibilityVersion property of the <pages> element in your Web.config file to 3.5. The following code sample demonstrates this.

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This is the first project I ve worked on in which the automatic formatting caused me any pain, but I ll leave it off for now, just to be safe There are a number of settings that can make the text editor easier to use that you should investigate in the Options dialog box RepeaterTestaspx also has a code-behind file, named RepeaterTestaspxcs, shown in Listing 9-5 Listing 9-5 RepeaterTestaspxcs, the code-behind file for the Repeater class test page.

Visual Studio automatically adds this element to the Web.config file of any ASP.NET application it upgrades to ASP.NET 4. To make sure you take advantage of the rendering improvements in ASP.NET 4, you should set the value to 4.0 (or simply remove it) and test the application thoroughly. If you need to programmatically determine whether a specific control is rendered with the ASP.NET 3.5 or ASP.NET 4 engine, check the Control.RenderingCompatibility property. Most web server controls derive from Control, so they make this read-only property available.

1. On the Tools menu, click Options. 2. In the Options - DialCorp dialog box, type iis1.example.com in the Server Address text box, post in the User Name text box, and the password for the Post account in the Password text box. Click OK.

Some controls require you to turn on more advanced, cascading style sheet friendly rendering: FormView, Login, PasswordRecovery, and ChangePassword. By default, ASP.NET renders these controls inside a <table> HTML tag to provide formatting. Typically, this works well, but using tables for formatting is considered an outdated technique. If you would prefer to use cascading style sheets to format the output from these controls, set the RenderOuterTable property to false.

The Label control displays text at a specific location on a webpage by using the properties that the control has been assigned. Use the Label control when you need to use server-side code to change the label s text or another one of its properties. If you simply need to display static text, do not use the Label control, because it requires processing on the server and increases the amount of data sent back and forth between the server and client. Instead, define your static text by using standard HTML. In forms, labels are used as captions for user input controls. For example, you might create a Label control and set Label.Text to Username: . You could then place a TextBox control to the right of the Label control so that the user would know to enter his or her user name in the text box. Because Label controls are often associated with user input controls, you can link keyboard shortcuts assigned to label controls to user input controls. In this way, if a user presses a keyboard shortcut (such as Alt+T), the web browser will set the focus to the user input control associated with the Label control. Keyboard shortcuts are useful for speeding user input when users are competent with a keyboard. More importantly, they re required for accessibility reasons; not all users are able to use a mouse to select controls. To associate a Label control with a user input control and allow the user to access the user input control with a keyboard shortcut, follow these steps:

1. 2. 3.

3. On the Tools menu, click Publish Phone Book to open the Publish Phone Book - DialCorp dialog box. 4. Click Create. 5. When the phone book has been created, the Post button is activated.

using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.Drawing;

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