Page 84 - DCAP312_WEB_TECHNOLOGIES_II

Web Technologies-II

Notes
Figure 4.7: Validation errors showed using the validation
summary server control

By default, the Validation Summary server control shows the errors in a bulleted list on the
page using red text. We have the option to completely alter how output displays in the browser.
To change how the error messages are displayed, we can change the value of the Display Mode
property of the Validation Summary control.
The possible values of this control can be set to the following:
• Bullet List

• List
• Single Paragraph
If we use the Bullet List value for the Display Mode property, it appears as shown in
(Figure 4.7). If we use List, it appears without bullets. If we use Single Paragraph, the errors
appear in a text area all on one line in a single paragraph.
Showing a Dialog Box Containing Error Notifications
One flexible feature of the Validation Summary server control is that we can easily show the
ASP.NET page’s errors in a pop-up dialog box. We have the option of showing the summary
in the browser and the dialog box together, or just in the dialog box.

The property that controls whether the message appears in the browser is the Show Summary
property. To turn off the display of validation errors in the browser, set the value of the Show
Summary property to False. To show validation errors in a dialog box, set the Validation Summary
control’s Show Message Box property to true.

78 LOVELY PROFESSIONAL UNIVERSITY