Modifying Control Appearance
One of the great things about ASP.NET Server Controls is that they are incredibly flexible in allowing developers to define how they should appear on the page. Most server controls expose properties that allow simple formatting, such as fonts and background colors. All server controls also expose properties that allow for setting cascading style sheets (CSS) styles to modify the appearance of a control. Finally, some controls allow the use of templates to further define how the output of the control should appear. Together or individually, these techniques allow ASP.NET developers extensive control over the appearance of their controls.
Properties
Using control
properties is the
simplest and least powerful technique for modifying the appearance of
a control. Example 5-12 shows a page with two Label
controls, one of which uses its default settings. The second Label
control has one attribute used to set the Font-Name property. Font is
a property that is represented by the FontInfo
class. Setting the Font-Name attribute sets the
value of the FontInfo class’ Name
member. Note that this second Label control also has the BackColor
property set (in this case, to blue) in the Page_Load event handler.
The output from Example 5-12 is shown in Figure 5-8.
Example 5-12. ControlProps.aspx
<%@ Page Language="vb" %> <html> <head> <title>Control Properties Example</title> <script runat="server"> Sub Page_Load( ) Label2.BackColor = System.Drawing.Color.LightBlue End ...
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