September 2003
Intermediate to advanced
1008 pages
26h 5m
English
Content preview from Programming ASP.NET, Second Edition
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Panel Control
The Panel control is used as a container for other controls. It serves several functions:
To control the visibility of the controls it contains
To control the appearance of the controls it contains
To make it easier to generate controls programmatically
The Panel control is derived from WebControl and adds the properties shown in Table 5-15.
Table 5-15. Properties of the Panel control properties not inherited from WebControl
|
Name |
Type |
Get |
Set |
Values |
Description |
|---|---|---|---|---|---|
|
BackImageUrl |
String |
x |
x |
The URL of an image to display behind the table. If the image is smaller than the table, it is tiled. | |
|
HorizontalAlign |
HorizontalAlign |
x |
x |
|
Specifies the horizontal alignment of the contents of all the cells
in the row. Default is |
|
Wrap |
Boolean |
x |
x |
|
If |
Example 5-31 demonstrates how to control the appearance and visibility of child controls and add controls programmatically using C#. Example 5-32 shows the script block of the same program in VB.NET. The HTML section of the code is the same for both the VB.NET and C# versions; consequently, the HTML is shown only in the C# version.
Example 5-31. Panel control using C#, csASPPanel.aspx
<%@ Page Language="C#" %> <script runat="server"> void Page_Load(Object sender, EventArgs e) { // Show/Hide Panel Contents if (chkHide.Checked) { pnl.Visible=false; ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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