Transcript Introduction to ASP.NET

Web Server Controls
MacDonald Ch. 5
MIS 324
Professor Sandvig
Today
Benefits of Server Controls
 Overview of HTML-like controls
 Controls unique to ASP.NET
 Data-listing controls
 Example
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ASP.NET Controls
Benefits of Server Controls
Objects with many properties & methods
 Events:
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onTextChanged
 onCheckedChanged
 onClick…
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Data stored in viewstate
 Validation controls
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Client & server validation
HTML-like controls
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Correspond to HTML tags:
 Textbox
 textarea
 Button
 Checkbox
 Radiobutton
 DropDown
 Image
 Hyperlink
 Label
Other Controls
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LinkButton control
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Looks like hyperlink
Acts like a button (postback)
Panel Control
 Use to hide/show groups of controls
 Visible property
 Can still access & change hidden control properties
 Use frequently
DataListing Controls
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Datalisting controls
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Typically fill from datasource
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RadioButtonList
CheckBoxList
GridView
Repeater
DetailsView
FormView
Example: CheckBoxListControl.aspx (source)
 Discuss in Ch. 13 ADO.NET
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Examples
 Controls
Used:
 Panel,
textbox, button, dropdown list, checkbox
list, hyperlink, label, required field validator,
custom validator
 Baker
Snowboard: source, output
Web Form Summary
Web Server controls write HTML
 Benefits:
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Viewstate
Programmatic access
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Properties
Events
Methods
Validation controls