Button Controls:
ASP .Net provides three types of button controls: buttons, link buttons and
image buttons. As the names suggest a button displays text within a rectangular
area, a link button displays text that looks like a hyperlink. And an Image
Button displays an image.
When a user clicks a button control, two events are raised Click and
Command.
Basic syntax for button controls:
<asp:Button ID="Button1" runat="server"
onclick="Button1_Click" Text="Click" />
Common Properties of the Button control:
|
Property
|
Description
|
|
Text
|
The text displayed by the button. This is for button and
link button controls only.
|
|
ImageUrl
|
For image button control only. The image to be displayed
for the button.
|
|
AlternateText
|
For image button control only. The text to be displayed if
the browser can't display the image.
|
|
CausesValidation
|
Determines whether page validation occurs when a user
clicks the button. The default is true.
|
|
CommandName
|
A string value that's passed to the Command event when a
user clicks the button.
|
|
CommandArgument
|
A string value that's passed to the Command event when a
user clicks the button.
|
|
PostBackUrl
|
The URL of the page that should be requested when the user
clicks the button.
|
|
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