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New Message on MumbaiUserGroup
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From: Swapnil_B1
Message 1 in Discussion
New Validation Controls Properties in ASP.NET 2.0<o:p></o:p>
ValidateEmptyText
The ValidateEmptyText property, new in ASP.NET 2.0, fixes an issue with
CustomValidator. In ASP.NET 1.0 custom validation would not fire if the text of
the ControlToValidate was empty. You can set this property to true to cause
custom validation to occur for empty input values.
Validation Groups
You can use the ValidationGroup property when you want to perform separate
validation scenarios on the same page. Set the group name on validator controls
and on the button or other postback control that causes validation. This is
useful with Wizard control, MultiView or data controls (for editing scenarios).
To enable validation groups, set this property to the same value for all
validators that should belong to a common group. On a Button control in the
form with CausesValidation set to true, you also set the ValidationGroup
property to the name of the group that should be validated when the Button is
clicked. By default all validators are in the "" group (default group), for
backward compatibility. The Page object also exposes a GetValidators("group")
method and Validate("group") method for retrieving a collection of validators
in a specific group. Page.IsValid reflects validity of all controls
(cumulative) that have had Validate called.
SetFocusOnError
Another new validation feature in ASP.NET 2.0 is SetFocusOnError which is set
on validator controls which causes the first invalid control to receive focus.
Focus API and DefaultButton
The Focus API allows you to declaratively or programmatically set focus to
specific controls on the form. You can use the Page.SetFocus method to pass the
ID of a control that should receive focus or you can call the Focus method on
the control directly. You can also set the DefaultFocus property of the Form
element to the ID of a control that should receive focus when the page is first
loaded. Similar to DefaultFocus, you can set the DefaultButton property of the
Form element to the ID of a Button control that should submit when the Enter
key is pressed inside of any input control on the form. If your page should
have different default buttons depending on the input control that has current
focus, you can wrap specific input controls in a Panel control and set the
DefaultButton property of the Panel instead. Any input control in the Panel
will use the Panel's DefaultButton property to submit the form when the Enter
key is pressed from within the input control. A validation feature that depends
on the Focus API is SetFocusOnError which is set on validator controls to cause
the first invalid control to receive focus. The following example shows the
Focus API, DefaultButton, DefaultFocus, and SetFocusOnError features in use on
a single form.
Swapnil (Swaps)
http://swapsnet.spaces.live.com/
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