AJAX :: Show/hide The Text Box Depending On The Text Of The Selected Item In The Combo Box?
Nov 13, 2010
I have a .net 3.5 web form with an ajax combo box and a text box inside it. The bombo box is bound to a SqlDataSource.
My requirement is to show/hide the text box depending on the text of the selected item in the combo box. If a particular string, say 'xyz', appears in the text of the selected item, the I will make the text box invisible. I enabled the AutoPostback, made the text box disappear in the SelectedIndexChanged event, and everything worked fine.
However, when users enter their own texts (which are not in the list items), I am unable to show / hide the text box. I've tried the TextChanged event but nothing happens. It seems the event is not trigger after I enter a new text and locate the focus to other place.
is there a way to prevent the user ented text from being inserted into the bombo box?
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List controls deriving from ListControl, such as DropDownList, ListBox or RadioButtonList, are populated by a list of ListItems. A ListItem has a Value and a Text property.
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ListControl.SelectedValue returns the Value property of the currently selected ListItem.
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This is by design:
[code]....
The Text property gets and sets the same value that the SelectedValue property does.
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