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Each time the user selects an item from a list box in a web page, a postback occurs, the web page will redisplay, and the page_load event will occur.
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Each time the user selects an item from a list box in a web page, a postback occurs, the web page will redisplay, and the page_load event will occur.

User Coen
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Only if there's javascript code to operate that way. The default behaviour is that the selection isn't posted until a submit button is pressed.
User J Wynia
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