The ASP.Net AJAX Toolkit is a good stuff because it can let you achieve some very cool functions without doing too much hard works. However, how to do it if I want the AJAX control works only in some conditions? For example, I want to have the same function like
this one. After many times try and error, I finally figure out the correct procedures. Here are the steps:
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1. Drag and drop a TextBox onto the page.
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2. Drag and drop an UpdatePanel and set up the properties.
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3. Drag and drop a button and a ConfirmButtonExtender inside the UpdatePanel. PS: The ConfirmButtonExtender's "Enable" property must set to
True.
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4. Set the ConfirmText.
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5. Here is the key point: In the Page Initial process, set the ConfirmButtonExtender's "Enable" property to
False. We then enable the control inside the TextChanged event.
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6. After following these steps, we can do exactly the same thing as
this one without writing any javascript codes.
Thanks a ton!
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