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onTextChanged event is called for each symbol typed in the text box. When you press Enter text is not changed, and event is not called.
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onTextChanged event is called for each symbol typed in the text box. When you press Enter text is not changed, and event is not called.

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What about the KeyUp event with keycode 13?<br />

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What about the KeyUp event with keycode 13?


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It seems like when I hit the enter key, it will loop through and call all the functions in the page, and my question is after enter some text in the combo box, how can I call the onTextChangedEvent only when I press enter and not all the functions/events in the page
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It seems like when I hit the enter key, it will loop through and call all the functions in the page, and my question is after enter some text in the combo box, how can I call the onTextChangedEvent only when I press enter and not all the functions/events in the page

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Your question shows that you don't need onTextChangedEvent at all. You don't want to validate text every time user presses a key. So, validate text in other place, for example, when user presses Submit button, or when textbox looses input focus.
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Your question shows that you don't need onTextChangedEvent at all. You don't want to validate text every time user presses a key. So, validate text in other place, for example, when user presses Submit button, or when textbox looses input focus.

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Or you can call the same function both from onTextChangedEvent and from any other place.
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Or you can call the same function both from onTextChangedEvent and from any other place.

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When I enter a value in the combo box and press the Enter-Key, the onTextChanged Event does not executed, instead it calls the Click Event of the first Button at the top the asp.net page.
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When I enter a value in the combo box and press the Enter-Key, the onTextChanged Event does not executed, instead it calls the Click Event of the first Button at the top the asp.net page.

Visual Basic is Microsoft’s event-driven programming language and integrated development environment (IDE) for its Component Object Model (COM) programming model. It is relatively easy to learn and use because of its graphical development features and BASIC heritage. It has been replaced with VB.NET, and is very similar to VBA (Visual Basic for Applications), the programming language for the Microsoft Office product line.