Visible the text box after select the item in drop

Discussion in 'ASP.NET / ASP.NET Core' started by calvin, Jul 21, 2004.

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  1. Hi,

    I need to visible a textbox and RequiredFieldValidator when user select the item in dropdownlist before click the submit button. The autopostback of dropdownlist is set to false and textbox & Validator visible also set to false. I want to call function in client script(Javascript) to call out the textbox. For example, If select item "Other", then the textbox is visible to enter data. The control to validate of requiredfieldvalidator is set to this textbox. Other than that item will hide the textbox & validator. I using ASP.NET with VB to do the data entry form.
    Thank you.

    Calvin
     
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