In order to activate control on a form based on user interaction with a user control, without the need for a postback

On my website, there is a user control with an assortment of radio buttons, a combo box, text box, and more. The Save button on the page should only be activated when the user makes a change to any of these controls. I am looking for a way to enable this Save button using JavaScript without having to perform a post back. However, all the controls that can trigger a change are located within the user control rather than directly on the page. Does anyone have any ideas or suggestions on how I could achieve this functionality?

javascriptasp.netwebforms

Answer №1

When you include java script in a user control and attempt to access the save button located on the web page, the button control will be retrieved at runtime because the user control becomes part of the web page during execution.

Therefore, implement a javascript function that is called upon radio button or combo box change events to enable or disable the button as needed.

If you have any questions, feel free to ask.

User control code :

<script type="text/javascript>
    function test() {
            document.getElementById("btnSave").disabled = true;
    }

Invoke the above test function on the radio button's onclick event.

Web page (parent page)

<asp:Button ID="btnSave" Text="save" runat="server" />

Additionally, remember to add your user control here...

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