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"DropDownScript" is undefined error


Great job!!!
Control is working great when directly placed on page, but throwing 'DropDownScript is undefined' exception when trying to place it inside DetialsView. Please suggest, thanks

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mdrafi87 wrote Sep 30, 2012 at 1:55 PM

Hello ,
Great Control i have ever seen working perfectly in page load .But dropdown onselectedIndexchange The control is throwing error "DropDownScript" is undefined error.
       waiting for your replay.

mathaus101 wrote Feb 19, 2013 at 4:52 AM

Hi, I'm getting the same error. If I change the DropDownCheckboxes control visibility to true on a UpdatePanel postback, I get a "Microsoft JScript runtime error: 'DropDownScript' is undefined". The client-side script may not be registering. I'm wondering if tehre is a work-around for this, other than refreshing the entire page?

mathaus101 wrote Feb 19, 2013 at 5:42 AM

Fixed the issue in my case, just needed to add dd.AddJQueryReference = true; in the codebehind.

ruthlessluder wrote Feb 28, 2013 at 8:45 PM

I ran into the same issues with "dropdownscript" not defined error. I have a repeater with the DropDownCheckBoxes controls inside the ItemTemplate of the repeater. When I tried to databind the controls in code behind that's when I got that error.

If the control is used declaratively everything is fine. So my workaround is to declaratively put a control on the page and set its display property to false. (The Visible must be true otherwise the required scripts won't be added)
<div style="display:none"> <asp:DropDownCheckBoxes ID="ddcbPlaceHolderToAddRequiredScripts" runat="server" Visible="true"> </asp:DropDownCheckBoxes> </div> If anyone has a better solution please let me know.

RuudvK wrote Sep 11, 2013 at 10:15 AM

AddJQueryReference = true gave me a js error in the jquery itself.
ruthlessluder's workaround however, does work for me as well. But indeed, this is a workaround and not really a solution. I'm very curious if someone has solved this in a different way.