selected item change event not firing of dropdownlist

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hi friends,
i have a problem in firing dropdownlist event
i have following dropdown

ASP.NET

<asp:dropdownlist id="ddlhello" Runat="server" AutoPostBack="True"  onchange="javascript:return ChangeHeader();">

i have also added event in code behind i.e. selectedindex change event.

Now problem occurs when i execute the page, it executes javascript but server side code doesnot fire, but if i remove this line onchange="javascript:return ChangeHeader();" then server side code fires.

when i checked source page it shows me two onchange events associated
one for javascript and other for server side.

i think that it is picking client side code and neglects server side.

I am not pretty sure, so i want to know the behavior reason.

And what is the way out for this.

i want server and client side code to be executed.
i have searched for solutions but i have not found any correct reason.
please reply for the same. Thanks in advance

Posted 23-Oct-12 0:16am

preet88

Updated 23-Oct-12 2:56am

v3

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Vijay Radia · Answer 1 · 2012-10-23T00:46:00

Solution 1

you might have not added return true; at the end of the ChangeHeader() function in javascript...

Posted 23-Oct-12 0:46am

Vijay Radia

Comments

preet88 23-Oct-12 8:55am

i have returned true, but that was not working.
its .NET 2002 in which i am making this change.

Vijay Radia 27-Oct-12 7:47am

If there is an error in javascript function then it returns false, please check for it also.