hi all ,

I'm trying to implement client call backs in my page.

there are two ddl. The second ddl population depends on the selected item of first one. So when we select an item from first ddl, it should populate the desired values in second ddl ..

for this ,

I'm implementing ICallbackEventHandler to generate the callback, and i palced the respective javascript function in aspx page to receive results,


while changing the the first ddl , second ddl is populating the list of records, after populating it is giving a
javascript error ("
_PendingCallbacks[...].async is null or not an object". i'm
triggering only one callback(not multiple),

how to resolve this issue?


thanks
kiruthikaSambandam

hi

Don't know about the invalid callback error. But there is a bug in the
javascript that the framework pumps out to deal with callbacks - two of the
javascript functions have unscoped variables used as for-loop indexers.
They are both named i. You can greatly reduce your chances of getting the
PendingCallbacks error by checking all of your own javascript for any
variables named i, and changing them to something else (or scoping them as
local variables by using the var keyword).

__________________
.....................................
''''''Rajesh''''''
Ants. . . . . . Like me