Solved

Error "Handler must be a function"

Posted on 2008-09-29
6
733 Views
Last Modified: 2010-04-21
Hi

I have a problem with an asp.net AJAX calendar control on a gridview.

I add javascript to it on the row bound method for the OnClientDateSelectionChanged event.

Dim js As String = "dosomething('" & DaysX.ClientID & "','" & DaysY.ClientID & "')"
calendarEx.OnClientDateSelectionChanged = js
       
In javascript I have a function declared as

dosomething(varA,varB)

If the function is simply dosomething() no parameters the OnClientDateSelectionChanged  works

However I need to add parameters. When I add parameters the javascript is called followed by an error "Handler must be a function error"

Thanks in advance for assistance.
0
Comment
Question by:rwallacej
  • 3
  • 2
6 Comments
 
LVL 25

Assisted Solution

by:Luis Pérez
Luis Pérez earned 200 total points
ID: 22596294
Try this:

calendarEx.OnClientDateSelectionChanged = function() {
        dosomething(DaysX.ClientID,DaysY.ClientID);
}

I think it will work for you.
0
 
LVL 3

Expert Comment

by:Diveblue
ID: 22596358
in your code behind.......
Dim js As String = "dosomethingWithParams()"
calendarEx.OnClientDateSelectionChanged = js


In your script on the aspx......
function dosomethingWithParams()"
{dosomething('<%= DaysX.ClientID%>','<%=DaysY.ClientID%>');
}
0
 
LVL 3

Expert Comment

by:Diveblue
ID: 22596377
remove the quote at the end of the js function definition, it's a typo
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

Author Comment

by:rwallacej
ID: 22596585
thanks for inputs;


hi diveblue
I made a slight mod so its like this
"javascript:function(){" & "dosomething(" & DaysX.ClientID & "," & DaysY.ClientID & ");};" to pickup the ID for each row. It does compile with no errors but javascript doesn't run - no alert message or anything.


hi DiveblueD
I like this idea however it doesn't work in my case. There are multiple DaysX client IDs etc as it is on  a gridview with each row having different IDs (asp.net can't compile the page like this) so it didnt' work

0
 
LVL 3

Accepted Solution

by:
Diveblue earned 300 total points
ID: 22596760
Sounds like you'll need to do some work in the onitemCreated event of the datagrid....here you can change attributes of the INSTANCE of the clendar that is on the row....
0
 

Author Closing Comment

by:rwallacej
ID: 31501170
thanks for help.....this got me on road to solution
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

The Confluence of Individual Knowledge and the Collective Intelligence At this writing (summer 2013) the term API (http://dictionary.reference.com/browse/API?s=t) has made its way into the popular lexicon of the English language.  A few years ago, …
Introduction A frequently asked question goes something like this:  "I am running a long process in the background and I want to alert my client when the process finishes.  How can I send a message to the browser?"  Unfortunately, the short answer …
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

867 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now