Runtime SelectedIndexChanged!

[Adam Knight]

Hi all,

I have a DropDownList that i want to attach a OnSelectedIndexChange event
Dynamically.
So far my attempts have failed.

'determine if report being generated is a 'Question Statistics' report
If(ddlReportTypes.SelectedValue = "q") Then

'specify OnSelectedIndexChanged method Sub
'tried
ddlAssessmentAreas.SelectedIndexChanged = "LoadQuestions"
'and
ddlAssessmentAreas.OnSelectedIndexChanged = "LoadQuestions"

End If

Both options i have tried have generated errors?

Can anyone steer me in the right direction?

Adam

 

[S. Justin Gengo]

Adam,

Do you mean you want something to happen clientside onSelectedIndexChanged?

If so then you need to attach a javascript to the control using it's
attributes method.

DropDownList.Attributes.Add("onSelectedIndexChanged", "your javascript
here")

--
Sincerely,

S. Justin Gengo, MCP
Web Developer / Programmer

www.aboutfortunate.com

"Out of chaos comes order."
Nietzsche

 

[Patrick.O.Ige]

As Justin adviced..
Whats the DDL pointing too ?
What is LoadQuestions
Patrick

 

[Adam Knight]

No not after javascript...

I am wanting to attach the OnSelectedIndexChanged (ASP.NET event for
DropDownList) Method dynamically to a DropDownList.

Both these options have failed.

ddlAssessmentAreas.SelectedIndexChanged = "LoadQuestions" \\call
LoadQuestions function onSelectedIndexChange //server side
'and
ddlAssessmentAreas.OnSelectedIndexChanged = "LoadQuestions" \\call
LoadQuestions function onSelectedIndexChange //server side

Cheers,
Adam

 

[S. Justin Gengo]

Adam,

The most common cause of this failing is that if the control is being added
to the page dynamically it has to be added again on post back. If the
control isn't recreated on post back then .NET never connects up the post
back event to the control and the event doesn't fire.

--
Sincerely,

S. Justin Gengo, MCP
Web Developer / Programmer

www.aboutfortunate.com

"Out of chaos comes order."
Nietzsche