set selected value on a droplist

[TJS]

need help with trying to set selected value on a droplist.
-- tried vCaptainID as integer and string , no luck
-- tried it in pre render and also after droplist is created , no luck

========= error =============== =======
Exception Details: System.NullRefe renceException: Object reference not set
to an instance of an object.

Source Error line 392 :

Line 390: vCaptainID =5 '<=test value which exists in droplist
Line 391: Dim ctrlCaptain as DropDownList =
Eventform.FindC ontrol("IDCapta in")
Line 392: ctrlCaptain.Sel ectedIndex =
ctrlCaptain.Ite ms.IndexOf(ctrl Captain.Items.F indByValue(vCap tainID ))

[Karl Seguin]

Re: set selected value on a droplist

My guess is that the FindControl isn't finding "IDCaptain" and ctrlCaptain
is null...

if IDCaptain is embedded inside another control it won't be found via
Page.FindContro l()

you need to use parentcontrol.F indControl()

Karl

--
MY ASP.Net tutorials
http://www.openmymind.net/ - New and Improved (yes, the popup is annoying)
http://www.openmymind.net/faq.aspx - unofficial newsgroup FAQ (more to
come!)


"TJS" <nospam@here.co m> wrote in message
news:OThMzkOJFH A.1304@TK2MSFTN GP09.phx.gbl...[color=blue]
> need help with trying to set selected value on a droplist.
> -- tried vCaptainID as integer and string , no luck
> -- tried it in pre render and also after droplist is created , no luck
>
> ========= error =============== =======
> Exception Details: System.NullRefe renceException: Object reference not[/color]
set[color=blue]
> to an instance of an object.
>
> Source Error line 392 :
>
> Line 390: vCaptainID =5 '<=test value which exists in droplist
> Line 391: Dim ctrlCaptain as DropDownList =
> Eventform.FindC ontrol("IDCapta in")
> Line 392: ctrlCaptain.Sel ectedIndex =
> ctrlCaptain.Ite ms.IndexOf(ctrl Captain.Items.F indByValue(vCap tainID ))
>
>
>[/color]

[TJS]

Re: set selected value on a droplist

the eventform is the parentcontrol, but I was able to produce the desired
effect using "OnItemCrea ted "




"Karl Seguin" <karl REMOVE @ REMOVE openmymind REMOVEMETOO . ANDME net>
wrote in message news:utY9PtQJFH A.572@tk2msftng p13.phx.gbl...[color=blue]
> My guess is that the FindControl isn't finding "IDCaptain" and ctrlCaptain
> is null...
>
> if IDCaptain is embedded inside another control it won't be found via
> Page.FindContro l()
>
> you need to use parentcontrol.F indControl()
>
> Karl
>
> --
> MY ASP.Net tutorials
> http://www.openmymind.net/ - New and Improved (yes, the popup is annoying)
> http://www.openmymind.net/faq.aspx - unofficial newsgroup FAQ (more to
> come!)
>
>
> "TJS" <nospam@here.co m> wrote in message
> news:OThMzkOJFH A.1304@TK2MSFTN GP09.phx.gbl...[color=green]
>> need help with trying to set selected value on a droplist.
>> -- tried vCaptainID as integer and string , no luck
>> -- tried it in pre render and also after droplist is created , no luck
>>
>> ========= error =============== =======
>> Exception Details: System.NullRefe renceException: Object reference not[/color]
> set[color=green]
>> to an instance of an object.
>>
>> Source Error line 392 :
>>
>> Line 390: vCaptainID =5 '<=test value which exists in droplist
>> Line 391: Dim ctrlCaptain as DropDownList =
>> Eventform.FindC ontrol("IDCapta in")
>> Line 392: ctrlCaptain.Sel ectedIndex =
>> ctrlCaptain.Ite ms.IndexOf(ctrl Captain.Items.F indByValue(vCap tainID ))
>>
>>
>>[/color]
>
>[/color]