Using Visual Studio.net 2003 to create an aspx web form I am having a
problem selecting an item from DropDownListBox with id= ListBoxStudies.
I can see the items from the bound database table but when I click on an item
the selected item stays at itemindex 0. What must I do to have the
itemindex change when I click on an item. What's missing from the following
code?
ListBoxStudies. DataSource = BICDataSet.Tabl es("protocols" )
ListBoxStudies. DataTextField = "Study_name "
ListBoxStudies. DataValueField = "irb_number "
ListBoxStudies. DataBind()
I have tested this using a submit button and the _SelectedIndexc hanged event
and I still always get selectedindex = 0.
Private Sub DropDownListStu dies_SelectedIn dexChanged(ByVa l sender As
System.Object, ByVal e As System.EventArg s)
Dim study_name As String = Session("study_ name")
study_name = ListboxStudies. SelectedItem.Te xt
End Sub
--
Derek V. Taylor
UCI Brain Imaging Center
2  1769 
You may want to ensure you're binding only on the initial page load and not
on each postback, which could effectively overwrite the user's selection.
Here's an example:
'Page_Load event...
If Not Page.IsPostBack () Then
ListBoxStudies. DataSource = BICDataSet.Tabl es("protocols" )
ListBoxStudies. DataTextField = "Study_name "
ListBoxStudies. DataValueField = "irb_number "
ListBoxStudies. DataBind()
End If
--
I hope this helps,
Steve C. Orr, MCSD, MVP http://SteveOrr.net
"Derek Vincent" <De**********@d iscussions.micr osoft.com> wrote in message
news:E2******** *************** ***********@mic rosoft.com... Using Visual Studio.net 2003 to create an aspx web form I am having a
problem selecting an item from DropDownListBox with id= ListBoxStudies.
I can see the items from the bound database table but when I click on an
item
the selected item stays at itemindex 0. What must I do to have the
itemindex change when I click on an item. What's missing from the
following
code?
ListBoxStudies. DataSource = BICDataSet.Tabl es("protocols" )
ListBoxStudies. DataTextField = "Study_name "
ListBoxStudies. DataValueField = "irb_number "
ListBoxStudies. DataBind()
I have tested this using a submit button and the _SelectedIndexc hanged
event
and I still always get selectedindex = 0.
Private Sub DropDownListStu dies_SelectedIn dexChanged(ByVa l sender As
System.Object, ByVal e As System.EventArg s)
Dim study_name As String = Session("study_ name")
study_name = ListboxStudies. SelectedItem.Te xt
End Sub
--
Derek V. Taylor
UCI Brain Imaging Center
Wow! That was great; I gave you a direct question and you gave me a direct
and effective response. The application works: All is love; all is peace;
all is harmony.
--
Derek V. Taylor
UCI Brain Imaging Center
"Steve C. Orr [MVP, MCSD]" wrote: You may want to ensure you're binding only on the initial page load and not
on each postback, which could effectively overwrite the user's selection.
Here's an example:
'Page_Load event...
If Not Page.IsPostBack () Then
ListBoxStudies. DataSource = BICDataSet.Tabl es("protocols" )
ListBoxStudies. DataTextField = "Study_name "
ListBoxStudies. DataValueField = "irb_number "
ListBoxStudies. DataBind()
End If
--
I hope this helps,
Steve C. Orr, MCSD, MVP
http://SteveOrr.net
"Derek Vincent" <De**********@d iscussions.micr osoft.com> wrote in message
news:E2******** *************** ***********@mic rosoft.com... Using Visual Studio.net 2003 to create an aspx web form I am having a
problem selecting an item from DropDownListBox with id= ListBoxStudies.
I can see the items from the bound database table but when I click on an
item
the selected item stays at itemindex 0. What must I do to have the
itemindex change when I click on an item. What's missing from the
following
code?
ListBoxStudies. DataSource = BICDataSet.Tabl es("protocols" )
ListBoxStudies. DataTextField = "Study_name "
ListBoxStudies. DataValueField = "irb_number "
ListBoxStudies. DataBind()
I have tested this using a submit button and the _SelectedIndexc hanged
event
and I still always get selectedindex = 0.
Private Sub DropDownListStu dies_SelectedIn dexChanged(ByVa l sender As
System.Object, ByVal e As System.EventArg s)
Dim study_name As String = Session("study_ name")
study_name = ListboxStudies. SelectedItem.Te xt
End Sub
--
Derek V. Taylor
UCI Brain Imaging Center
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