Hello,
I have a dropdown list on a user control and the AutoPostBack property is
set to True. I want to use the SelectedIndexCh anged event to populate some
text boxes based on what the user chose in the dropdown list.
However, the SelectedIndexCh anged event doesn't fire. In the immediate
window it appears that the index is not changing when I select a different
option in the list.
After wrestling with this for a couple hours, I think it has to do with the
fact that I am loading the list options from the database:
sql = "SELECT Code, Description FROM luApptType"
ds = clsDB.GetDataSe t(sql)
With Me.lstApptType
.DataSource = ds
.DataTextField = "Descriptio n"
.DataValueField = "Code"
.DataBind()
.Items().Insert (0, New ListItem(""))
End With
The code above is contained in a LoadLists function that is called in the
first Page Load:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
If Not IsPostBack Then
LoadLists()
End If
End Sub
When I try this with a second dropdown where the options are hard-coded, the
SelectedIndexCh anged event fires as expected. No problems.
Can you tell me why it's not working with the first dropdown where the
options are loaded at runtime?
Thanks -- I'm at my wit's end!
1  5740 
Please disregard my earlier post. I had a coworker take a look at it, and on
the first run-through, it magically started working.
"Jack" wrote: Hello,
I have a dropdown list on a user control and the AutoPostBack property is
set to True. I want to use the SelectedIndexCh anged event to populate some
text boxes based on what the user chose in the dropdown list.
However, the SelectedIndexCh anged event doesn't fire. In the immediate
window it appears that the index is not changing when I select a different
option in the list.
After wrestling with this for a couple hours, I think it has to do with the
fact that I am loading the list options from the database:
sql = "SELECT Code, Description FROM luApptType"
ds = clsDB.GetDataSe t(sql)
With Me.lstApptType
.DataSource = ds
.DataTextField = "Descriptio n"
.DataValueField = "Code"
.DataBind()
.Items().Insert (0, New ListItem(""))
End With
The code above is contained in a LoadLists function that is called in the
first Page Load:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
If Not IsPostBack Then
LoadLists()
End If
End Sub
When I try this with a second dropdown where the options are hard-coded, the
SelectedIndexCh anged event fires as expected. No problems.
Can you tell me why it's not working with the first dropdown where the
options are loaded at runtime?
Thanks -- I'm at my wit's end!
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