«

I'm creating DropDownList controls at run-time, and I've found I have to add
the onchange event myself (.Attributes.Add(...) below).

Is that the way it's meant to happen, or have I missed something that would
automatically add the onchange event?

U = New DropDownList
With U
.DataSource = dv
.DataTextField = "myChoice"
.DataValueField = "myValue"
.DataBind()
' n is the number of this control
.ID = "U_" & n.ToString
' select the current value
For k As Integer = 0 To UBound(usageValues)
If CStr(entry("usage")) = usageValues(k) Then
.SelectedIndex = k
Exit For
End If
Next
AddHandler .SelectedIndexChanged, AddressOf
ModifyUsage_SelectedIndexChanged
.Attributes.Add("onchange", "__doPostBack('U_" & n.ToString & "')")
End With

Andrew

you want to set AutoPostBack.

-- bruce (sqlwork.com)



Andrew Morton wrote:
> I'm creating DropDownList controls at run-time, and I've found I have to add
> the onchange event myself (.Attributes.Add(...) below).
>
> Is that the way it's meant to happen, or have I missed something that would
> automatically add the onchange event?
>
> U = New DropDownList
> With U
> .DataSource = dv
> .DataTextField = "myChoice"
> .DataValueField = "myValue"
> .DataBind()
> ' n is the number of this control
> .ID = "U_" & n.ToString
> ' select the current value
> For k As Integer = 0 To UBound(usageValues)
> If CStr(entry("usage")) = usageValues(k) Then
> .SelectedIndex = k
> Exit For
> End If
> Next
> AddHandler .SelectedIndexChanged, AddressOf
> ModifyUsage_SelectedIndexChanged
> .Attributes.Add("onchange", "__doPostBack('U_" & n.ToString & "')")
> End With
>
> Andrew
>
>

> Andrew Morton wrote:
>> I'm creating DropDownList controls at run-time, and I've found I
>> have to add the onchange event myself (.Attributes.Add(...) below).
>>
>> Is that the way it's meant to happen, or have I missed something
>> that would automatically add the onchange event?

bruce barker wrote:
> you want to set AutoPostBack.

Aha! Thanks

Andrew