Raising event from run-time dropdownlist

[Andrew Morton]

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

[bruce barker]

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]

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