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Multi-Value Listbox, ObjectDataSourc e and Passing Parameter

I have a ListBox server control named "lb_dates" with a SelectionMode of
"Multiple". The user can select multiple dates from the listbox.

I have ObjectDataSourc e named "ods_rfq" with a ControlParamete r that has a
ControlID that points to "lb_dates". The PropertyName of the ControlParamete r
is "SelectedValue" .

The user selects two dates from the ListBox.

I am trying to pass BOTH selected values of the ListBox to a SelectMethod of
the ObjectDataSourc e.

For some reason, all I get passed to the SelectMethod is one of the two
values that the user selected in the ListBox?

In the SelectMethod, I have tried to define the parameter as both a String
and a ListBox but it appears that the ListBox values are being passed as a
string.

I have searched the Internet on this topic and didn't find a true answer.
Some guy hid the ListBox values in a Label field, then accessed that. I guess
I can do that but I would rather find a better solution, if there is one.

Could someone enlighten me as to how I can access both (or all) of the
selected items in the ListBox, rather than just one of them?

The code is below for reference.

ASPX Page
----------
<asp:ListBox ID="lb_dates" runat="server" Rows="3" SelectionMode=" Multiple"
/><br />
....
<asp:ObjectData Source ID="ods_rfq" runat="server"
SelectMethod="G et_RFQ_Data" TypeName="Intra net_Engine.RFQ_ Class">
<SelectParamete rs>
<asp:ControlPar ameter ControlID="lb_d ates" Name="dates"
Type="Object" PropertyName="S electedValue" />
</SelectParameter s>
</asp:ObjectDataS ource>
ASPX.VB Page
------------
Public Class RFQ_Class

Public Function Get_RFQ_Data(By Val dates As String) As DataTable
'THIS IS WHERE I WANT THE dates VARIABLE TO CONTAIN BOTH SELECTED
VALUES OF THE LISTBOX BUT I ALWAYS ONLY GET ONE.

Return DB.DataTable
End Function

End Class
Aug 19 '08 #1
0 2151

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