Listbox allows duplicate values

[Kevin]

I have 2 listboxes on my page, I tried the allowduplicates = false and it still does not work.  what I have is a 1st LB that takes many values and they drag and drop which ones they want to a second LB, however they can reload the 1st lb with the same Id's sometimes and tehn drag tehm over agian becuase in the db I do not failsafe that they cannot get ahold of the id until they save.  I put allowSuplicates to false but it still happens, what is my way to get around this without haveing to write a bunch of codebehind to cut it out or figure out Javascript to work with it as well.

<table width="100%">
                                       <tr>
                                           <td style="width:15%"></td>
                                           <td style="width:30%"><telerik:RadListBox ID="lbItems" runat="server" Width="300px" Height="450px" AllowTransferOnDoubleClick="true" EnableDragAndDrop="true" CssClass="aspControl"
                                                                   SelectionMode="Multiple" AllowTransfer="true" TransferToID="lbIssue" AllowTransferDuplicates="false" /></td>
                                           <td style="width:10%"></td>
                                           <td style="width:30%"><telerik:RadListBox ID="lbIssue" runat="server" Width="300px" Height="450px" CssClass="aspControl" AllowTransferDuplicates="false"></telerik:RadListBox></td>
                                           <td style="width:15%"></td>
                                       </tr>
                                   </table>

Here are the follwoing 2 events that can load the 1st dropdownlist.

Protected Sub txtSearch_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
        Dim Id As Integer = HFSN.Value
        ClearLookup()
        lbItems.Items.Clear()

        sql = "Select dr.intRecId, dr.strSN  + ' \ ' + dm.strMake + ' ' + m.strModel SN from Drat_Received dr INNER JOIN Drat_Model m on m.intModelId = dr.intModelId INNER JOIN Drat_Make dm on dm.intMakeId = " _
            & "m.intMakeId where dr.intRecId = " & Id & " And intTransTypeID = 4 and bitTempRec IS NULL"

        lbItems.DataSource = getData(sql)
        lbItems.DataValueField = "intRecId"
        lbItems.DataTextField = "SN"
        lbItems.DataBind()

    End Sub

Protected Sub ddlModel_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddlModel.SelectedIndexChanged
    Dim Id As Integer = ddlModel.SelectedValue
    ClearLookup()
    lbItems.Items.Clear()
    sql = "Select dr.intRecId, dr.strSN  + ' \ ' + dm.strMake + ' ' + m.strModel SN from Drat_Received dr INNER JOIN Drat_Model m on m.intModelId = dr.intModelId INNER JOIN Drat_Make dm on dm.intMakeId = " _
        & "m.intMakeId where dr.intModelId = " & Id & " And intTransTypeID = 4  and bitTempRec IS NULL Order by dr.strSN"
    lbItems.DataSource = getData(sql)
    lbItems.DataValueField = "intRecId"
    lbItems.DataTextField = "SN"
    lbItems.DataBind()
End Sub

[Kevin]

hi,
Anyone have any ideas on this, my project is at a dead stop becuase of this issue.  I have a service that find computer items to issue by Serial Number and it loads the first lb1, then is dragged to lb2 to issue, lb1 can also be populated by a dropdownlist with many items, and has the potential to find a serial number that was populated already.  But it can be duplicated over even though I have dupdlicates set to false.  HELP Please.

[Bozhidar]

Hi Kevin,

This was a bug in RadListBox which has now been fixed. You can visit the following link for reference:
http://www.telerik.com/products/aspnet-ajax/whats-new/release-history/q1-2012-sp1-version-2012-1-411.aspx 
 
Regards,
Bozhidar
the Telerik team

[Kevin]

HI,
ok i thougth I was going crazy becuase it was working with my old toolset and i upgraded and then people started to complain about it.  So I tried to install the package from the site and it errors out on me, is there andother way to do this.  I get a
system.ComponentModel.win32exception: Access is denied at system.diagnostics.process.startwithshellExecuteEx(ProcessStartInfo startinfo)
at
system.diagnostics.process.srat()
at boostrapper.bootstrapper.runfile()
at bootstrapper.mainform.runapplication()

this is the text of popup.

I did this with my admin priledges and did not work, so then I logged into computer as admin and still got the same message.

[Kate]

Hello Kevin,

As far as I understand you are trying to upgrade from a certain version of our controls to the latest one. If this is the case I would suggest that you check out the following post where you can find detailed explanation on how to do that:
http://www.telerik.com/support/kb/aspnet-ajax/general/updating-radcontrols-for-asp-net-to-another-version-or-license.aspx

Greetings,
Kate
the Telerik team