Distortion of graphics with RadListBox

[DrGiorgini]

Hello everyone,
i recently implemented within a RadGrid with a GridTemplateColumn RadListBox inside the ItemTemplate.
Look what happened to the RadEditor by side...Also the selection of entries within RadListBox is very slow...
If i take the course RadListBox returns everything to normal...
For knowledge I recently upgraded to version 2011.1.315.40
Help me pls :S

<telerik:GridTemplateColumn FilterControlWidth="100px" CurrentFilterFunction="Contains" ShowSortIcon="true" ShowFilterIcon="false" AutoPostBackOnFilter="true" HeaderButtonType="TextButton"
    DataField="colori_stampa" SortExpression="colori_stampa" HeaderText="Colori di stampa" UniqueName="colori_stampa">
    <ItemTemplate>
        <asp:Label runat="server" ID="lbl_colori_stampa" Text='<%# Eval("colori_stampa") %>'></asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <table width="300">
            <tr>
                <td>
                    <asp:Label runat="server" ID="lbl_colori_stampa_bianca" Text='Colori di stampa (bianca)'></asp:Label><br />
                    <telerik:RadListBox
                        OnItemDataBound="Lb_colori_stampa_bianca_ItemDataBound"
                        SelectionMode="Multiple"
                        DataSourceID="SqlDataSourceColori"
                        ID="Lb_colori_stampa_bianca" runat="server" CheckBoxes="true"
                        DataKeyField="id"
                        DataTextField="colore_stampa"
                        DataValueField="codice_colore"
                        Width="200px"
                        Height="300px">
                    </telerik:RadListBox>
                </td>
            </tr>
            <tr>
                <td>
                    <asp:Label runat="server" ID="lbl_colori_stampa_volta" Text='Colori di stampa (volta)'></asp:Label><br />
                    <telerik:RadListBox
                        OnItemDataBound="Lb_colori_stampa_volta_ItemDataBound"
                        SelectionMode="Multiple"
                        DataSourceID="SqlDataSourceColori"
                        ID="Lb_colori_stampa_volta" runat="server" CheckBoxes="true"
                        DataKeyField="id"
                        DataTextField="colore_stampa"
                        DataValueField="codice_colore"
                        Width="200px"
                        Height="300px">
                    </telerik:RadListBox>
                </td>
            </tr>
        </table>
    </EditItemTemplate>
</telerik:GridTemplateColumn>

[DrGiorgini]

Anyone can help me pls...?

[Mira]

Hello Fillipo,

I tried to replicate the performance issues with the RadListBox and the RadGrid but to no avail. Attached to this message, you will find the code which I used for testing.
Please, take a look at it and let me know if there are any differences at your end, which I may be leaving out.

From the screenshot, I assume that you use a custom skin. To fix the RadEditor look, please make sure that you reference correctly the CommandSpritesLight.png file from the Skins/Common folder.
You can review the following resources for additional information:
Creating Custom Skin for RadEditor
Internet Explorer CSS limits

I hope this helps.

Greetings,
Mira
the Telerik team