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Editorial Team
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Asked: 2026-05-14T00:31:46+00:00

<asp:TextBox ID=TextBox5 runat=server Height=30px Width=68px></asp:TextBox> <ajaxToolkit:DropDownExtender ID=TextBox5_DropDownExtender runat=server DynamicServicePath= Enabled=True TargetControlID=TextBox5> </ajaxToolkit:DropDownExtender> //this.TextBox5_DropDownExtender ????

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<asp:TextBox ID="TextBox5" runat="server" Height="30px" Width="68px"></asp:TextBox>
<ajaxToolkit:DropDownExtender ID="TextBox5_DropDownExtender" runat="server" 
DynamicServicePath="" Enabled="True" TargetControlID="TextBox5">
</ajaxToolkit:DropDownExtender>

    //this.TextBox5_DropDownExtender ????
    YearList.Items.Add(DateTime.Today.AddYears(-i).ToString("yyyy"));

Question : where is items for this DropDownExtender ?

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1 Answer

  1. Editorial Team

    There’s a property called DropDownControlID on the extender. Point that to a panel and put your items there. Something like this:

    <asp:TextBox ID="TextBox5" runat="server" Height="30px" Width="68px" />
<ajaxToolkit:DropDownExtender ID="TextBox5_DropDownExtender" runat="server" 
 DynamicServicePath="" Enabled="True" TargetControlID="TextBox5"
 DropDownControlID="pnlItems" />

<asp:Panel ID="pnlItems" runat="server" BorderColor="Black" BorderWidth="1">
   <asp:BulletedList ID="YearList" runat="server" />
</asp:Panel>

    In code, add items to YearList.

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