'how can multiple value in asp.net web form dropdownlist with jquery

<asp:DropDownList AutoPostBack="true" runat="server" SelectionMode="Multiple" class="form-control" ID="ddlCollateralId" AppendDataBoundItems="True" MaxLength="100" Width="300px" <asp:ListItem Text="Select status" Value="0">--Select--</asp:ListItem> </asp:DropDownList>



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