Getting problem in gridview EditItemTemplate

Question

 <EditItemTemplate>

                        <asp:DropDownList ID="DropDownList1" runat="server" SelectedValue = '<%# Bind("Gender") %>'>

                            <asp:ListItem Text="Select Gender" Value="Select Gender"></asp:ListItem>

                            <asp:ListItem>Male</asp:ListItem>

                            <asp:ListItem>Female</asp:ListItem>

                        </asp:DropDownList>

                    </EditItemTemplate>

Showing me error : DropDownList1' has a SelectedValue which is invalid because it does not exist in the list of items