Validation By Control ASP.Net

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  4. DropDownList Must Have a Value Selected Other Than the Default



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            --Please Select--
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                                            runat="server" 
                                    ControlToValidate="DropDownList1"
                                    ErrorMessage="DropDownList1 Must Have a Value Selected" 
                                    InitialValue="--Please Select--"
                                    SetFocusOnError="True" 
                                    ValidationGroup="DDL">*