Please Help ! Validation Date ?

How can i validate a valid date when user enter the text into TextBox?Hi,

by using a CompareValidator.

<asp:TextBox ID="txtDate" runat="server" />
<asp:CompareValidator ControlToValidate="txtDate" Operator="DataTypeCheck" Type="Date" ErrorMessage="Please enter a valid date" runat="server" ID="cmpValtxtDate" />