How to Validate Number With Validation Control

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" ControlToValidate="txtBids" Display="Dynamic" ValidationExpression="^\d+$" ValidationGroup="step1" runat="server"  ErrorMessage="*">

Bid Should Be A Number

</asp:RegularExpressionValidator>

How To Validate Decimal Number With Validation Control

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="*" Display="Dynamic" ValidationGroup="step1" ControlToValidate="txtdiscount" ValidationExpression="^\d+(\.\d{1,2})?$" >
                                             Number Should Be Decimal
</asp:RegularExpressionValidator>