Percentage: <asp:TextBox ID="txtPerc" runat="server" Columns="4" MaxLength="3" Width="30px" >
		</asp:TextBox> %
                     
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
ControlToValidate="txtPerc" Text="*" ErrorMessage="Please enter percentage." >
</asp:RequiredFieldValidator>                    
<asp:CompareValidator ID="cv1" runat="server" ControlToValidate="txtPerc"
        Text="*" ErrorMessage="Please enter integer value only (this period)." 
        Operator="DataTypeCheck" Type="Integer">
</asp:CompareValidator>

Number of Attemps:
<asp:TextBox ID="txtAttempt" runat="server" Columns="4" MaxLength="3" Width="30px" >
</asp:TextBox>
<asp:CompareValidator ID="cv2" runat="server"
    ControlToValidate="txtAttempt" 
	Text="*" ErrorMessage="Number of Attempts must be greater than or equal 5" 
    Operator="GreaterThanEqual" ValueToCompare="5">
</asp:CompareValidator>