id="lblNumeric"
Text="Enter a Number:"
AssociatedControlID="txtNumeric"
Runat="server" />
id="txtNumeric"
Runat="server" />
id="fte1"
TargetControlID="txtNumeric"
FilterType="Numbers"
Runat="server" />
id="lblProductCode"
Text="Enter a Product Code:"
AssociatedControlID="txtProductCode"
Runat="server" />
id="txtProductCode"
Runat="server" />
id="fte2"
TargetControlID="txtProductCode"
FilterType="LowercaseLetters,Custom"
FilterMode="ValidChars"
ValidChars="_!"
Runat="server" />
(A product code can contain only lower-case characters,
underscores, exclamation marks, and no spaces)