<asp:RegularExpressionValidator ID="revSubCompany" runat="server"
ControlToValidate="txtSubCompanies"
Display="Dynamic" Font-Bold="True" Font-Size="Small"
SetFocusOnError="True" ValidationGroup="SaveCompany"
ErrorMessage="Only Numbers"
ValidationExpression="\d+" >
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ErrorMessage="Only Characters!"
ValidationExpression="\w+" for username
ValidationExpression="^[a-zA-Z'\s]{1,100}$" for contact person
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Email
ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"
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