<asp:RegularExpressionValidator ID="rev" runat="server" ControlToValidate="txtDesignation" Display="Dynamic" Text="!" ForeColor="Red" ErrorMessage="Might be Alphanumeric & First character must be a letter!" BackColor="Yellow" ValidationExpression="^[a-zA-Z]\S-$" ValidationGroup="insert"/>
^[a-zA-Z][a-zA-Z\s\-]*$
string regexp = @"^[a-zA-Z][\w\s-]*";
var
This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)