How to include double quote(") in regular expression

Question

Does any one know how to include double quote in regular expression.I wrote this regex but unable to include the double quote

<asp:RegularExpressionValidator ID="KeywordsRegex" runat="server" 
 ValidationExpression="^[+\-\!\(\)\:\^\[\]\{\}\~\*\?\&&\||].*$" 
 ControlToValidate="Keywords" ErrorMessage="Search keyword is not valid." 
 Text="*"></asp:RegularExpressionValidator> 

Answer 1

Try putting a backslash (\) followed by ". That would be proper XML.

Answer 2

have you tried escaping the double quote with a backslash?