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Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.
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Email Me (Tim Gaunt)
© 2009 Tim Gaunt.
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Type System.FormatExceptionMessage Exception of type 'System.Web.HttpUnhandledException' was thrown. StackTraceat System.Text.StringBuilder.FormatError() at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args) at System.String.Format(IFormatProvider provider, String format, Object[] args) Error Line 0
Just got that message (or at most "Exception of type 'System.Web.HttpUnhandledException' was thrown")? Puzzled? I was the first time I got it, I've been meaning to post about it for quite some time now so seeing as I got it again today I took the hint.
The error is horrifingly obvious when you know about it, in short, you've no doubt got some code that looks like this:
Can you spot it now? Notice your style declaration is using the curly brackets? Basically String.Format is interpreting that as a placeholder i.e. {0} and is throwing a wobbly.
The solution is simple too, just replace all opening/closing brackets with two i.e:
I hope that helps someone out there :)
P.S. Watch out for methods that use String.Format as they may catch you out in the same way -i.e. Subject of System.Net.Mail.MailMessage
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