>>>HI,
>>>May I know any guideline to decide when to throw exception instead of return boolean from method, especially in business rules checking?
>>>
>>>Thank you
>>
>>FWIW, I tend to disagree with Mike on this one. These are more to my thinking:
>>http://www.codeproject.com/KB/dotnet/When_to_use_exceptions.aspx
>>http://www.guidanceshare.com/wiki/.NET_2.0_Performance_Guidelines_-_Exception_Management
>
>That is why they have added TryGetValue() to the Dictionary class
>
>http://msdn.microsoft.com/en-us/library/bb347013.aspx - see under remarks

Yep. Same with TryParse().....