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(from ci in list
where ci.Subject.Contains(emailSubject)

select ci).ToList<unreademails>();

i wort above code for search in data grid but i need to search from case Insensitive pls tell me how can i do it
Updated 11-Jun-10 0:20am

See if you can use ci.subject..IndexOf(temp,StringComparison.CurrentCultureIgnoreCase) >= 0;.
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I don't know if this will work, as I haven't tried it myself, but you could try something like
(from ci in list
where ci.Subject.ToUpper().Contains(emailSubject.ToUpper())
select ci).ToList();
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Kasunmit 11-Jun-10 6:35am    
thanx i followed this and get successfully completed ..
.NET list doesn't support explicitly setting comparer used.This means that you should work around this.You have several ways to solve the problem: in uppercase/lowercase only.
2.scan manually the list and use String.Compare instead of IList.Contains.
3.Implement proper comparer of your collection elements.You could do it by implementing IComparer or IComparable.
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