Are .NET string operations case sensitive?

Question

Are .NET string functions like IndexOf(\"blah\") case sensitive?

From what I remember they aren\'t, but for some reason I am seeing bugs in my app where the

Answer 1

As default they are case sensitive but most of them (if not all) including IndexOf has an overload that takes a StringComparison argument. E.g. if you pass

StringComparison.InvariantCultureIgnoreCase 

as the StringComparison argument to IndexOf it will (as the name implies) ignore case differences