=Difference between these two( & String.Empty)

Question

=>In the past I always used  everywhere for empty string in my code without a problem. =>Now do you think I should use String.Empty instead of  (at all times) ? =>Which do you find easier to read & why?

Vulpes · Answer

String.Empty is a read-only static field in the System.String class which is set to the empty string . The assignment takes place when a string is first referenced in your program. Consequently there's virtually no difference in using this field or the empty string  directly and personally I nearly always use the latter as it's easier to write. Note though that if you're testing whether a string is empty or not then it's more performant to check whether the Length property is zero. So instead of this: if (s == String.Empty) // or this if (s == ) // this is quicker if (s.Length == 0) In practice of course unless you're doing thousands of such tests the performance improvement will be negligible.

=>Difference between these two( "" & String.Empty)