String.Empty vs String. Length: And why String.IsNullOrEmpty

String.Empty vs String. Length: And why String.IsNullOrEmpty

Comparing against String.Length == 0 is faster.

Reason:

· Length is stored and need not to be calculated.

· Numeric operations are in itself faster than String

Though it is faster, it will throw an exception in case the string is null.

Input	String.Length Results
Null	Format Exception
Empty string (“”)	0

So overall better is String.IsNullOrEmpty(someString). It safely works as below.

· On Null strings as no exception is thrown

· On Empty strings as no object object instance is created. See Post.

Reference: http://www.velocityreviews.com/forums/t101572-stringlenght-vs-stringempty.html

Thanks & Regards,

Arun Manglick || Senior Tech Lead