Using string.Equals to determine if a string is empty is significantly slower than using string.IsNullOrEmpty() or
checking for string.Length == 0. string.IsNullOrEmpty() is both clear and concise, and therefore preferred to laborious,
error-prone, manual null- and emptiness-checking.
Noncompliant code example
"".Equals(name); // Noncompliant
!name.Equals(""); // Noncompliant
name.Equals(string.Empty); // Noncompliant
Compliant solution
name != null && name.Length > 0 // Compliant but more error prone
!string.IsNullOrEmpty(name)
string.IsNullOrEmpty(name)
