true if the value of a is the same as the value of b; otherwise, false.
The string.op_Equality(string, string) method defines the operation of the equality operator for the string class. The operator, in turn, calls the static string.Equals(string, string) method, which performs an ordinal (case-sensitive and culture-insensitive) comparison.
The Visual Basic compiler does not resolve the equality operator as a call to the string.op_Equality(string, string) method. Instead, the equality operator wraps a call to the Microsoft.VisualBasic.CompilerServices.Operators.CompareString(string, string, bool) method.