Complex.Inequality Operator (Complex, Complex)
Note 

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Returns a value that indicates whether two complex numbers are not equal.
Assembly: System.Numerics (in System.Numerics.dll)
Parameters
 left

Type:
System.Numerics.Complex
The first value to compare.
 right

Type:
System.Numerics.Complex
The second value to compare.
The Equality method defines the operation of the inequality operator for complex numbers. It enables code such as the following:
Languages that do not support custom operators can test for inequality by calling the Equals(Complex) method and reversing its value.
Note that, because of differences in precision, two complex numbers that are apparently equivalent can be considered unequal. One possible workaround is to implement a comparison method that returns true only if the difference between the two real and imaginary parts of the complex numbers exceeds a certain threshold (such as .01% of the value of the real or imaginary component of one of the complex numbers). For more information, see the Equals(Complex) method.
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone
Available since 8.1