Ref, Ref Return and Ref Local In C#

Before C# 7.0, the ref was only used to be passed as a parameter in the method. It enhanced with return it and uses it later in C# 7 using ref return and ref local. Ref: It uses to pass an argument to a method by reference. It uses in a method call and signature. Ref Return: It uses to return a value to the caller by reference. It uses in a method body and signature. Ref Local: It uses to store a value locally as a reference that caller intends to modify.