Cause:
Static members are part of a type and non-static members are part of an instance of that type. If you want to have a shared state or a function between different instances of the same type, a static member will be helpful. This code issue informs you about an instance member that can be converted into a static member.
Here are the suggestions (hints) code issues which might improve the readability, clarity and performance of your source code.
Classes allow you to create instance members and static members. Instance members are available when an instance of the class is created and have access to the object’s data. Static members do not require an object created and can be called directly.
Static methods are useful when creating functions that are not reliant on any instance of a class. An example of the extensive use of static members is the System.Math class, which is a library of mathematical functions and constants provided by the .NET framework.
A constructor is a special class member that is executed when a new object is created. There are two types of constructors: instance constructors and static constructors. Instance constructors are used to create and initialize instances of classes or structures. A static constructor is used to initialize a class itself. A static constructor is called automatically to initialize the class before the first instance is created or any static members are invoked.
A static class can be used as a unit of organization for sets of utility functions that operate on input parameters and do not have to get or set any internal data. These functions can be accessed without creating an instance of the class. In this case, a static class can make your implementation simpler and faster because you do not have to create an object in order to call its methods.