C # static and non-static classes (instance classes)

1. Static and non-static members can appear in non-static classes

usingSystem;namespaceshuzu{classDom_class { Public stringName ="Zhang San"; Private intAge ;  Public intAge//accessing private members through properties        {            Get{returnAge ;} Set{age =value;} }    }    classAClass {Static voidMain (string[] args) {Dom_class s=NewDom_class (); S.name="ABC"; S.age= the;             Console.WriteLine (S.name);            Console.WriteLine (S.age);        Console.readkey (); }    }}

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2. Static members can only appear in static classes, and object creation is not allowed

usingSystem;namespaceshuzu{Static classAClass {Static inti = the; Static voidMain (string[] args) {i= -;//accessing static MembersConsole.WriteLine (ACLASS.I);//You can also access thisConsole.WriteLine (i);        Console.readkey (); }    }}

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3. Differences on non-static and static member invocations (class name point object name) non-static (object name point member name)

usingSystem;namespaceshuzu{classDom_class { Public Static intShu = -;//access to static members    }    classAClass {Static voidMain (string[] args) {           intg= Dom_class.shu = the;//The class name. Object Name AccessConsole.WriteLine (g);        Console.readkey (); }    }}

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usingSystem;namespaceshuzu{classDom_class { Public stringName ="Zhang San";//access to non-static members        Private intAge ;  Public intAge//accessing private members through properties        {            Get{returnAge ;} Set{age =value;} }    }    classAClass {Static voidMain (string[] args) {Dom_class s=NewDom_class (); S.name="ABC";//by establishing object accessS.age = the;             Console.WriteLine (S.name);            Console.WriteLine (S.age);        Console.readkey (); }    }}

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4. When do I use static classes? Use static classes when used as a tool class

C # static and non-static classes (instance classes)