Abstract keyword--abstraction

Code:

1 usingSystem;2 3 namespaceconsole_test4 {5     class Program6     {7          Public Abstract classMyclas8         {9             /// <summary>Ten             ///number attribute and its implementation One             /// </summary> A             Private int_id; -  -              Public intID the             { -                 Get{return_id;} -                 Set{_id =value;} -             } +  -             /// <summary> +             ///name attribute and its implementation A             /// </summary> at             Private string_str; -  -              Public stringStr -             { -                 Get{return_str;} -                 Set{_str =value;} in             } -  to             /// <summary> +             ///abstract method, used to output information -             /// </summary> the              Public Abstract voidShowdiolg ();//abstract method to be in abstract class *         } $ Panax Notoginseng         /// <summary> -         ///inherit the drawing class the         /// </summary> +          Public classTestclass:myclas A         { the             /// <summary> +             ///overriding methods used in abstract classes for output -             /// </summary> $              Public Override voidShowdiolg () $             { -Console.WriteLine (ID +"\ n"+str); -             } the         } - Wuyi         /// <summary> the         ///Main method, master entry of the program -         /// </summary> Wu         /// <param name= "args" ></param> -         Static voidMain (string[] args) About         { $             //instantiating derived classes -TestClass TC =NewTestClass (); -  -             //instantiating an abstract class using a derived class object AMyclas MC =TC; +  the             //using abstract class objects to access numbering properties in abstract classes -Mc.id = -; $  the             //using abstract class objects to access name attributes in abstract classes theMc.str ="Kaidi"; the  the             //to invoke a method in a derived class using an abstract class object - Mc.showdiolg (); in  the Console.readkey (); the         } About     } the}

Complete.

Abstract keyword--abstraction