<\/div>\n

Bu yaz\u0131mda C#’ta Abstract s\u0131n\u0131f\u0131ndan bahsedece\u011fim.OOP \u00f6nemli kavramlar\u0131ndan birini te\u015fkil etmektedir.\u015eimdi gelin bu yap\u0131y\u0131 inceleyelim.
\n
\n\u00d6ncelikle abstract kavram\u0131n\u0131n ve abstract s\u0131n\u0131flar\u0131n temel \u00f6zelliklerinden bahsetmek istiyorum.<\/p>\n

Bir Base Classta var olan metod ya da propertynin i\u015fleyi\u015fi,kal\u0131t\u0131m alan s\u0131n\u0131flarda ihtiyaca g\u00f6re de\u011fi\u015ftirilmesi gereken durumlarda kullan\u0131l\u0131r.<\/li>\n
abstract : Bu s\u0131n\u0131f i\u00e7inde abstract ile i\u015faretlenen metodlar ve propertyler bu s\u0131n\u0131ftan kal\u0131t\u0131m alan her s\u0131n\u0131fta yaz\u0131lmak ve implement(uygulanmak) zorundad\u0131rlar.<\/li>\n
abstract metod ya da propertylerin g\u00f6vdeleri tan\u0131mland\u0131klar\u0131 class i\u00e7inde yaz\u0131lmazlar.Sadece imza dedi\u011fimiz geri d\u00f6n\u00fc\u015f tipleri,isimleri ve eri\u015fim belirleyicileri tan\u0131mlanabilir.G\u00f6vdeleri kal\u0131t\u0131m alan s\u0131n\u0131fta override edilerek yaz\u0131l\u0131r.<\/li>\n
abstract elemanlar private OLAMAZLAR.<\/li>\n
\u0130\u00e7imde herhangi bir abstract yap\u0131 olan class\u0131n kendisi de abstract olmak zorundad\u0131r.<\/li>\n
abstract olan bir class\u0131n i\u00e7inde abstract olmayan yap\u0131lar da bulunabilir.<\/li>\n

abstract classlardan nesne yarat\u0131lamaz.<\/li>\n<\/ul>\n

\u015eimdi \u00f6rnek bir,”Calisma1″ ad\u0131nda, abstract s\u0131n\u0131f olu\u015ftural\u0131m.<\/p>\n

\r\n---Calisma1.cs---\r\n    abstract class Calisma1\r\n    {\r\n    }\r\n<\/pre>\n\u015eimdide abstract s\u0131n\u0131fta ne t\u00fcr metodlar ve propertyler yaz\u0131labiliyormu\u015f g\u00f6relim.<\/p>\n
\r\n---Calisma1.cs---\r\n    abstract class Calisma1\r\n    {\r\n        public void Deneme()\r\n        { }\r\n\/\/abstract olmayan metodlar yaz\u0131labilir.\r\n        public abstract void Deneme2();\r\n\/*abstract olan metodlar yaz\u0131labilir.Ancak dikkat edilmesi gereken bir nokta,\r\nabstract metodlar\u0131n scopelar\u0131 bu s\u0131n\u0131fta yaz\u0131lmamas\u0131 gerekiyor.Kal\u0131t\u0131m alaca\u011f\u0131\r\ns\u0131n\u0131fta override edilerek bu g\u00f6vdeleri olu\u015fturulacakt\u0131r.*\/\r\n        public string Deneme3 { get; set; }\r\n\/\/abstract olmayan propertyler yaz\u0131labilir.\r\n        public abstract int Deneme4 { get; set; }\r\n\/\/abstract propertyler yaz\u0131labilir.\r\n    }\r\n<\/pre>\n\u015eimdi yukar\u0131da olu\u015fturdu\u011fumuz “Calisma1” s\u0131n\u0131f\u0131ndan iki kal\u0131t\u0131m alan s\u0131n\u0131f yapal\u0131m.Bunlar\u0131n adlar\u0131 “Calisma2” ve “Calisma3” olsun.<\/p>\n
\r\n---Calisma2.cs---\r\n    class Calisma2 : Calisma1\r\n    {\r\n\r\n    }\r\n<\/pre>\n <\/p>\n
\r\n---Calisma3.cs---\r\n    class Calisma3 : Calisma1\r\n    {\r\n\r\n    }\r\n<\/pre>\nYukar\u0131da g\u00f6rd\u00fc\u011f\u00fcn\u00fcz “Calisma2” ve “Calisma3” s\u0131n\u0131flar\u0131 “Calisma1” s\u0131n\u0131f\u0131ndan kal\u0131t\u0131m al\u0131yorlar.E\u011fer bu halde program\u0131 derlersek hata alaca\u011f\u0131z.Yukar\u0131daki kurallar\u0131 hat\u0131rlarsan\u0131z,abstract olarak tan\u0131ml\u0131 olan s\u0131n\u0131fta abstract ifadeler varsa e\u011fer, o s\u0131n\u0131ftan kal\u0131t\u0131m alan classlarda yaz\u0131lmak ve implement(uygulanmak) zorundad\u0131rlar.\u015eimdi \u00f6ncelikle “Calisma2” s\u0131n\u0131f\u0131nda,Base Classtaki abstract ifadeli metod ya da propertyleri implement edelim.<\/p>\n
\r\n---Calisma2.cs---\r\n    class Calisma2 : Calisma1\r\n    {\r\n        public override void Deneme2()\r\n        {\r\n            MessageBox.Show("Test");\r\n        }\r\n        int deger;\r\n        public override int Deneme4\r\n        {\r\n            get\r\n            {\r\n                return deger;\r\n            }\r\n            set\r\n            {\r\n                deger = value;\r\n            }\r\n        }\r\n    }\r\n<\/pre>\nYukar\u0131da g\u00f6rd\u00fc\u011f\u00fcn\u00fcz gibi override yaparak Base Classtaki abstract ifadeli metod ve propertyleri bu s\u0131n\u0131fta tan\u0131mlad\u0131m.Bu \u015fekilde program\u0131 derledi\u011fimiz zaman,”Calisma3″ s\u0131n\u0131f\u0131nda da bu \u015fekilde abstract ifadeleri implement etmedi\u011fimizden alaca\u011f\u0131z.Yani vurgulamak istedi\u011fim nokta, abstract s\u0131n\u0131f\u0131ndaki abstract ifadeler, o s\u0131n\u0131ftan kal\u0131t\u0131m alan b\u00fct\u00fcn s\u0131n\u0131flarda implement etmek zorunday\u0131z.<\/p>\n
\r\n---Calisma3.cs---\r\n    class Calisma3 : Calisma1\r\n    {\r\n        public override void Deneme2()\r\n        {\r\n            MessageBox.Show("Test");\r\n        }\r\n        int deger;\r\n        public override int Deneme4\r\n        {\r\n            get\r\n            {\r\n                return deger;\r\n            }\r\n            set\r\n            {\r\n                deger = value;\r\n            }\r\n        }\r\n    }\r\n<\/pre>\nArt\u0131k “Calisma3” s\u0131n\u0131f\u0131nda da Base Class\u0131ndaki abstract ifadeler implement edildi.Bu \u015fekilde program\u0131m\u0131z\u0131 derlersek hi\u00e7 bir hatayla kar\u015f\u0131la\u015fmayaca\u011f\u0131z.<\/p>\n
\nDikkat !!! abstract s\u0131n\u0131flardan nesne \u00fcretemiyoruz.Ama o s\u0131n\u0131ftan referans noktas\u0131 olu\u015fturabiliyoruz.<\/p>\n","protected":false},"excerpt":{"rendered":"
Bu yaz\u0131mda C#’ta Abstract s\u0131n\u0131f\u0131ndan bahsedece\u011fim.OOP \u00f6nemli kavramlar\u0131ndan birini te\u015fkil etmektedir.\u015eimdi gelin bu yap\u0131y\u0131 inceleyelim.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[158],"class_list":["post-264","post","type-post","status-publish","format-standard","hentry","category-c-sharp-c","tag-abstract"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts\/264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/comments?post=264"}],"version-history":[{"count":0,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts\/264\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/media?parent=264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/categories?post=264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/tags?post=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}