C# Properties (Get and Set) - W3Schools

C# also provides a way to use short-hand / automatic properties, where you do not have to define the field for the property, and you only have to write get; ... 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ThemeaningofEncapsulation,istomakesurethat"sensitive"dataishidden fromusers.Toachievethis,youmust: declarefields/variablesasprivate providepublicget andsetmethods,throughproperties,toaccessandupdatethevalueofaprivate field Properties Youlearnedfromthepreviouschapterthatprivatevariablescanonlybe accessedwithinthesameclass(anoutsideclasshasnoaccesstoit).However, sometimesweneedtoaccessthem-anditcanbedonewithproperties. Apropertyislikeacombinationofavariableandamethod,andithastwomethods:agetandasetmethod: Example classPerson { privatestringname;//field publicstringName//property { get{returnname;}//getmethod set{name=value;}//setmethod } } Exampleexplained TheNamepropertyisassociatedwiththenamefield.Itisagoodpracticetousethesamenameforboththepropertyandtheprivatefield,butwithanuppercasefirstletter. Thegetmethodreturnsthevalueofthevariablename. Thesetmethodassignsavaluetothe namevariable.Thevaluekeywordrepresentsthevalueweassigntotheproperty. Ifyoudon'tfullyunderstandit,takealookattheexamplebelow. NowwecanusetheNamepropertytoaccessandupdatetheprivatefieldofthePersonclass: Example classPerson { privatestringname;//field publicstringName//property { get{returnname;} set{name=value;} } } classProgram { staticvoidMain(string[]args) { PersonmyObj=newPerson(); myObj.Name="Liam"; Console.WriteLine(myObj.Name); } } Theoutputwillbe: Liam TryitYourself» AutomaticProperties(ShortHand) C#alsoprovidesawaytouseshort-hand/automaticproperties,whereyoudo nothavetodefinethefieldfortheproperty,andyouonlyhavetowriteget; andset;insidetheproperty. Thefollowingexamplewillproducethesameresultastheexampleabove.Theonlydifferenceisthatthereislesscode: Example Usingautomaticproperties: classPerson { publicstringName//property {get;set;} } classProgram { staticvoidMain(string[]args) { PersonmyObj=newPerson(); myObj.Name="Liam"; Console.WriteLine(myObj.Name); } } Theoutputwillbe: Liam TryitYourself» WhyEncapsulation? Bettercontrolofclassmembers(reducethepossibilityofyourself(orothers)tomessupthecode) Fieldscanbemaderead-only(ifyouonlyusethegetmethod),orwrite-only(ifyouonlyusethesetmethod) Flexible:theprogrammercanchangeonepartofthecodewithoutaffectingotherparts Increasedsecurityofdata ❮Previous Next❯ NEW WejustlaunchedW3Schoolsvideos Explorenow COLORPICKER Getcertifiedbycompletingacoursetoday! w3schoolsCERTIFIED.2022 Getstarted CODEGAME PlayGame