{"id":508,"date":"2022-01-10T16:37:37","date_gmt":"2022-01-10T09:37:37","guid":{"rendered":"https:\/\/csharptutorial.net\/?page_id=508"},"modified":"2022-06-03T15:00:38","modified_gmt":"2022-06-03T08:00:38","slug":"csharp-static-method","status":"publish","type":"page","link":"https:\/\/www.csharptutorial.net\/csharp-tutorial\/csharp-static-method\/","title":{"rendered":"C# Static Methods"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn about the C# static methods and how to use them effectively.<\/p>\n\n\n\n

Introduction to the C# static methods<\/h2>\n\n\n\n

To define a method static, you use the static<\/code> keyword with the following syntax:<\/p>\n\n\n

class<\/span> MyClass<\/span>\n<\/span>{\n    public<\/span> static<\/span> type MyStaticMethod(parameters)\n    {\n        \/\/ <\/span>\n    }\n}<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
In this syntax, the static<\/code> keyword denotes that the MyStaticMethod <\/code>is a static method.<\/p>\n\n\n\n
Like static fields<\/a>, static methods are bound to a class<\/a>. They are not bound to any instances of the class. Therefore, static methods cannot access instance members. However, they can access other static members.<\/p>\n\n\n\n
To call a static method inside the class, you use the static method name:<\/p>\n\n\n
MyStaticMethod(arguments<\/span>);<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
To call a static method outside the class, you use this syntax:<\/p>\n\n\n
ClassName<\/span>.MyStaticMethod<\/span>();<\/code><\/span>Code language:<\/span> CSS<\/span> (<\/span>css<\/span>)<\/span><\/small><\/pre>\n\n\n
In practice, you use define static methods in a utility class.<\/p>\n\n\n\n
C# static method examples<\/h2>\n\n\n\n
Let’s take the example of using the static method.<\/p>\n\n\n\n
First, define the UnitConverter<\/code> class that has two static methods:<\/p>\n\n\n
class<\/span> UnitConverter<\/span>\n<\/span>{\n    public<\/span> static<\/span> double KgToLbs(double weight) => weight * 2.20462262185<\/span>;\n\n    public<\/span> static<\/span> double LbsToKg(double weight) => weight * 0.45359237<\/span>;\n\n}<\/code><\/span>Code language:<\/span> PHP<\/span> (<\/span>php<\/span>)<\/span><\/small><\/pre>\n\n\n
The KgToLbs<\/code> converts weight from kilogram to pound and the LbsToKg<\/code> method converts the weight from pound to kilogram.<\/p>\n\n\n\n
Second, call the KgToLbs()<\/code> static method to convert weight from kilogram to pound:<\/p>\n\n\n
\/\/ Program.cs<\/span>\n\n\/\/ kg -> pound<\/span>\ndouble weight = UnitConverter.KgToLbs(100<\/span>);\nConsole.WriteLine($\"100kg={weight:#.00}lbs\"<\/span>);\n\n\/\/ pound -> kg<\/span>\nweight = UnitConverter.LbsToKg(100<\/span>);\nConsole.WriteLine($\"100lbs={weight:#.00}kg\"<\/span>);<\/code><\/span>Code language:<\/span> JavaScript<\/span> (<\/span>javascript<\/span>)<\/span><\/small><\/pre>\n\n\n
 Output:<\/p>\n\n\n
100kg = 220.46lbs\n100lbs = 45.36kg<\/code><\/span><\/pre>\n\n\n
Summary<\/h2>\n\n\n\n
  • Static methods are bound to classes, not instances of classes.<\/li>
  • Group related static methods in a utility class.<\/li><\/ul>\n
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