C# this Keyword

Syntax

The keyword this is used to refer to the current instance of the class. The syntax for using this is as follows:

this.memberVariable = value;
this.MethodName();

Example

class Person
{
    private string name;
 
    public Person(string name)
    {
        this.name = name;
    }

    public void PrintName()
    {
        Console.WriteLine("My name is {0}.", this.name);
    }
}

Output

Person person = new Person("John");
person.PrintName(); // Output: My name is John.

Explanation

In a class, there are two types of variables: class-level variables (or fields), and method-level variables (or parameters). The this keyword refers to the current instance of the class, and is used to differentiate between the class-level variables and the method-level variables.

In the example above, this.name refers to the class-level variable name, while name in the constructor refers to the method-level variable name. this is commonly used in constructors to initialize class-level variables.

Use

The this keyword is used to refer to the current instance of the class, and is typically used to access class-level variables or methods. It is also commonly used in constructors to initialize instance-specific variables.

Important Points

• The this keyword is used to refer to the current instance of the class.
• It is typically used to access class-level variables or methods.
• this is commonly used in constructors to initialize instance-specific variables.
• It is also used to differentiate between class-level and method-level variables.

Summary

The this keyword in C# is a powerful tool for working with class instances and accessing class-level variables and methods. It is commonly used in constructors to initialize instance-specific variables, and is a key part of creating well-designed, object-oriented C# code.