this.

Question

''this.' what is this command used for?

Munesh Sharma · Answer

It indicates the current instance. for example you go on following link http://www.dotnetperls.com/this

Nilesh Jadav · Answer

hey Julian ! The keyword "this" in C# is used to access the field variables. All the field variables must be accessed using "this" keyword. It is useful when the field variable and the local variables of a method have same name. In the above case local variables overrides field variables and field variables are no more visible inside the method. So this can be used to refer field variables to make visible inside method. class Demo { int a=2,b=10; public void Get() { int a=23,b=34; Console.WriteLine("a={0} b={1}",this.a,this.b); Console.WriteLine("It is the class variable"); Console.WriteLine("Now the local variables are:"); Console.WriteLine("a={0} b={1}",a,b); } } class MainClass { static void Main(string args[]) { Demo d= new Demo(); d.Get(); } } output: a=2 b=10 It is the class variable Now the local variables are: a=23 b=34 When we write this.a and this.b, it will refer to the field variables. But when we write only a and b it refers to the local variables of the method Get(). As the field variable and local variables have the same name we have to use the this keyword. We can't access a field variable without this keyword in C#. this always refer to the members of same class. Hope this works !

Upendra Pratap Shahi · Answer

1- The "this" keyword refers to the class which you are currently writing code in it. I mainly use it to distinct between method parameters and class fields. For example, let's assume you have the following class: Hide Copy Code public class Person { string name = " " ; // Field "name" in class Person // Constructor of the Person class, takes the name of the Person // as argument public Person ( string name) { // Assign the value of the constructor argument "name" to the field "name" this .name = name; // If you'd miss out the "this" here (name = name;) you would just assign the // constructor argument to itself and the field "name" of the // Person class would keep its value "". } } 2- Depending on where you r using it ,it has different meanings:- 1.Reference to current instance of class 2.Call another constructor from a constructor in same class. 3.Declare indexer Below example covers above 3 Hide Copy Code class abc { string x; // class member public abc( string x) { // referring to current instance this .x=x; // ("this.x" refers to class member) } // calling another constructor public abc(): this ( " xyz" ) // calls abc(string x) before abc() { } // declaring an indexer public int this [ int index] { get { return x[index];} set {x[index]=value;} } 4.also used in Extension methods

Rajeesh Menoth · Answer

Hi, It is a reference to the current object. There are several usages of this keyword in C#. To qualify members hidden by similar name To have an object pass itself as a parameter to other methods To have an object return itself from a method To declare indexers To declare extension methods To pass parameters between constructors To internally reassign value type (struct) value. To invoke an extension method on the current instance To cast itself to another type To chain constructors defined in the same class More Details : http://stackoverflow.com/questions/23250/when-do-you-use-the-this-keyword

Bhushan Bhasme · Answer

when You Are calling any method usng object of class then this pointer gets automatically passed.so you can access the datamember of class using this keyword..

Pankaj Kumar Choudhary · Answer

this is a type of pointer that hold the reference of current object of the class

Debendra Dash · Answer

this keyword always point to a current object of a class.

Marc · Answer

"this" is used to assign attributes to an object. Normally when your inheriting from a base object this is used as the attributes from that base model, which in turn can be overridden. For more details look here.. https://msdn.microsoft.com/en-us/library/dk1507sz.aspx

this.

Answers (8)