Csharp/C Sharp/Class Interface/This
Demonstrates using the this intrinsic variable, which allows a class instance to identify itself
<source lang="csharp"> /* C# Programming Tips & Techniques by Charles Wright, Kris Jamsa Publisher: Osborne/McGraw-Hill (December 28, 2001) ISBN: 0072193794
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// // This.cs -- Demonstrates using the this intrinsic variable, which // allows a class instance to identify itself // // Compile this program with the following command line: // C:>csc this.cs // namespace nsThis {
using System; public class ThisclsMain { static public void Main () { // Declare an array of classes clsThis [] arr = new clsThis[] { new clsThis(), new clsThis(), new clsThis(), new clsThis(), new clsThis(), new clsThis() }; Console.WriteLine ("{0} instances were created", arr[0].m_Instance); // Ask each instance in the array to identify itself foreach (clsThis inst in arr) { Console.WriteLine ("This is instance Number " + inst.Identify().Instance); } } } internal class clsThis { public clsThis () { m_Instance = ++Count; } private static int Count = 0; public int Instance { get {return (m_Instance);} } internal int m_Instance; public clsThis Identify () { // Return this instance of the class return (this); } }
}
</source>
Illustrates the use of the this object reference
<source lang="csharp"> /* Mastering Visual C# .NET by Jason Price, Mike Gunderloy Publisher: Sybex; ISBN: 0782129110
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/*
Example5_5.cs illustrates the use of the this object reference
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// declare the Car class class Car {
public int yearBuilt; public void SetYearBuilt(int yearBuilt) { // the yearBuilt parameter hides the // the yearBuilt field this.yearBuilt = yearBuilt; }
}
public class Example5_5 {
public static void Main() { // create a Car object Car myCar = new Car(); myCar.SetYearBuilt(2000); System.Console.WriteLine("myCar.yearBuilt = " + myCar.yearBuilt); }
}
</source>
Using the this Object Reference
<source lang="csharp"> public class Product {
public int yearBuilt; public void SetYearBuilt(int yearBuilt) { this.yearBuilt = yearBuilt; }
} class MainClass{
public static void Main() { Product myProduct = new Product(); myProduct.SetYearBuilt(2000); System.Console.WriteLine("myProduct.yearBuilt = " + myProduct.yearBuilt); }
}
</source>