A Programmer's Guide to C# 5.0, 4th Edition

CHAPTER 12

Variable Scoping and Definite Assignment

In C#, local variables must be given names that allow all variables to be uniquely identified throughout the method. Consider the following:

using System;class MyObject{    public MyObject(int x)    {       x = x;    }    int x;}

Since the compiler looks up parameters before it looks up member variables, the constructor in this example does not do anything useful; it copies the value of parameter x to parameter x.¹ You can fix this by adding this. to the front of the name that you want to refer to the member variable.²

using System;class MyObject{    public MyObject(int x)    {       this.x ...