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// Make a Motorcycle with a rider named Tiny?



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[book] [en] Pro C# 2008 and the NET 3.5 Platform Fourth Edition

// Make a Motorcycle with a rider named Tiny?

Motorcycle c = new Motorcycle(5);

c.SetDriverName("Tiny");

c.PopAWheely();

Console.WriteLine("Rider name is {0}", c.name); // Prints an empty name value!

C H A P T E R   5  



D E F I N I N G   E N C A P S U L AT E D   C L A S S  T Y P E S



147

8849CH05.qxd  10/22/07  1:34 PM  Page 147




The problem is that the implementation of SetDriverName() is assigning the incoming parame-

ter 


back to itself given that the compiler assumes name is referring to the variable currently in the

method scope rather than the name field at the class scope. To inform the compiler that you wish to

set the current object’s name data field to the incoming name parameter, simply use this to resolve

the ambiguity:

public void SetDriverName(string name)

{ this.name = name; }

Do understand that if there is no ambiguity, you are not required to make use of the this key-

word when a class wishes to access its own data or members. For example, if we rename the string

data member to driverName, the use of this is optional as there is no longer a scope ambiguity:

class Motorcycle

{

public int driverIntensity;



public string driverName;

public void SetDriverName(string name)

{


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