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Member Property (Delphi and C# Cross Reference Guide)

By Mike Prestwood

Delphi versus C#: A side by side comparison between Delphi and C#.

 
OOP Basics
 

Some languages support object-based concepts such as Paradox, Access, and VB Classic. Other languages have OO extensions and fully support object orientation in a hybrid fashion (such as C++ and Dephi for Win32). Finally, some lanages such as C#, VB.Net, Prism, and Java are entirely written in OO. Meaning, every line of code written must occur within a class).

Member Property

[Other Languages] 
Delphi:   property..read..write

Delphi uses a special property keyword to both get and set the values of properties. The read and write keywords are used to get and set the value of the property directly or through an accessor method. For a read-only property, leave out the write portion of the declaration.

You can give properties any visibility you wish (private, protected, etc). It is common in Delphi to start member fields with "F" ("FName" in our example) and drop the "F" with properties that manage member fields ("Name" in our example).

Syntax Example:
TCyborg = class(TObject)
private
  FCName: String;
public
  property CyborgName: String read FCName write FCName;
end;
C#:   no (), get, set

In C#, parens indicate a method and the lack of parens indicate a property. You use special get and set methods to both get and set the values of properties.

C# 3.0 introduced auto-implemented properties for use when no additional logic is required.

pulic int VendorID {get; set;}

For a read-only property, leave out the set method.

The value keyword is used to refer to the member field. Properties can make use of any of the access modifiers (private, protected, etc). It is common to use a lowercase member names for member fields ("name" in our example) and uppercase properties to manage member fields ("Name" in our example).

Syntax Example:
public class Cyborg : System.Object
{
  private string cyborgName;
 
  public string CyborgName
  {
  get {return cyborgName;}
  set {cyborgName = value;}
  }

}













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