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Eigenschaften und Zugriffsmodifizierer

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Posts: 1524
Nickname: nitronic
Registered: Jul, 2006

Norbert Eder works as a software architect.
Eigenschaften und Zugriffsmodifizierer Posted: Jan 12, 2007 1:45 PM
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Original Post: Eigenschaften und Zugriffsmodifizierer
Feed Title: Norbert Eder - Living .NET
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Feed Description: Copyright (c)2005, 2006 by Norbert Eder
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Man nehme folgendes Interface:
Interface

public interface IPerson
{
string Firstname { get; set; }
string Lastname { get; set; }
DateTime Birthday { get; }
}

Dieses Interface beschreibt, dass die Eigenschaft Birthday nur gelesen werden darf, ein Setzen ist nicht m��glich. Um dies aber in der Assembly zu erlauben, in der sichi auch das Interface befindet kann folgendes definiert werden:

public class Person : IPerson
{
private string _firstname = null;
private string _lastname = null;
private DateTime _birthday;

public string Firstname
{
get { return this._firstname; }
set { this._firstname = value; }
}

public string Lastname
{
get { return this._lastname; }
set { this._lastname = value; }
}

public DateTime Birthday
{
get { return this._birthday; }
internal set { this._birthday = value; }
}
}

Der internal Zugriffsmodifizierer sorgt daf��r, dass der Setter in derselben Assembly aufgerufen werden kann. Dies ist in vielen F��llen sehr hilfreich.

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