define OS constant for compilation : undef « Preprocessing Directives « C# / CSharp Tutorial

Home
C# / CSharp Tutorial
1.Language Basics
2.Data Type
3.Operator
4.Statement
5.String
6.struct
7.Class
8.Operator Overload
9.delegate
10.Attribute
11.Data Structure
12.Assembly
13.Date Time
14.Development
15.File Directory Stream
16.Preprocessing Directives
17.Regular Expression
18.Generic
19.Reflection
20.Thread
21.I18N Internationalization
22.LINQ
23.GUI Windows Forms
24.Windows Presentation Foundation
25.Windows Communication Foundation
26.Workflow
27.2D
28.Design Patterns
29.Windows
30.XML
31.XML LINQ
32.ADO.Net
33.Network
34.Directory Services
35.Security
36.unsafe
C# / C Sharp
C# / C Sharp by API
C# / CSharp Open Source
C# / CSharp Tutorial » Preprocessing Directives » undef 
16.4.2.define OS constant for compilation
#define win2000
#define release
#undef win98 

using System;
using System.Diagnostics;

class MainClass
{
    [Conditional("DEBUG")]
    public static void DumpState()
    {
        Console.WriteLine("Dump some state...");
    }
    public static void Main()
    {
       string platformName;
       #if winXP         //Compiling for Windows XP
           platformName = "Microsoft Windows XP";
       #elif win2000     // Compiling for Windows 2000
           platformName = "Microsoft Windows 2000";
       #elif winNT       // Compiling for Windows NT
           platformName = "Microsoft Windows NT";
       #elif win98       // Compiling for Windows 98
           platformName = "Microsoft Windows 98";
       #else              // Unknown platform specified
           platformName = "Unknown";
       #endif
       Console.WriteLine(platformName);
       // Call the conditional DumpState method
       DumpState();
    }
}
16.4.undef
16.4.1.Use #define and #undef to control the program logic
16.4.2.define OS constant for compilation
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.