private void Form1_Load(object sender, EventArgs e) { if (!IsWin7()) { Application.Exit(); } } bool IsWin7() { return Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor == 1; } bool IsWinVista() { return Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor == 0; }
其它一些Windows系统：
Windows Server 2008 R2
Major=6
Minor=1
Windows Server 2008
Major=6
Minor=0
Windows Server 2003
Major=5
Minor=2
Windows XP
Major=5
Minor=1
Windows 2000
Major=5
Minor=0
Windows NT4
Major=4
Minor=0
Windows ME
Major=4
Minor=90
Windows 98
Major=4
Minor=10
原文：http://www.cnblogs.com/eastson/p/4205118.html