C# 判断当前系统是XP还是WIN7 .获取当前系统版本

直接提供Winform程序：

OperatingSystem os = Environment.OSVersion;
switch (os.Platform)
{
case PlatformID.Win32Windows:
switch (os.Version.Minor)
{
case 0:
label1.Text = "Windows 95 ";
break;
case 10:
if (os.Version.Revision.ToString() == "2222A ")
label1.Text = "Windows 98 第二版 ";
else
label1.Text = "Windows 98 ";
break;
case 90:
label1.Text = "Windows Me ";
break;
}
break;
case PlatformID.Win32NT:
switch (os.Version.Major)
{
case 3:
label1.Text = "Windows NT 3.51 ";
break;
case 4:
label1.Text = "Windows NT 4.0 ";
break;
case 5:
switch (os.Version.Minor)
{
case 0:
label1.Text = "Windows 200 ";
break;
case 1:
label1.Text = "Windows XP ";
break;
case 2:
label1.Text = "Windows 2003 ";
break;
}
break;
case 6:
switch (os.Version.Minor)
{
case 0:
label1.Text = "Windows Vista ";
break;
case 1:
label1.Text = "Windows 7 ";
break;
}
break;
}
break;
}

当然，大家直接可以通过OperatingSystem os = Environment.OSVersion;然后判断os.Version.Major是否是等于6，就可以判断系统是不是windows Vista以上版本

+-----------------------------------------‍------------------------------------------------------------------------------------------+
| | Windows | Windows | Windows | Windows NT | Windows | Windows | Windows | Windows |

+-----------------------------------------‍------------------------------------------------------------------------------------------+
| | 95 | 98 | Me | 4.0 | 2000 | XP | Vista | 7 |
+-----------------------------------------------------------------------------------------------------------------------------------+
| PlatformID | 1 | 1 | 1 | 2 | 2 | 2 | | |
+-----------------------------------------------------------------------------------------------------------------------------------+
| 主版本号 | 4 | 4 | 4 | 4 | 5 | 5 | 6 | 6 |
+-----------------------------------------------------------------------------------------------------------------------------------+
| 副版本号 | 0 | 10 | 90 | 0 | 0 | 1 | 0 | 1 |
+-----------------------------------------------------------------------------------------------------------------------------------+

根据上面这个表,从System.Environment中的OSversion取version比较.
XP 和 2K的Major 都是5, Minor不同,2k对应0,XP对应1.

System.Environment.OSVersion.Version.Major
System.Environment.OSVersion.Version.Minor

Version ver = System.Environment.OSVersion.Version;
string strClient = "";
if (ver.Major == 5 && ver.Minor == 1)
{
strClient = "Win XP";
}
else if (ver.Major == 6 && ver.Minor == 0)
{
strClient = "Win Vista";
}
else if (ver.Major == 6 && ver.Minor == 1)
{
strClient = "Win 7";
}
else if (ver.Major == 5 && ver.Minor == 0)
{
strClient = "Win 2000";
}
else
{
strClient = "未知";
}