C# 判断操作系统类型

/// <summary>

/// Gets a value indicating if the process is running in 64 bit environment.

/// </summary>

public static unsafe bool IsRunningOn64Bit

{

get { return (sizeof(IntPtr) == sizeof(long)); }

}

/// <summary>

/// Gets a value indicating if the operating system is a Windows 2000 or a newer one.

/// </summary>

public static bool IsWindows2000OrNewer

{

get { return (Environment.OSVersion.Platform == PlatformID.Win32NT) && (Environment.OSVersion.Version.Major >= 5); }

}

/// <summary>

/// Gets a value indicating if the operating system is a Windows XP or a newer one.

/// </summary>

public static bool IsWindowsXpOrNewer

{

get

{

return

(Environment.OSVersion.Platform == PlatformID.Win32NT) &&

(

(Environment.OSVersion.Version.Major >= 6) ||

(

(Environment.OSVersion.Version.Major == 5) &&

(Environment.OSVersion.Version.Minor >= 1)

)

);

}

}

/// <summary>

/// Gets a value indicating if the operating system is a Windows Vista or a newer one.

/// </summary>

public static bool IsWindowsVistaOrNewer

{

get { return (Environment.OSVersion.Platform == PlatformID.Win32NT) && (Environment.OSVersion.Version.Major >= 6); }

}

编译项目：“可编译不安全代码”属性设置为true

方法如下：项目属性对话框->配置属性->生成->允许不安全代码块 设为"true\"