How to detect if my application is running in a virtual machine?

Question

How can I detect (.NET or Win32) if my application is running in a virtual machine?

Answer 1

public static bool isVirtualMachine()
{
    const string MICROSOFTCORPORATION = "microsoft corporation";
    const string VMWARE = "vmware"; 

    foreach (var item in new ManagementObjectSearcher("Select * from Win32_ComputerSystem").Get())
    {
        string manufacturer = item["Manufacturer"].ToString().ToLower();
        // Check the Manufacturer (eg: vmware, inc)
        if (manufacturer.Contains(MICROSOFTCORPORATION) || manufacturer.Contains(VMWARE))  
        {
            return true;
        }

        // Also, check the model (eg: VMware Virtual Platform)
        if (item["Model"] != null)
        {
            string model = item["Model"].ToString().ToLower();
            if (model.Contains(MICROSOFTCORPORATION) || model.Contains(VMWARE)) 
            {
                return true;
            }
        }
    }
    return false;
}