Is there some uniqueID of each computer, to differentiate one from other?

Question

I am developing a windows application in .NET Framework using C#.I want to know is there any Unique Id of each computer manufactured, let it be manufactured by any manufactrure

Answer 1

You can use motherboard serial number:

public static string GetMBSN()
{
   //Getting list of motherboards
   ManagementObjectCollection mbCol = new ManagementClass("Win32_BaseBoard").GetInstances();
   //Enumerating the list
   ManagementObjectCollection.ManagementObjectEnumerator mbEnum = mbCol.GetEnumerator();
   //Move the cursor to the first element of the list (and most probably the only one)
   mbEnum.MoveNext();
   //Getting the serial number of that specific motherboard
   return ((ManagementObject)(mbEnum.Current)).Properties["SerialNumber"].Value.ToString();
}