如何从win32处理器获取处理器ID

Question

string strProcessorId = string.Empty;
SelectQuery query = new SelectQuery("Win32_processor");
ManagementObjectSearcher search = new ManagementObjectSearcher(query);

foreach (ManagementObject info in search.Get())
{
    strProcessorId = info["processorId"].ToString();
}
Console.WriteLine(strProcessorId);
Console.ReadLine();

it gives error for line

strProcessorId = info["processorId"].ToString();

error is: Object reference not set to an instance of an object.

how to remove this error

Answer 1

WMI property names are probably case-sensitive. Try:

strProcessorId = info["ProcessorId"].ToString();

It might also help to properly capitalize the name of the Win32_Processor class:

SelectQuery query = new SelectQuery("Win32_Processor");

Answer 2

try

    string strProcessorId = string.Empty;
    SelectQuery query = new SelectQuery("Win32_processor");
    ManagementObjectSearcher search = new ManagementObjectSearcher(query);

    foreach (ManagementObject info in search.Get())
    {
        strProcessorId = info["ProcessorID"].ToString();
    }
    Console.WriteLine(strProcessorId);
    Console.ReadLine();

think it was just the capital missing that meant a null was being returned