Question

I have the following struct;

static Memory memory;

  public struct Memory
  {
      public string Name;
      public string Manufacturer;
      public string MemoryType ;
      public string Speed;
      public string DeviceLocator;
      public string Capacity;
      public string OtherInfo;
  };

I can obtain everything but the following:

    ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMemory");
         ManagementObjectCollection myobject = searcher.Get();
             foreach (ManagementObject item in myobject)
             {
                memory.OtherInfo = item["OtherIdentifyingInfo"].ToString();
             }

When i try to do the above, i get:

Object reference not set to an instance of an object.

Do i have to somehow create an instance of item["OtherIdentifyingInfo"]?

Answer 1

OtherIdentifyingInfo

Data type: string
Access type: Read-only
Additional data, beyond asset tag information, that can be used to identify a physical element. One example is bar code data associated with an element that also has an asset tag. If only bar code data is available and unique or able to be used as an element key, this property is be NULL and the bar code data is used as the class key in the tag property. This property is inherited from CIM_PhysicalElement.

You need to Check if the value is Null before you pass to string.