// stream read/write ======================================================
internal void Read(BinaryReader br)
{
devices.Clear();
Int32 count = br.ReadInt32();
for (Int32 i = 0; i < count; ++i)
{
Device device = new Device();
device.Read(br);
devices.Add(device);
}
}
// scanning =======================================================
protected void ScanDevices(ArrayList devices, String name, String[] properties)
{
String className = CommonStrings.WIN32_ + name;
ManagementClass mc = new ManagementClass(className);
ManagementObjectCollection objects = mc.GetInstances();
foreach (ManagementObject mo in objects)
{
Device device = new Device();
device.Name = name;
ScanDevice(device, mo, properties);
devices.Add(device);
}
}
protected bool IsDeviceEqual(Device d1, Device d2)
{
bool result = false;
if (d1.Name == d2.Name)
{
result = true;
foreach (DictionaryEntry de in d1.Properties)
{
Object name = de.Key;
Object value = de.Value;
if (!value.Equals(d2.Properties[name]))
{
result = false;
break;
}
}
}
return result;
}
protected void ScanDevice(Device device, ManagementObject mo, String[] properties)
{
for (int i = 0; i < properties.Length; ++i)
{
String name = properties[i];
String value = String.Empty;
Object obj = mo[name];
if (obj != null)
{
value = obj.ToString();
}
device.Properties[name] = value;
}
}
protected Device FindMatchingDevice(ArrayList devices, Device device)
{
Device same = null;
foreach (Device d in devices)
{
if ( IsDeviceEqual(device, d) )
{
same = d;
break;
}
}
return same;
}