public static List <EdidMonitor> GetMonitorList()
{
List <EdidMonitor> monitorList = new List <EdidMonitor>();
try
{
ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\WMI", "SELECT * FROM WmiMonitorID");
foreach (ManagementObject queryObj in searcher.Get())
{
EdidMonitor monitorInfo = new EdidMonitor();
Debug.WriteLine("Active: {0}", queryObj["Active"]);
monitorInfo.Active = (bool)queryObj["Active"];
Debug.WriteLine("InstanceName: {0}", queryObj["InstanceName"]);
monitorInfo.InstanceName = (string)queryObj["InstanceName"];
string name = convertUIntToString((UInt16[])queryObj["UserFriendlyName"]);
Debug.WriteLine("UserFriendlyName: " + name);
monitorInfo.Name = name;
string PNP = queryObj["InstanceName"].ToString();
PNP = PNP.Substring(0, PNP.Length - 2); // remove _0
if (PNP != null && PNP.Length > 0)
{
string registryPath = "SYSTEM\\CurrentControlSet\\Enum\\" + PNP + "\\" + "Device Parameters\\";
Debug.WriteLine("Registry path: " + registryPath);
RegistryKey regKey = Registry.LocalMachine.OpenSubKey(registryPath, false);
if (regKey != null)
{
if (regKey.GetValueKind("edid") == RegistryValueKind.Binary)
{
Debug.WriteLine("read edid");
byte[] edid = (byte[])regKey.GetValue("edid");
byte sum = 0;
foreach (byte b in edid)
{
sum += b;
}
Debug.WriteLine("EDID length: {0}", edid.Length);
Debug.WriteLine("EDID sum: {0}", sum);
if (edid.Length == 128 && sum == 0) //We have a valid EDID
{
monitorInfo.EDID = edid;
Debug.WriteLine("Monitor width = " + monitorInfo.Width + ", height=" + monitorInfo.Height);
monitorList.Add(monitorInfo);
}
}
regKey.Close();
}
}
}
}
catch (ManagementException e)
{
Console.WriteLine("An error occurred while querying for WMI data: " + e.Message);
}
return(monitorList);
}
private void monitors_combobox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
ComboBox cb = (ComboBox)sender;
this.selectedMonitor = (EdidMonitor)cb.SelectedItem;
this.slider.Value = inchesToSlider(this.selectedMonitor.Inches);
}
public static List<EdidMonitor> GetMonitorList()
{
List<EdidMonitor> monitorList = new List<EdidMonitor>();
try
{
ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\WMI", "SELECT * FROM WmiMonitorID");
foreach (ManagementObject queryObj in searcher.Get())
{
EdidMonitor monitorInfo = new EdidMonitor();
Debug.WriteLine("Active: {0}", queryObj["Active"]);
monitorInfo.Active = (bool)queryObj["Active"];
Debug.WriteLine("InstanceName: {0}", queryObj["InstanceName"]);
monitorInfo.InstanceName = (string)queryObj["InstanceName"];
string name = convertUIntToString((UInt16[])queryObj["UserFriendlyName"]);
Debug.WriteLine("UserFriendlyName: " + name);
monitorInfo.Name = name;
string PNP = queryObj["InstanceName"].ToString();
PNP = PNP.Substring(0, PNP.Length - 2); // remove _0
if (PNP != null && PNP.Length > 0)
{
string registryPath = "SYSTEM\\CurrentControlSet\\Enum\\" + PNP + "\\" + "Device Parameters\\";
Debug.WriteLine("Registry path: " + registryPath);
RegistryKey regKey = Registry.LocalMachine.OpenSubKey(registryPath, false);
if (regKey != null)
{
if (regKey.GetValueKind("edid") == RegistryValueKind.Binary)
{
Debug.WriteLine("read edid");
byte[] edid = (byte[])regKey.GetValue("edid");
byte sum = 0;
foreach(byte b in edid)
{
sum += b;
}
Debug.WriteLine("EDID length: {0}", edid.Length);
Debug.WriteLine("EDID sum: {0}", sum);
if(edid.Length == 128 && sum == 0) //We have a valid EDID
{
monitorInfo.EDID = edid;
Debug.WriteLine("Monitor width = " + monitorInfo.Width + ", height=" + monitorInfo.Height);
monitorList.Add(monitorInfo);
}
}
regKey.Close();
}
}
}
}
catch (ManagementException e)
{
Console.WriteLine("An error occurred while querying for WMI data: " + e.Message);
}
return monitorList;
}
