EventHandler to get HDMI connectivity in windows application-CodePudding

I am looking for event handler to get the information when HDMI is connected or disconnected using c#/WPF like how myNetworkAvailabilityChangeHandler is used to detect when internet gots disconnected or connected.

CodePudding user response：

There is no direct answer to this but you can use the SystemEvents to achieve this.

Code in C# :

main()
{
SystemEvents.DisplaySettingsChanged  = new 
EventHandler(SystemEvents_DisplaySettingsChanged); 
}       
private void SystemEvents_DisplaySettingsChanged(object sender, EventArgs e)
    {
        int HDMI_Monitors = 0;
        ManagementClass mClass = new ManagementClass(@"\\localhost\ROOT\WMI:WmiMonitorConnectionParams");
        foreach (ManagementObject mObject in mClass.GetInstances())
        {
            var ss = mObject["VideoOutputTechnology"];
            if(ss.ToString().StartsWith("5"))
            {
                int HDMIport = Convert.ToInt32(ss);
                if (HDMIport == 5)
                {
                    HDMI_Monitors  = 1;
                }
            }
         }
    }

You can use the model class to keep on updating the HDMI status. So every time your HDMI will connect or disconnect SystemEvents_DisplaySettingsChanged will trigger and then it will check the HDMI connection.