using System.Management;						
static void GetDefaultPrinter()
        {
            string strQuery = "SELECT * FROM Win32_Printer";

            ObjectQuery objectQuery = new ObjectQuery(strQuery);
            ManagementObjectSearcher query = new ManagementObjectSearcher(objectQuery);
            ManagementObjectCollection queryCollection = query.Get();

            foreach (ManagementObject managementObject in queryCollection)
            {
                PropertyDataCollection propertyDataCollection = managementObject.Properties;

                if ((bool)managementObject["Default"]) // DEFAULT PRINTER
                {
                    MessageBox.Show(managementObject["Name"].ToString());
                    Console.WriteLine(managementObject["Name"]);
                    Console.WriteLine(managementObject["Location"]);
                }
            }
        }