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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Management;     // vs2010 --> Verweis hinzufügen!
using System.Management.Instrumentation;
// ------------------------------------------------------------------------------------------------
// Prüfen, ob Tastatur vorhanden
// ------------------------------------------------------------------------------------------------
namespace DetectDevice1
{
    public partial class Form1 : Form
    {
        private bool   kbExists = false;
        private string text1 = "", text2 = "";

        public Form1()
        {
            InitializeComponent();
        }
        
        private bool DetectKeyboard()
        {
            bool exists = false;
            ManagementObjectSearcher searcher = 
                new ManagementObjectSearcher("Select Name from Win32_Keyboard");
            foreach (ManagementObject keyboard in searcher.Get())
            {
                if (!keyboard.GetPropertyValue("Name").Equals(""))
                {
                    text2 += "\nKB name:   " + keyboard.GetPropertyValue("Name");
                    exists = true;
                }
            } 
            return exists;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            text1 = "Keyboard exists:      ";
            kbExists = DetectKeyboard();
            if (kbExists) text1 += "YES";
            else          text1 += "NO";
            label1.Text = text1;
            label2.Text = text2;
        }
     }
}