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USBPhysic C# example (source code sample)

Posted on : 09-02-2010 | By : rlByte Team | In : USBPhysic, rlByte News

2

 In order to get the usb storage device (external portable Hard Drives, flash/pen/key drive etc) serial number and other manufacturer information (NOT volume serial, only the unique one, the one that will not change after a format, physical one) using our USBPhysic library and C# (CSharp) you need to do the following 3 easy steps:

(1) Load USBPhysic library and declare the imported library functions :

 namespace USBPhysic_Example
{
    public partial class Form1 : Form
    {
        //load the library
        [DllImport("USBPhysic")]
        public static extern int Init(string sUser, string sRegCode);

        [DllImport("USBPhysic")]
        public static extern int GetUSBPhysicInfo(int diskIndex, int InfoType, StringBuilder pHddInfo);

        public Form1()
        {
            InitializeComponent();
        }

(2) Call the Init function to initialize the user computer usb storage devices

       private void Form1_Load(object sender, EventArgs e)
        {
            int USBDisks = Init("your reg code here", "your reg code here");

            if (USBDisks > 0)
            {
                for (int i = 0; i < USBDisks; i++)
                {
                    comboBox1.Items.Add(i);
                }
                comboBox1.SelectedIndex = 0;
            }
        }

(3) Now that you have the total hard drives count you can query for the manufacturer information passing the usb device index to the GetPhysicInfo function:

       private void button1_Click(object sender, EventArgs e)
        {
            const int nChars = 1024;
            StringBuilder Buff = new StringBuilder(nChars);
           
            //0 = Get SerialNumber
            if (GetUSBPhysicInfo(Int32.Parse(comboBox1.Items[comboBox1.SelectedIndex].ToString()), 0, Buff) > 0)
                textBox1.Text = Buff.ToString();
            else
                textBox1.Text = "n/a";

            //1 = Get product name
            if (GetUSBPhysicInfo(Int32.Parse(comboBox1.Items[comboBox1.SelectedIndex].ToString()), 1, Buff) > 0)
                textBox2.Text = Buff.ToString();
            else
                textBox2.Text = "n/a";

            //2 = Get USB Manufacturer
            if (GetUSBPhysicInfo(Int32.Parse(comboBox1.Items[comboBox1.SelectedIndex].ToString()), 2, Buff) > 0)
                textBox3.Text = Buff.ToString();
            else
                textBox3.Text = "n/a";

            //3 = Get drive letter mapped on Windows
            if (GetUSBPhysicInfo(Int32.Parse(comboBox1.Items[comboBox1.SelectedIndex].ToString()), 3, Buff) > 0)
                textBox4.Text = Buff.ToString();
            else
                textBox4.Text = "n/a";
           
        }

screenshot

  A complete project with source code example for using USBPhysic component to get usb device (hard disk, storage device pen etc) physical information with CSharp (C#) is available in the resources area of the product (here).

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