Code: Select all

private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Text = "-1";
            _handle = ps3000_open_unit();
            textBox1.Text = _handle.ToString();
            GetInfo(A);
            ps3000_close_unit(_handle);
            textBox3.Text = A.ToString();
        }
        private string GetInfo(InfoType info)
        {
            StringBuilder s = new StringBuilder(_NUM_UNIT_INFO_CHARS);

            
            ps3000_get_unit_info(_handle, s, _NUM_UNIT_INFO_CHARS, info);
            textBox2.Text = s.ToString();
            return s.ToString();
        }

Code: Select all

MessageBox.Show(GetInfo(InfoType.UsbVersion));

Code: Select all

GetInfo(InfoType.UsbVersion);