我曾经在delphi中这样做,即同时将对象和项目添加到列表框:
function TMainForm.JvHidDeviceController1Enumerate(HidDev: TJvHidDevice;
const Idx: Integer): Boolean;
var
N: Integer;
Dev: TJvHidDevice;
begin
VID := JvValidateEdit1.Value;
PID := JvValidateEdit2.Value;
// MessageDlg(IntToStr(DeviceRadioGroup.ItemIndex), mtInformation, mbOKCancel, 0);
If (HidDev.Attributes.VendorID = VID) And
(HidDev.Attributes.ProductID = PID) Then
begin
N := ListBox1.Items.Add('dsn: ' + HidDev.SerialNumber);
JvHidDeviceController1.CheckOutByIndex(Dev, Idx);
ListBox1.Items.Objects[N] := Dev;
DeviceMemo.Lines.Append(HidDev.SerialNumber +
' : connected(enumerated) - ' + (TimeToStr(Now)));
InfoBtn.Enabled := true;
WriteBtn.Enabled := true;
end;
Result := true;
end;
我正在向 Mike 起诉 HIDLibrary,并且我有多个设备,每个设备都有不同的序列号,我需要添加到列表框中,问题是我不知道是否可以将对象添加到列表框和在 C# 中以不同的文本显示它们,就像我以前在 delphi 中那样,当我将 HidDevice 对象添加到列表框时,默认文本显示设备的路径,而我只希望显示 serialNo。我提取序列号。每个有效的 HID 设备,并在一行中,我使用添加该序列号产生的索引将其插入到 AllValidHIDDevices。到列表框,以便每个 HID 设备都绑定到其序列号。当我点击序列号时,我实际上是在使用该序列号软件快照检索 HID 设备
HidDevice CurrentHIDDevice;
List<HidDevice> AllValidHIDDevices = new List<HidDevice>();
IEnumerable<HidDevice> USBDevices;
private void timer1_Tick(object sender, EventArgs e)
{
AllValidHIDDevices.Clear();
listBox1.Items.Clear();
USBDevices = HidDevices.Enumerate(0x0483);
foreach (HidDevice validHIDDevice in USBDevices.Where(x => x.Attributes.ProductHexId == "0xAB12"))
{
byte[] serialNo;
validHIDDevice.Inserted += deviceInserted;
validHIDDevice.Removed += deviceRemoved;
validHIDDevice.MonitorDeviceEvents = true;
if (validHIDDevice.IsConnected)
{
timer1.Stop();
button1.Enabled = true;
validHIDDevice.ReadSerialNumber(out serialNo);
AllValidHIDDevices.Insert(listBox1.Items.Add("Serial Number: " + Encoding.Unicode.GetString(serialNo)), validHIDDevice);
}
}
if (listBox1.Items.Count > 0)
{
listBox1.SelectedIndex = 0;
CurrentHIDDevice = AllValidHIDDevices[listBox1.SelectedIndex];
}
}
private void deviceInserted()
{
this.InvokeEx(x => x.toolStripStatusLabel1.Text = listBox1.Items.Count.ToString() + " device(s) attached");
}
private void deviceRemoved()
{
foreach (HidDevice validHIDDevice in AllValidHIDDevices)
{
if (validHIDDevice.IsOpen)
validHIDDevice.CloseDevice();
validHIDDevice.Dispose();
}
this.InvokeEx(x => x.toolStripStatusLabel1.Text = "No device(s) attached");
this.InvokeEx(x => x.listBox1.Items.Clear());
this.InvokeEx(x => x.button1.Enabled = false);
this.InvokeEx(x => x.timer1.Start());
}
添加项目后,我只需单击它以选择它并与之交互:
private void listBox1_Click(object sender, EventArgs e)
{
try
{
if (listBox1.Items.Count > 0 && listBox1.SelectedIndex >= 0)
CurrentHIDDevice = AllValidHIDDevices[listBox1.SelectedIndex];
}
catch
{
MessageBox.Show("Selected item is not a USB device!");
}
}