WPF C#POS打印机，从下拉菜单中打开设备

我正试图用POS打印机打印一行简单的文本。目前，我没有连接实际的pos打印机，但我有microsoft pos打印机模拟器

目前我有一个combobox控件，它将列出所有找到的打印机。其想法是，在这个组合框中，我选择我想要的打印机，然后它将使用该打印机打印文本

获取所有打印机并将其添加到组合框的代码如下：

// Get available printers and add them to the combobox in the settings menu
        PosExplorer posExplorer = new PosExplorer();
        DeviceCollection printers = posExplorer.GetDevices("PosPrinter");
       for (int i = 0; i < printers.Count; i++)
        {
            settings_ComboBox_Printer.Items.Add(printers[i].ServiceObjectName);
        }

我在button click事件的for循环中遇到的错误是打印机[i]返回的是DeviceInfo对象，而不是设备本身。所以我必须收回设备，然后认领并打开它。然而，我不知道如何获取实际设备并打开它

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提前谢谢

我想出来了，你可以使用posexplorer类初始化打印机，方法是向它提供设备信息。如果其他人遇到此问题，我会更改代码，现在它对我有效：） 我还添加了一些检查，以确保打印机已准备好打印。 谢谢你的回复，节日快乐

private void ButCart_PrintOrder_Click(object sender, RoutedEventArgs e)
    {
        PosExplorer posExplorer = new PosExplorer();

        // Get connected printer devices
        DeviceCollection printers = posExplorer.GetDevices(DeviceType.PosPrinter);
        for (int i = 0; i < printers.Count; i++)
        {
            if (printers[i].ServiceObjectName == settings_ComboBox_Printer.Text)
            {
                selectedPrinter = posExplorer.CreateInstance(printers[i]) as PosPrinter;
            }
        }

        try
        {
            selectedPrinter.Open();
            if (!selectedPrinter.Claimed)
            {
                selectedPrinter.Claim(0);
                selectedPrinter.DeviceEnabled = true;
            }

            bool printerReady = true;
            if (selectedPrinter.CoverOpen)
            {
                MessageBox.Show("Printer cover is open.");
                printerReady = false;
            }
            if (selectedPrinter.PowerState == PowerState.OffOffline)
            {
                MessageBox.Show("Printer is has no power or is offline");
                printerReady = false;
            }
            if (selectedPrinter.State != ControlState.Idle)
            {
                MessageBox.Show("Printer is busy");
                printerReady = false;
            }

            if (printerReady)
            {
                string text = "test text";
                selectedPrinter.PrintNormal(PrinterStation.Receipt, text);
            }

        }
        catch (Exception ae)
        {
            MessageBox.Show("An error occured: " + ae.ToString());
        }
    }

private void ButCart\u print order\u Click（对象发送方，RoutedEventArgs e）
{
PosExplorer PosExplorer=新的PosExplorer（）；
//获取连接的打印机设备
DeviceCollection printers=posExplorer.GetDevices（DeviceType.PosPrinter）；
对于（int i=0；i

using Microsoft.PointOfService;
PosPrinter selectedPrinter;

private void ButCart_PrintOrder_Click(object sender, RoutedEventArgs e)
    {
        PosExplorer posExplorer = new PosExplorer();

        // Get connected printer devices
        DeviceCollection printers = posExplorer.GetDevices(DeviceType.PosPrinter);
        for (int i = 0; i < printers.Count; i++)
        {
            if (printers[i].ServiceObjectName == settings_ComboBox_Printer.Text)
            {
                selectedPrinter = posExplorer.CreateInstance(printers[i]) as PosPrinter;
            }
        }

        try
        {
            selectedPrinter.Open();
            if (!selectedPrinter.Claimed)
            {
                selectedPrinter.Claim(0);
                selectedPrinter.DeviceEnabled = true;
            }

            bool printerReady = true;
            if (selectedPrinter.CoverOpen)
            {
                MessageBox.Show("Printer cover is open.");
                printerReady = false;
            }
            if (selectedPrinter.PowerState == PowerState.OffOffline)
            {
                MessageBox.Show("Printer is has no power or is offline");
                printerReady = false;
            }
            if (selectedPrinter.State != ControlState.Idle)
            {
                MessageBox.Show("Printer is busy");
                printerReady = false;
            }

            if (printerReady)
            {
                string text = "test text";
                selectedPrinter.PrintNormal(PrinterStation.Receipt, text);
            }

        }
        catch (Exception ae)
        {
            MessageBox.Show("An error occured: " + ae.ToString());
        }
    }