我怎么能使comboBox代表连接的COM端口

Question

我的程序没有显示连接的COM端口，我的错误在哪里？

XAML

<ComboBox x:Name="comboBoxComPort" Grid.Row="0" Height="20" Width="100" SelectionChanged="ComboBox_SelectionChanged" Margin="5 3 5 3" Grid.ColumnSpan="1" Grid.Column="1"/>

C＃

private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        string[] ports = SerialPort.GetPortNames();
        comboBoxComPort.Items.Add(ports);
    }

Answer 1

您正在使用Selection_Changed -Event进行加载..在您的XAML中使用Loaded事件，如Loaded="comboBoxComPort_Loaded"

然后将代码更改为：

    private void comboBoxComPort_Loaded(object sender, RoutedEventArgs e)
    {
        string[] ports = SerialPort.GetPortNames();
        foreach (string port in ports)
            comboBoxComPort.Items.Add(port);
    }