Question

我有一个ObservableCollection<string>的DiscoveredHosts。 sourceupdated事件未被调用。谁知道为什么？

<ComboBox Name="DiscoveredHostsComboBox" VerticalAlignment="Center" Grid.Column="0"
    HorizontalAlignment="Center" MinWidth="100px" ItemsSource="{Binding Path=
    DiscoveredHosts}" SourceUpdated="DiscoveredHostsComboBox_SourceUpdated" />

public void GetDomainHosts()
{
    DiscoveredHosts.Clear();

    var adapters = NetworkInterface.GetAllNetworkInterfaces();

    if (Config.Debug)
    {
        DiscoveredHosts.Add("192.168.73.11");
        DiscoveredHosts.Add("192.168.73.14");
    }

    foreach (var properties in adapters.Select(adapter => adapter.GetIPProperties()))
    {
        if (properties.DnsSuffix != "" && !DiscoveredHosts.Contains(
properties.DnsSuffix))
            DiscoveredHosts.Add(properties.DnsSuffix);

        if (properties.DnsAddresses.Count <= 0) continue;

        foreach (var host in properties.DnsAddresses.Where(host => !DiscoveredHosts.
Any(a => a == host.ToString())))
            DiscoveredHosts.Add(host.ToString());
    }

    OnPropertyChanged("DiscoveredHosts");
}

Answer 1

请将NotifyOnSourceUpdated设置为true，以便触发SourceUpdated事件：

<ComboBox Name="DiscoveredHostsComboBox" VerticalAlignment="Center" Grid.Column="0" HorizontalAlignment="Center" MinWidth="100px"
    ItemsSource="{Binding Path=DiscoveredHosts, NotifyOnSourceUpdated=True}"
    SourceUpdated="DiscoveredHostsComboBox_SourceUpdated" />

sourceupdated事件没有解雇

1 个答案: