sourceupdated事件不触发 [英] sourceupdated event not firing

问题描述

我有DiscoveredHosts这是一个的ObservableCollection＆LT;字符串＆GT; 。所述sourceupdated事件不被调用。任何人都知道为什么吗？

 ＆LT;组合框名称=DiscoveredHostsComboBoxVerticalAlignment =中心Grid.Column =0
    的Horizo​​ntalAlignment =中心=了minWidth100像素的ItemsSource ={绑定路径=
    DiscoveredHosts}SourceUpdated =DiscoveredHostsComboBox_SourceUpdated/＆GT;

公共无效GetDomainHosts（）
{
    DiscoveredHosts.Clear（）;

    变种适配器= NetworkInterface.GetAllNetworkInterfaces（）;

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

    的foreach（VAR物业adapters.Select（适配器=＆GT; adapter.GetIPProperties（）））
    {
        如果（properties.DnsSuffix =＆放大器;！＆安培;！DiscoveredHosts.Contains（
properties.DnsSuffix））
            DiscoveredHosts.Add（properties.DnsSuffix）;

        如果（properties.DnsAddresses.Count＆LT; = 0）继续;

        的foreach（在properties.DnsAddresses.Where VAR主机（主机=＆GT;！DiscoveredHosts。
任何（一个= gt;一种== host.ToString（））））
            DiscoveredHosts.Add（host.ToString（））;
    }

    OnPropertyChanged（DiscoveredHosts）;
}
 

解决方案

请，设置NotifyOnSourceUpdated为true SourceUpdated事件火了：

 ＆LT;组合框名称=DiscoveredHostsComboBoxVerticalAlignment =中心Grid.Column =0的Horizo​​ntalAlignment =中心=了minWidth100像素的ItemsSource ={绑定路径= DiscoveredHosts ，NotifyOnSourceUpdated = TRUE}SourceUpdated =DiscoveredHostsComboBox_SourceUpdated/＆GT;
 

I have DiscoveredHosts which is an ObservableCollection<string>. The sourceupdated event is not being called. Anyone know why?

<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");
}

解决方案

Please, set NotifyOnSourceUpdated to true for SourceUpdated event to fire:

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

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