我有一个很大的问题.... 我有一个MainWindow.xaml。这个xaml分成不同的列和行。在左侧，我有不同的按钮。在右侧，我有我所谓的内容网格。在此内容网格中，我可以通过按下按钮打开不同的用户控件。
在其中一个用户控件中，我请求从A到B的路线。如果点被激烈地识别，路线将显示在输入屏幕下方的列表框中。
但如果两点中的一点未被准确识别，我打开一个带有两个组合框的新窗口，您必须指定并选择输入。选择起点和终点后。按下OK按钮关闭窗口，在用户控件的列表框中显示路径......但是它没有......
我的英语不是那么好，我希望你可以通过发布代码帮助我..
用户控件的代码隐藏文件：
RoutenplanungSelection rps = new RoutenplanungSelection();
public void checkStationsnamenSindEindeutig(string von, string nach, string datum, string zeit, bool abfahrt)
{
WebClient wc = new WebClient();
wc.Encoding = Encoding.UTF8;
string data = wc.DownloadString(....url);
var xe = XElement.Parse(data);
var CountOrigins = from a in xe.Descendants("itdOdv")
where a.Attribute("usage").Value == "origin"
select a.Element("itdOdvName").Elements("odvNameElem").Count();
var CountDestinations = from a in xe.Descendants("itdOdv")
where a.Attribute("usage").Value == "destination"
select a.Element("itdOdvName").Elements("odvNameElem").Count();
int countorigins = 0;
foreach (var c in CountOrigins)
countorigins = Convert.ToInt32(c);
int countdestinations = 0;
foreach (var c in CountDestinations)
countdestinations = Convert.ToInt32(c);
if (countorigins == 1 && countdestinations == 1)
{
downloadEindeutigenXml(von, nach, datum, zeit, abfahrt);
}
if (countorigins > 1 || countdestinations > 1)
{
var getAllOrigins = from a in xe.Descendants("itdOdv")
where a.Attribute("usage").Value == "origin"
select a;
var getAllDestinations = from a in xe.Descendants("itdOdv")
where a.Attribute("usage").Value == "destination"
select a;
foreach(var r in getAllOrigins)
rps.uebergebeXmlOrigins(r);
foreach (var r in getAllDestinations)
rps.uebergebeXmlDestination(r);
rps.uebergebeAllgemeineInfos(datum, zeit, abfahrt);
rps.Show();
}
}
public async void downloadEindeutigenXml(string von, string nach, string datum, string zeit, bool abfahrt)
{
WebClient wc = new WebClient();
wc.Encoding = Encoding.UTF8;
if(abfahrt)
{
this.mw = (MainWindow)Application.Current.MainWindow;
mw.progress.IsIndeterminate = false;
mw.progress.IsIndeterminate = true;
formatEindeutigeData(XElement.Parse(await wc.DownloadStringTaskAsync(
"....url")));
mw.progress.IsIndeterminate = false;
}
else
{
this.mw = (MainWindow)Application.Current.MainWindow;
mw.progress.IsIndeterminate = false;
mw.progress.IsIndeterminate = true;
formatEindeutigeData(XElement.Parse(await wc.DownloadStringTaskAsync(
"....url")));
mw.progress.IsIndeterminate = false;
}
}
private string addZeros(string number)
{
if (number.Length < 2)
return number.Insert(0, "0");
else
return number;
}
private void formatEindeutigeData(XElement xml)
{
box.Items.Clear();
var checkConnections = (from a in xml.Descendants("itdMessage")
where a.Attribute("code").Value == "-4000"
select a).Count();
var checkDateValid = (from a in xml.Descendants("itdMessage")
where a.Attribute("code").Value == "-4001"
select a).Count();
if (checkConnections == 1)
{
TextBlock nothing = new TextBlock();
nothing.TextAlignment = TextAlignment.Center;
nothing.HorizontalAlignment = HorizontalAlignment.Center;
nothing.FontSize = 18;
nothing.Text = "\n\n\nLeider gibt es keine Verbindung zu Ihrem gewünschten Ziel! :-(";
box.Items.Add(nothing);
}
if (checkDateValid == 1)
{
TextBlock nothing = new TextBlock();
nothing.TextAlignment = TextAlignment.Center;
nothing.HorizontalAlignment = HorizontalAlignment.Center;
nothing.FontSize = 18;
nothing.Text = "\n\n\nDatum außerhalb der Fahrplanperiode! :-(";
box.Items.Add(nothing);
}
var result = (from a in xml.Descendants("itdRouteList").Elements("itdRoute")
select new
{
partialRoute = from b in a.Descendants("itdPartialRouteList").Elements("itdPartialRoute")
select new
{
von = from c in b.Elements("itdPoint")
where c.Attribute("usage").Value == "departure"
select new
{
station = c.Attribute("name").Value,
abfahrtdatum_jahr = c.Element("itdDateTimeTarget").Element("itdDate").Attribute("year").Value,
abfahrtdatum_monat = c.Element("itdDateTimeTarget").Element("itdDate").Attribute("month").Value,
abfahrtdatum_tag = c.Element("itdDateTimeTarget").Element("itdDate").Attribute("day").Value,
abfahrtdatum_stunde = addZeros(c.Element("itdDateTimeTarget").Element("itdTime").Attribute("hour").Value),
abfahrtdatum_minute = addZeros(c.Element("itdDateTimeTarget").Element("itdTime").Attribute("minute").Value)
},
nach = from c in b.Elements("itdPoint")
where c.Attribute("usage").Value == "arrival"
select new
{
station = c.Attribute("name").Value,
ankuftdatum_jahr = c.Element("itdDateTimeTarget").Element("itdDate").Attribute("year").Value,
ankuftdatum_monat = c.Element("itdDateTimeTarget").Element("itdDate").Attribute("month").Value,
ankuftdatum_tag = c.Element("itdDateTimeTarget").Element("itdDate").Attribute("day").Value,
ankuftdatum_stunde = addZeros(c.Element("itdDateTimeTarget").Element("itdTime").Attribute("hour").Value),
ankuftdatum_minute = addZeros(c.Element("itdDateTimeTarget").Element("itdTime").Attribute("minute").Value)
},
fahrmittel = from c in b.Elements("itdMeansOfTransport")
select new
{
name_plus_linie = c.Attribute("name").Value,
linie = c.Attribute("shortname").Value,
symbol = c.Attribute("symbol").Value,
richtung = c.Attribute("destination").Value
}
},
fahrzeit = a.Element("seqRoutes").Element("seqRoute").Attribute("publicDuration").Value
}).ToList();
foreach (var r in result)
{
foreach (var q in r.partialRoute)
{
foreach (var s in q.von)
{
foreach (var t in q.nach)
{
foreach (var a in q.fahrmittel)
{
//MessageBox.Show("von: " + s.ToString() + " nach: " + t.ToString() + " mittels " + a.name_plus_linie + " richtung " + a.richtung + "fahrzeit: " + r.fahrzeit);
TextBlock tb_name_linie_richtung = new TextBlock();
tb_name_linie_richtung.FontSize = 18;
if (a.name_plus_linie != "" && a.richtung != "")
tb_name_linie_richtung.Text = a.name_plus_linie + ", Richtung " + a.richtung;
else
tb_name_linie_richtung.Text = "Fußweg";
box.Items.Add(tb_name_linie_richtung);
}
TextBlock uhrzeit_von = new TextBlock();
uhrzeit_von.Text = s.abfahrtdatum_stunde + ":" + s.abfahrtdatum_minute + " " + s.station;
box.Items.Add(uhrzeit_von);
TextBlock uhrzeit_nach = new TextBlock();
uhrzeit_nach.Text = t.ankuftdatum_stunde + ":" + t.ankuftdatum_minute + " " + t.station;
box.Items.Add(uhrzeit_nach);
}
}
}
box.Items.Add(new TextBlock().Text = "\n\n");
}
}
用户控件的XAML：
<UserControl x:Class="WLive.Routenplanung"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:toolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Input.Toolkit"
xmlns:Controls="http://metro.mahapps.com/winfx/xaml/controls"
xmlns:ControlsExtended="http://schemas.xceed.com/wpf/xaml/toolkit"
xmlns:local="clr-namespace:WLive">
<UserControl.Resources>
<local:FontSizeConverter x:Key="fontSizeCon" />
</UserControl.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="8*"/>
<ColumnDefinition Width="92*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="11*"/>
<RowDefinition Height="11*"/>
<RowDefinition Height="8*" />
<RowDefinition Height="10*"/>
<RowDefinition Height="8*"/>
<RowDefinition Height="52*"/>
</Grid.RowDefinitions>
<Label Content="Von: " Grid.Column="0" FontSize="18" Grid.Row="0" />
<toolkit:AutoCompleteBox x:Name="tbvon" Grid.Row="0" Grid.Column="1" FilterMode="Contains" MinimumPrefixLength="4"
FontSize="{Binding Path=ActualHeight, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Grid}, Converter={StaticResource fontSizeCon}}" TextChanged="routevon_TextChanged"/>
<Label Content="Nach: " Grid.Column="0" FontSize="18" Grid.Row="1"/>
<toolkit:AutoCompleteBox x:Name="tbnach" Grid.Row="1" Grid.Column="1" FilterMode="Contains" MinimumPrefixLength="4"
FontSize="{Binding Path=ActualHeight, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Grid}, Converter={StaticResource fontSizeCon}}" TextChanged="routenach_TextChanged"/>
<RadioButton x:Name="radioabf" Grid.Row="2" Grid.ColumnSpan="2" Content="Abfahrt" FontSize="18" IsChecked="True"/>
<RadioButton x:Name="radioank" Grid.Row="2" Grid.ColumnSpan="2" Content="Ankunft" FontSize="18" Margin="100 0 0 0"/>
<StackPanel Grid.Row="3" Grid.ColumnSpan="2">
<ControlsExtended:DateTimePicker x:Name="datumsscheisse"></ControlsExtended:DateTimePicker>
</StackPanel>
<Button x:Name="butabfragen" Grid.Row="4" Grid.ColumnSpan="2" FontSize="18" Content="Route berechnen" HorizontalAlignment="Right" Click="abfragen_Click" />
<ListBox x:Name="box" Grid.Row="5" Grid.ColumnSpan="2">
</ListBox>
</Grid>
routenplanungSelection的代码隐藏文件
private string datum;
public string Datum
{
get { return datum; }
set { datum = value; }
}
private string zeit;
public string Zeit
{
get { return zeit; }
set { zeit = value; }
}
private bool abfahrt;
public bool Abfahrt
{
get { return abfahrt; }
set { abfahrt = value; }
}
public RoutenplanungSelection()
{
InitializeComponent();
}
public void uebergebeXmlOrigins(XElement xml)
{
var getAllOrigins = from a in xml.Descendants("odvNameElem")
select new
{
id = a.Attribute("id").Value,
name = a.Value
};
foreach (var r in getAllOrigins)
{
comboabfahrt.ItemsSource = getAllOrigins;
}
}
public void uebergebeXmlDestination(XElement xml)
{
var getAllDestinations = from a in xml.Descendants("odvNameElem")
select new
{
id = a.Attribute("id").Value,
name = a.Value
};
foreach (var r in getAllDestinations)
{
comboziel.ItemsSource = getAllDestinations;
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
string abfahrtid = comboabfahrt.SelectedValue.ToString();
string zielid = comboziel.SelectedValue.ToString();
new Routenplanung().downloadEindeutigenXml(abfahrtid, zielid, Datum, Zeit, Abfahrt);
}
public void uebergebeAllgemeineInfos(string datum, string zeit, bool abfahrt)
{
Datum = datum;
Zeit = zeit;
Abfahrt = abfahrt;
}
窗口的XAML：
<Controls:MetroWindow x:Class="WLive.RoutenplanungSelection"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Controls="http://metro.mahapps.com/winfx/xaml/controls"
Title="WLive - Routenplanung, Haltestellenspezifikation" Height="230" Width="400" MinHeight="230" MinWidth="400">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="15*"/>
<ColumnDefinition Width="85*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="1*"/>
<RowDefinition Height="1*"/>
<RowDefinition Height="1*"/>
<RowDefinition Height="1*"/>
</Grid.RowDefinitions>
<Label Content="Bitte spezifizieren Sie Ihre Eingaben:" FontSize="18" Foreground="Red" FontWeight="Bold" Grid.Row="0" Grid.Column="1"/>
<Label Content="Von:" Grid.Column="0" Grid.Row="1" FontSize="24" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
<Label Content="Nach:" Grid.Column="0" Grid.Row="2" FontSize="20" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"/>
<ComboBox x:Name="comboabfahrt" Grid.Column="1" Grid.Row="1" DisplayMemberPath="name" SelectedValuePath="id" SelectedIndex="0" />
<ComboBox x:Name="comboziel" Grid.Column="1" Grid.Row="2" DisplayMemberPath="name" SelectedValuePath="id" SelectedIndex="0" />
<Button Grid.Row="3" Margin="0 5 5 5" HorizontalAlignment="Right" FontSize="20" Grid.Column="1" Click="Button_Click">OK</Button>
</Grid>
我的目标是，如果出现新窗口，我指定我的电台，我点击确定，窗口关闭，在列表框中我的结果显示。 一切正常，如果我说MessageBox.Show（xml.ToString（））;在formatData（XElement xml）方法中，它显示了正确的xml文件......但它并没有出现在列表框中....
答案 0 :(得分：0)
查看Button_Click窗口的RoutenplanungSelection方法：首先检索几个选定的值，然后 创建新实例 Routenplanung窗口。
当然，新实例与您在屏幕上看到的主窗口的实例不同。在辅助窗口中，您应该引用主要窗口。