多个DataTemplate中的DataTemplate的XAML绑定问题？
多个DataTemplate中的DataTemplate的XAML绑定问题？
提问于 2016-09-19 22:18:28
我正在开发通用的Windows应用程序，在我当前的项目中，我看到了如下图所示的日历事件。
当我第一次打开我的应用程序时，它会询问登录提示，然后在登录成功后，只会显示单个事件，而不会显示多个事件。另外，当我单击注销按钮，然后再次单击登录按钮时，同样的问题也发生了。
这是用户首次登录应用成功后的图片。
但当我第二次打开我的应用程序时，它显示了所有事件，比如第一张图片。
这是我在XAML页面中编写的代码。
<Grid Margin="0,05,0,0" Background="Transparent" Height="60">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="70"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Rectangle Fill="#2B88D8" Grid.RowSpan="6" Margin="0,0,20,0" Visibility="{Binding TimeLineVisibility}"/>
<Line Stroke="#2B88D8" X1="1300" Y1="0" Grid.ColumnSpan="2" Margin="43,0,0,0"
Grid.Row="{Binding RowNum}" Grid.RowSpan="{Binding RowSpanNum}"
StrokeDashArray="3,2"
StrokeThickness="1" VerticalAlignment="Center" Visibility="{Binding TimeLineVisibility}"/>
<StackPanel Grid.Column="0" Orientation="Horizontal" VerticalAlignment="Top"
Grid.Row="{Binding DateRowNum}" Grid.RowSpan="{Binding DateRowSpanNum}">
<TextBlock Text="{Binding Hour}" FontWeight="Light" Margin="5,0,0,0" FontSize="15" Foreground="{Binding FontColor}" />
<TextBlock Text="{Binding des}" FontWeight="Light" Margin="0,0,0,0" FontSize="15" Foreground="{Binding FontColor}" />
</StackPanel>
<Grid Grid.ColumnSpan="2" Grid.RowSpan="6">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<Line Stroke="#C3C3C3" X1="1300" Y1="0" Grid.ColumnSpan="2" Grid.Row="1" Margin="62,-3,0,0"
StrokeThickness="1" StrokeDashArray="3,5" VerticalAlignment="Center"/>
<GridView ItemsSource="{Binding EventsBefore30}" Grid.Row="0"
Visibility="{Binding LessThan30DescVisibility}"
Margin="62 0 0 2"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="Stretch">
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
<Setter Property="Margin" Value="0,0,0,0"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="Height" Value="30"/>
<Setter Property="FontFamily" Value="Arial"/>
</Style>
</GridView.ItemContainerStyle>
<GridView.ItemTemplate>
<DataTemplate>
<Border Margin="0 -3 0 2" Padding="5,0,10,10" BorderBrush="#A6D1F5" Background="#C1E9FE" BorderThickness="5 0 0 0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<StackPanel Orientation="Horizontal">
<TextBlock Grid.Row="0" Text="{Binding Subject}" HorizontalAlignment="Left" VerticalAlignment="Center" Grid.Column="1" FontWeight="Bold" Margin="0,0,15,0" FontSize="15" Foreground="Black" />
<TextBlock Grid.Row="0" Text="{Binding Location}" HorizontalAlignment="Left" VerticalAlignment="Center" Grid.Column="1" Margin="0,0,0,0" FontSize="12" Foreground="Black" />
</StackPanel>
</Border>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
<Border Grid.Row="0" Margin="62 -3 10 2"
Visibility="{Binding IsSingleEventBefore30}"
BorderBrush="#A6D1F5" Background="#C1E9FE" BorderThickness="5 0 0 0"
HorizontalAlignment="Stretch">
<StackPanel Orientation="Horizontal">
<TextBlock Grid.Row="0" Text="{Binding LessThan30Desc}"
HorizontalAlignment="Left" VerticalAlignment="Center"
Grid.Column="1" FontWeight="Bold" Margin="0,0,15,0"
FontSize="15" Foreground="Black" />
<TextBlock Grid.Row="0" Text="{Binding LessThan30Loc}"
HorizontalAlignment="Left" VerticalAlignment="Center"
Grid.Column="1" FontWeight="Bold" Margin="0,0,0,0"
FontSize="12" Foreground="Black" />
</StackPanel>
</Border>
<Image Grid.ColumnSpan="2" Grid.RowSpan="3" Height="1.4" Stretch="Fill"
VerticalAlignment="Bottom" HorizontalAlignment="Stretch" Margin="0,10,0,0"
Source="Assets/linebrown.png"></Image>
</Grid>
</Grid>
<ListView x:Name="listview" Grid.Column="0"
Grid.Row="3" Background="Transparent"
ItemTemplate="{StaticResource ListViewTemplateRequests}">
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="FontFamily" Value="Arial"/>
</Style>
</ListView.ItemContainerStyle>
</ListView>这是用于将数据绑定到列表视图和网格视图的类文件。
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.UI.Xaml;
namespace O365UWP_Dashboard
{
public class Hours : INotifyPropertyChanged
{
private string _hour;
public string des { get; set; }
public string hour24 { get; set; }
//public string minute { get; set; }
public static ObservableCollection<Hours> GethoursRecord()
{
ObservableCollection<Hours> GethoursRecord = new ObservableCollection<Hours>
{
new Hours {Hour="12" , des="a",hour24="0",_rowSpanNum=6 ,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6, TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="1" , des="a",hour24="1",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="2" , des="a" ,hour24="2",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="3" , des="a" ,hour24="3",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="4" , des="a",hour24="4",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="5" , des="a" ,hour24="5",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="6" , des="a" ,hour24="6",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="7" , des="a",hour24="7",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="8" , des="a",hour24="8",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="9" , des="a",hour24="9",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="10" , des="a",hour24="10",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="11" , des="a" ,hour24="11",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="12", des="p" ,hour24="12",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="1" , des="p",hour24="13",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="2" , des="p",hour24="14",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="3" , des="p",hour24="15",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="4" , des="p",hour24="16",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="5" , des="p",hour24="17",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="6" , des="p" ,hour24="18",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="7" , des="p",hour24="19",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="8" , des="p",hour24="20",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="9" , des="p",hour24="21",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="10" , des="p",hour24="22",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
new Hours {Hour="11" , des="p",hour24="23",_rowSpanNum=6,_rowNum=0,_dateRowNum=0,_dateRowSpanNum=6,TimeLineVisibility=Visibility.Collapsed,GreaterThan30DescVisibility=Visibility.Collapsed,LessThan30DescVisibility=Visibility.Collapsed,FontColor="Black",IsSingleEventAfter30=Visibility.Collapsed,IsSingleEventBefore30=Visibility.Collapsed},
};
return GethoursRecord;
}
private string _desc;
public string Desc
{
get { return _desc; }
set
{
_desc = value;
OnPropertyChanged("Desc");
}
}
private string _greaterThan30Desc;
public string GreaterThan30Desc
{
get { return _greaterThan30Desc; }
set
{
_greaterThan30Desc = value;
OnPropertyChanged("GreaterThan30Desc");
}
}
private string _lessThan30Desc;
public string LessThan30Desc
{
get { return _lessThan30Desc; }
set
{
_lessThan30Desc = value;
OnPropertyChanged("LessThan30Desc");
}
}
private string _greaterThan30Loc;
public string GreaterThan30Loc
{
get { return _greaterThan30Loc; }
set
{
_greaterThan30Loc = value;
OnPropertyChanged("GreaterThan30Loc");
}
}
private string _lessThan30Loc;
public string LessThan30Loc
{
get { return _lessThan30Loc; }
set
{
_lessThan30Loc = value;
OnPropertyChanged("LessThan30Loc");
}
}
private Visibility _greaterThan30DescVisibility;
public Visibility GreaterThan30DescVisibility
{
get { return _greaterThan30DescVisibility; }
set
{
_greaterThan30DescVisibility = value;
OnPropertyChanged("GreaterThan30DescVisibility");
}
}
private Visibility _isSingleEventBefore30;
public Visibility IsSingleEventBefore30
{
get { return _isSingleEventBefore30; }
set
{
_isSingleEventBefore30 = value;
OnPropertyChanged("IsSingleEventBefore30");
}
}
private Visibility _isSingleEventAfter30;
public Visibility IsSingleEventAfter30
{
get { return _isSingleEventAfter30; }
set
{
_isSingleEventAfter30 = value;
OnPropertyChanged("IsSingleEventAfter30");
}
}
private Visibility _lessThan30DescVisibility;
public Visibility LessThan30DescVisibility
{
get { return _lessThan30DescVisibility; }
set
{
_lessThan30DescVisibility = value;
OnPropertyChanged("LessThan30DescVisibility");
}
}
private int _rowSpanNum;
public int RowSpanNum
{
get
{
return _rowSpanNum;
}
set
{
_rowSpanNum = value;
OnPropertyChanged("RowSpanNum");
}
}
private int _rowNum;
public int RowNum
{
get
{
return _rowNum;
}
set
{
_rowNum = value;
OnPropertyChanged("RowNum");
}
}
private int _dateRowSpanNum;
public int DateRowSpanNum
{
get
{
return _dateRowSpanNum;
}
set
{
_dateRowSpanNum = value;
OnPropertyChanged("DateRowSpanNum");
}
}
private int _dateRowNum;
public int DateRowNum
{
get
{
return _dateRowNum;
}
set
{
_dateRowNum = value;
OnPropertyChanged("DateRowNum");
}
}
public Visibility TimeLineVisibility
{
get
{
return _timeLineVisibility;
}
set
{
_timeLineVisibility = value;
OnPropertyChanged("TimeLineVisibility");
}
}
public string Hour
{
get
{
return _hour;
}
set
{
_hour = value;
OnPropertyChanged("Hour");
}
}
public string FontColor
{
get
{
return _fontColor;
}
set
{
_fontColor = value;
OnPropertyChanged("FontColor");
}
}
private List<Events> _eventsBefore30;
//public List<Events> EventsBefore30 { get; set; }
private List<Events> _eventsAfter30;
public List<Events> EventsBefore30
{
get
{
return _eventsBefore30;
}
set
{
_eventsBefore30 = value;
OnPropertyChanged("EventsBefore30");
}
}
public List<Events> EventsAfter30
{
get
{
return _eventsAfter30;
}
set
{
_eventsAfter30 = value;
OnPropertyChanged("EventsAfter30");
}
}
private Visibility _timeLineVisibility;
private string _fontColor;
private void OnPropertyChanged(string v)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(v));
}
public event PropertyChangedEventHandler PropertyChanged;
}}
我的逻辑在后端代码中没有问题。
-Pradeep
回答 1
Stack Overflow用户
发布于 2016-09-19 23:00:07
我将这两行代码改为可观察的集合，然后它就可以正常工作了。
private List<Events> _eventsBefore30;
//public List<Events> EventsBefore30 { get; set; }
private List<Events> _eventsAfter30在我将上面的几行改为可观察的集合之后，它看起来就像下面的几行。
private ObservableCollection<Events> _eventsBefore30=new ObservableCollection<Events>();
//public List<Events> EventsBefore30 { get; set; }
private ObservableCollection<Events> _eventsAfter30 = new ObservableCollection<Events>();页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/39575446
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