使用Listview项和标题绑定字典

Posted 2021-03-27

我正在尝试将Dictionary>与列表视图绑定。将标题设置为Idictionary的键，将约会对象列表设置为项目。但数据没有受到约束。

字符串（键）需要与标题元素绑定，内部列表列表包含该标题下的对象。

计划产出：

我怎样才能解决这个问题？

<ListView ScrollViewer.VerticalScrollBarVisibility="Hidden"        ScrollViewer.VerticalScrollMode="Auto" ScrollViewer.HorizontalScrollMode="Auto"
                         ItemsSource="{Binding Source={StaticResource   EventsObj}}">      
<ListView.ItemsPanel>
    <ItemsPanelTemplate>
        <VirtualizingStackPanel Orientation="Horizontal" />
    </ItemsPanelTemplate>
</ListView.ItemsPanel>

<ListView.ItemTemplate>
    <DataTemplate>
        <Textblock Text="{Binding EventsObj.Value.UserName}"/>
        <Textblock Text="{Binding EventsObj.Value.VisitorFor}"/>
    </DataTemplate>
</ListView.ItemTemplate>
<ListView.HeaderTemplate>
    <DataTemplate>
        <Grid Margin="5,10,0,10"  Background="Black">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="68*"/>
                <ColumnDefinition Width="21*"/>
            </Grid.ColumnDefinitions>
            <TextBlock Foreground="White" Text="{Binding EventsObj.Key}">
            </TextBlock>
        </Grid>
    </DataTemplate>
</ListView.HeaderTemplate>

C＃中的对象是

public class Appointment
{
   public Dictionary<DateTime, List<Appointments>> Data {get; set;}
}

public class Appointments
{
 public string UserName {get; set;}
 public string VisitorFor {get; set;}
}


        List<Appointments> Datas = new List<Appointments>();
        Datas = new List<Aprio.Appointments>();
        Datas.Add(new Appointments { UserName = "Pradeep", VisitorFor = "John Sam" });
        Datas.Add(new Appointments { UserName = "Danny", VisitorFor = "John Sam" });
        Datas.Add(new Appointments { UserName = "Ram", VisitorFor = "John Sam" });
        Datas.Add(new Appointments { UserName = "Siva", VisitorFor = "John Sam" });
        Datas.Add(new Appointments { UserName = "Ragu", VisitorFor = "John Sam" });
        this.Appointment.Add("John", Datas);

        List<Appointments> Datas2 = new List<Appointments>();
        Datas2 = new List<Appointments>();
        Datas2.Add(new Appointments { UserName = "Guru", VisitorFor = "Sam Hilferg" });
        Datas2.Add(new Appointments { UserName = "Jack", VisitorFor = "Sam Hilferg" });
        Datas2.Add(new Appointments { UserName = "Bob", VisitorFor = "Sam Hilferg" });
        this.Appointment.Add("Sam", Datas2);

答案

更改ListView ItemTemplate。试试这个！

<ListView.ItemTemplate>
                <DataTemplate>
                    <ListView DataContext="{Binding EventsObj.Value}">
                        <ListView.ItemTemplate>
                            <DataTemplate>
                                <StackPanel>
                                    <Textblock Text="{Binding UserName}"/>
                                    <Textblock Text="{Binding VisitorFor}"/>
                                </StackPanel>
                            </DataTemplate>
                        </ListView.ItemTemplate>
                    </ListView>
                </DataTemplate>
            </ListView.ItemTemplate>

另一答案

我把标题移到了右边。在MSDN找到了这个答案。它对我有用。

 <GridView.ItemsPanel>
    <ItemsPanelTemplate>
    <ItemsWrapGrid GroupHeaderPlacement="Left"/>
    </ItemsPanelTemplate>
 </GridView.ItemsPanel>