Question

可以在GroupHeaderTemplate中绑定TextColor属性标签吗？

这是我的源代码：

 <ListView.GroupHeaderTemplate>
            <DataTemplate>
                <ViewCell Height="25">
                    <StackLayout VerticalOptions="FillAndExpand" Padding="5" 
                         BackgroundColor="#0477B3">
                        <Label Text="{Binding Key, Converter={StaticResource dateConverter}}" 
                               TextColor="#ffffff" VerticalOptions="Center"/>
                    </StackLayout>
                </ViewCell>
            </DataTemplate>
        </ListView.GroupHeaderTemplate>

BR 最大

Answer 1

组的BindingContext是分组本身。在不了解您的代码的情况下，这里是一个如何绑定到组头模板中的分组对象的示例：

<ListView  ItemsSource="{Binding}" 
        IsGroupingEnabled="true" GroupDisplayBinding="{ Binding Name }"
        GroupShortNameBinding ="{ Binding ShortName }">
    <ListView.GroupHeaderTemplate>
        <DataTemplate>
            <ViewCell Height="25">
                <StackLayout VerticalOptions="FillAndExpand" Padding="5" 
                     BackgroundColor="#0477B3">
                    <!-- Name refers to Group.Name, depeding on your data you can use the key of your grouping here -->
                    <Label Text="{Binding Name}" VerticalOptions="Center"/>
                </StackLayout>
            </ViewCell>
        </DataTemplate>
    </ListView.GroupHeaderTemplate>
    <ListView.ItemTemplate>
        <DataTemplate>
            <TextCell Text="{ Binding Title }" Detail="{ Binding Description }" />
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

代码：

public partial class MainPage : ContentPage
{
    public MainPage()
    {
        InitializeComponent();
        ObservableCollection<Group> groupedItems = new ObservableCollection<Group>();
        Group group = new Group("First Group");
        groupedItems.Add(group);
        Item item = new Item("First Item", "First Item Description");
        group.Add(item);
        this.BindingContext = groupedItems;
    }
}

public class Item
{
    public String Title { get; private set; }
    public String Description { get; private set; }

    public Item(String title, String description)
    {
        Title = title;
        Description = description;
    }
}
public class Group : ObservableCollection<Item>
{
    public String Name { get; private set; }

    public Group(String Name)
    {
        this.Name = Name;
    }
}

从here

获取和修改的示例

如何在GroupHeaderTemplate标签xamarin中绑定textcolor

1 个答案: