Question

我正在用类中的对象填充ListView，但是看不到所有字段。有些确实表现很好，有些根本没有。我怀疑我的字符串格式有问题。感谢帮助。附带说明，调试时，也无法在Watch中评估未在ListView中显示的类成员的值，只给我一个“ {...}”，而不是具体值-

我尝试实现DatetimeToStringConverter，正如在不同线程上所暗示的那样，但这对我不起作用。

C＃

public partial class LiftLog : ContentPage
{
    ObservableCollection<RecordedLift> RecordList;

    public LiftLog()
    {
        RecordList = new ObservableCollection<RecordedLift>();
        InitializeComponent();
        RecordedLifts.ItemsSource = RecordList;
    }
}

XAML：

<ListView x:Name="RecordedLifts" ItemSelected="RecordedLifts_ItemSelected" HasUnevenRows="True">
    <ListView.ItemTemplate>
        <DataTemplate>
            <!-- <TextCell Text="{Binding Category}" Detail="{Binding Exercise}"/>-->
            <ViewCell>
                <ViewCell.ContextActions>
                    <MenuItem Clicked="MenuItem_Clicked" CommandParameter="{Binding .}" Text="More" />
                    <MenuItem Clicked="MenuItem_Clicked_1" CommandParameter="{Binding .}" Text="Delete" IsDestructive="True" />
                </ViewCell.ContextActions>
                <StackLayout Orientation="Horizontal" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
                    <StackLayout HorizontalOptions="StartAndExpand">
                        <Label Text="{Binding Exercise}"/>
                        <Label Text="{Binding Category}" TextColor="Blue"/>
                    </StackLayout>
                    <StackLayout HorizontalOptions="CenterAndExpand" Orientation="Vertical">
                        <Label Text="{Binding Weight, StringFormat='{}{0:0} KG'}" />
                        <Label Text="{Binding Reps, StringFormat='{}{0:0} Reps'}" />
                    </StackLayout>
                    <StackLayout HorizontalOptions="EndAndExpand" Orientation="Vertical">
                        <Label Text="{Binding Fmax, StringFormat='1RM = \{0:0.00\}'}" />
                        <Label Text="{Binding Date, StringFormat='Lifted on-\{0:dd/MM/yy}'}" TextColor="Red" />
                    </StackLayout>
                </StackLayout>
            </ViewCell>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

public class RecordedLift
    {
        public string Category { get; set; }
        public DateTime Date { get; set; }
        public int Reps { get; set; }
        public double Weight { get; set; }
        public string Exercise { get; set; }
        public double Fmax { get; set; }
        public string Detail {
            get
            {
                string result = string.Format("{0:F2} ({1:F0} Reps with {2:F2} KG", Fmax, Reps, Weight);
                return result;
            }
            set { }
        }
    }

我希望ListView中的所有标签都根据其绑定填充。运动，类别，重复次数和Fmax很好地显示出来。日期和权重根本不显示。

编辑：为RecordedLift添加了核心

如何正确格式化ListViews的字符串

0 个答案: