Question

请考虑以下代码：

public class Person {
public int Id { get; set; }
public string Name { get; set; }
public string Surname { get; set; }
}

public class HealthInfo {
public int BMI { get; set; }
public int HeartRate { get; set; }
public string DietPlan { get; set; }
}


Dictionary<Person, HealthInfo> myPersonInfo = new Dictionary<Person, HealthInfo>();

myPersonInfo.Add( new Person { Id = 1, Name = "Name1", Surname = "Surname1" }, new HealthInfo { BMI = 1, DietPlan = "Banting", HeartRate = 20 } );
myPersonInfo.Add( new Person { Id = 1, Name = "Name2", Surname = "Surname2" }, new HealthInfo { BMI = 1, DietPlan = "Banting", HeartRate = 20 } );
myPersonInfo.Add( new Person { Id = 1, Name = "Name3", Surname = "Surname3" }, new HealthInfo { BMI = 1, DietPlan = "Banting", HeartRate = 20 } );
myPersonInfo.Add( new Person { Id = 1, Name = "Name4", Surname = "Surname4" }, new HealthInfo { BMI = 1, DietPlan = "Banting", HeartRate = 20 } );

我正试图从我的xaml绑定到这个词典（myPersonInfo）对于每个人创建一个选项卡，其中选项卡标题将是该人的名称，然后该选项卡的内容将显示HealtInfo。

我在XAML

中绑定了这个词典

我有以下内容：

<TabControl ItemsSource="{Binding myPersonInfo.Keys}" SelectedIndex="0">
                <TabControl.ItemTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding Path=Name}"/>
                    </DataTemplate>
                </TabControl.ItemTemplate>
                <TabControl.ContentTemplate>
                   <DataTemplate>
                       <TextBlock Text="{Binding Path=Key.Value.BMI}"/>
                   </DataTemplate>
                </TabControl.ContentTemplate>
</TabControl>

如何使用ItemTemplate的Key（Person）属性和如何将Value（HealtInfo）的属性用于当前Key的ContentTemplate？

Answer 1

创建“聚合”类并在ObservableCollection中使用它，数据绑定很好地支持

 public class PersonHealthInfo
 {
     public Person Person {get; set; }
     public HealthInfo HealthInfo {get; set; }
 }

ObservableCollection<PersonHealthInfo> persons = new ObservableCollection<PersonHealthInfo>();

var person1 = new PersonHealthInfo
{
    Person = new Person { Id = 1, Name = "Name1", Surname = "Surname1" },
    HealthInfo = new HealthInfo { BMI = 1, DietPlan = "Banting", HeartRate = 20 }
}

persons.Add(person1);

Answer 2

您需要更改xaml中的绑定。

<TabControl ItemsSource="{Binding myPersonInfo}" SelectedIndex="0">
        <TabControl.ItemTemplate>
            <DataTemplate>
                <TextBlock Text="{Binding Path=Key.Name}"/>
            </DataTemplate>
        </TabControl.ItemTemplate>
        <TabControl.ContentTemplate>
            <DataTemplate>
                <TextBlock Text="{Binding Value.BMI}"/>
            </DataTemplate>
        </TabControl.ContentTemplate>
    </TabControl>

此外，myPersonInfo应该是一个属性。所以声明如下：

public Dictionary<Person, HealthInfo> myPersonInfo { get; set; }

虽然此代码可以使用，但请考虑重构模型以使其更清晰。

将XAML绑定到Dictionary

2 个答案: