Xamarin 表单 System.Reflection.TargetInvocationException：'Exception has been thrown by the target of an invocation.'

Question

嘿，我是 Xamarin Forms 的新手，我不知怎么看不透那个绑定的东西。

这是我设置 BindingContext 的代码：

public MainPage()
{
    InitializeComponent();
    BindingContext = new GameViewModel();
}

这是 ViewModel：

public class GameViewModel
{
    private Team Team1 { get; set; }
    public Team Team2 { get; set; }

    public string Team1Name { get { return Team1.Name; } }
    public string StaticString { get { return "static"; } }

}

StaticString 正在运行，Binding Team1.Name 未显示任何内容，Team1Name 正在抛出异常。

这是视图：

<StackLayout Orientation="Horizontal">
    <StackLayout Orientation="Vertical">
        <Entry Placeholder="{Binding Team1.Name}" />
        <Label Text="Welcome to Xamarin.Forms!" />
    </StackLayout>
    <StackLayout Orientation="Vertical">
        <Entry Placeholder="{Binding Team1Name}" />
        <Label Text="Welcome to Xamarin.Forms!" />
    </StackLayout>
</StackLayout>

我得到的异常是

System.Reflection.TargetInvocationException: 'Exception has been thrown by the target of an invocation.'

Answer 1

感谢 Jason 的评论，我发现我忘了初始化团队 class。不幸的是，我从 Xamarin 收到的错误消息并没有那么有用。

Xamarin 表单 System.Reflection.TargetInvocationException：'Exception has been thrown by the target of an invocation.'

Xamarin Forms System.Reflection.TargetInvocationException: 'Exception has been thrown by the target of an invocation.'

c#

model-binding

xamarin.forms