[英]System.Reflection.TargetInvocationException: 'Exception has been thrown by the target of an invocation
[英]Xamarin.form - Masterdetailpage : System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation
我已经使用xamarin.form便携式
当我使用MasterDetailPage时,出现错误:“ System.Reflection.TargetInvocationException:调用的目标引发了异常。”
以下是我的XAML代码
<?xml version="1.0" encoding="utf-8" ?>
<MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="SlideNavigation.Page1"
IsPresented="True">
<MasterDetailPage.Master>
<ContentPage>
<ListView x:Name="listview" ItemSelected="Listview_itemSelected">
<ListView.ItemTemplate>
<DataTemplate>
<TextCell Text="{Binding Name}" Detail="{Binding Status}"></TextCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ContentPage>
</MasterDetailPage.Master>
<MasterDetailPage.Detail>
<ContentPage ></ContentPage>
</MasterDetailPage.Detail>
</MasterDetailPage>
以下是我的.cs代码
public partial class Page1 : MasterDetailPage
{
public Page1()
{
InitializeComponent();
listview.ItemsSource = new List<Contact>
{
new Contact { Name = "Kirti",Status = "True"},
new Contact { Name = "Nilesh",Status = "False"}
};
}
void Listview_itemSelected(object sender, SelectedItemChangedEventArgs e)
{
var contact = e.SelectedItem as Contact;
Detail = new NavigationPage(new Page2(contact.Name));
IsPresented = false;
}
}
请帮助我我犯错了。
提前致谢
您必须在母版页上设置标题属性
<MasterDetailPage.Master>
<ContentPage Title="Content Page">
<ContentPage.Content>
<ListView x:Name="listview" ItemSelected="Listview_itemSelected">
<ListView.ItemTemplate>
<DataTemplate>
<TextCell Text="{Binding Name}" Detail="{Binding Status}"></TextCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ContentPage.Content>
</ContentPage>
</MasterDetailPage.Master>
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