[UWP] [VB] [XAML]刷新ContentControl

本文介绍了[UWP] [VB] [XAML]刷新ContentControl的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我有一个ContentControl。用于ContentTemplate的DataTemplate包含ItemsControl（当然还有其他几个控件），我当然有一个DataTemplate作为ItemTemplate。 ItemsControl的ItemsSource绑定到ContentControl内容的属性。当我更新ContentControl的内容时，我当然希望更改显示在页面上。但是，即使更新了内容，也不会显示更改。如何让ContentControl显示更新？谢谢。 Nathan Sokalski [email protected] http://www.nathansokalski.com/解决方案 Nathan Sokalski， >>"当我更新ContentControl的内容时，我当然希望更改显示在页。但是，即使更新了内容，也不会显示更改。如何让ContentControl显示更新？" 请检查您是否为您的类实现了INotifyPropertyChanged接口。由于我没有看到您的代码，因此很难帮助您诊断问题。您最好在此处发布一个简单的可重现代码示例。 无论如何，请检查我的以下代码示例，它在我身边运作良好。< StackPanel> ; < ContentControl x：Name =" contentControl"> < ContentControl.ContentTemplate> < DataTemplate> < ItemsControl ItemsSource =" {Binding tests}"> < ItemsControl.ItemTemplate> < DataTemplate> < TextBlock Text =" {Binding Name}">< / TextBlock> < / DataTemplate> < /ItemsControl.ItemTemplate> < / ItemsControl> < / DataTemplate> < /ContentControl.ContentTemplate> < / ContentControl> < Button Content =" update"点击= QUOT; Button_Click">< /按钮> < / StackPanel> Public NotInheritable Partial Class MainPage Inherits Page 私有属性测试As ObservableCollection（Of Test） Public Sub New（） Me.InitializeComponent（） tests = New ObservableCollection（Of Test）（） tests .Add（New Test（）with { .Name =" name1" }） tests.Add（New Test（）With { .Name =" name2" ; }） contentControl.Content = New With {tests } End Sub Private Sub Button_Click（ByVal sender As Object，ByVal e As RoutedEventArgs） tests（0）.Name =" _name1" 结束次级结束类 公共类测试继承INotifyPropertyChanged 公共事件PropertyChanged As PropertyChangedEventHandler Private Sub RaisePropertyChanged（ByVal PropertyName As String） RaiseEvent PropertyChanged（Me，New PropertyChangedEventArgs（PropertyName）） End Sub Private _Name As String 公共属性名称字符串获取返回_Name 结束获取设置（ByVal值为字符串） _Name = value RaisePropertyChanged（" Name"） End Set End Property End Class 最好的问候， Xavier Xie I have a ContentControl. The DataTemplate used for the ContentTemplate contains an ItemsControl (and several other controls, of course), for which I of course have a DataTemplate as the ItemTemplate. The ItemsSource for the ItemsControl is bound to a property of the ContentControl's Content. When I update the Content of the ContentControl I of course want the change to be shown on the page. However, the change is not being displayed even though the Content is updated. How can I make the ContentControl show the update? Thanks.Nathan Sokalski [email protected] http://www.nathansokalski.com/ 解决方案 Hi Nathan Sokalski,>>" When I update the Content of the ContentControl I of course want the change to be shown on the page. However, the change is not being displayed even though the Content is updated. How can I make the ContentControl show the update?"Please check if you’ve implemented the INotifyPropertyChanged interface for your class. Since I did not see your code, It’s hard to help you diagnose your issue. You’d better post a simple reproducible code sample here.Anyway, please check my following code sample, it worked well on my side.<StackPanel> <ContentControl x:Name="contentControl"> <ContentControl.ContentTemplate> <DataTemplate> <ItemsControl ItemsSource="{Binding tests}"> <ItemsControl.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding Name}"></TextBlock> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> </DataTemplate> </ContentControl.ContentTemplate> </ContentControl> <Button Content="update" Click="Button_Click"></Button> </StackPanel>Public NotInheritable Partial Class MainPage Inherits Page Private Property tests As ObservableCollection(Of Test) Public Sub New() Me.InitializeComponent() tests = New ObservableCollection(Of Test)() tests.Add(New Test() With { .Name = "name1" }) tests.Add(New Test() With { .Name = "name2" }) contentControl.Content = New With {tests } End Sub Private Sub Button_Click(ByVal sender As Object, ByVal e As RoutedEventArgs) tests(0).Name = "_name1" End SubEnd ClassPublic Class Test Inherits INotifyPropertyChanged Public Event PropertyChanged As PropertyChangedEventHandler Private Sub RaisePropertyChanged(ByVal PropertyName As String) RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(PropertyName)) End Sub Private _Name As String Public Property Name As String Get Return _Name End Get Set(ByVal value As String) _Name = value RaisePropertyChanged("Name") End Set End PropertyEnd ClassBest Regards,Xavier Xie 这篇关于[UWP] [VB] [XAML]刷新ContentControl的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！