嗨，如果選中專案復選框并隱藏它，我試圖顯示評論輸入，我有這個 XAML
<ListView ItemsSource="{Binding TaskItems}" x:Name="TasksItems" HasUnevenRows="True" VerticalScrollBarVisibility="Default" SelectionMode="None">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout IsVisible="True" Orientation="Vertical">
<Grid BackgroundColor="White">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
</Grid.RowDefinitions>
<StackLayout Grid.Column="0" Grid.Row="0">
<input:CheckBox Type="Box" IsChecked="{Binding TaskChecked , Mode=TwoWay}"/>
</StackLayout>
<StackLayout Grid.Column="0" Grid.Row="1" IsVisible="{Binding CommentRequired}">
<Entry BackgroundColor="White" PlaceholderColor="Black" HeightRequest="40" TextColor="Black"/>
</StackLayout>
</Grid>
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
我有這個 c# 代碼來讀取資料庫中的專案
public class TaskData
{
public bool TaskChecked { get; set; }
public bool CommentRequired { get; set; }
}
public partial class HomePage : ContentPage
{
public HomePage()
{
ObservableCollection<TaskData> TaskItems { get; set; }
ObservableCollection<TaskData> TasksList;
TaskItems = new ObservableCollection<TaskData>();
//Loop the tasks from database result
While...
TaskItems.Add(new TaskData
{
TaskChecked = false,
CommentRequired = false,
});
//End Loop
TasksListView.ItemsSource = TaskItems;
}
}
現在我需要添加一個“CheckChanged”事件以在用戶選中目標串列視圖項的復選框時顯示評論條目（IsVisible="True"）
謝謝
uj5u.com熱心網友回復：
首先添加事件。
<input:CheckBox Type="Box" IsChecked="{Binding TaskChecked , Mode=TwoWay}" CheckedChanged="OnCheckBoxCheckedChanged"/>
為第二個堆疊添加名稱
<StackLayout x:Name="StackLayoutEntry" Grid.Column="0" Grid.Row="1" IsVisible="{Binding CommentRequired}">
<Entry BackgroundColor="White" PlaceholderColor="Black" HeightRequest="40" TextColor="Black"/>
</StackLayout>
然后在代碼后面使用這個函式找到被點擊的復選框的入口
void OnCheckBoxCheckedChanged(object sender, CheckedChangedEventArgs e)
{
var Sender = (CheckBox)sender;
var stacklayoutentry = Sender.Parent.FindByName<StackLayout>("StackLayoutEntry");
stacklayoutentry.IsVisible = True;
}
這也可能有助于您檢查
另一種方法，但您是所選專案的識別符號。 查看
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