[英]Binding dynamically created control in code behind
我已經動態創建了彈出窗口,這些彈出窗口是在運行時在C#代碼后面創建的,其中填充了來自xaml的內容,並且難以在后面的代碼中綁定它們。 現在,當它被創建時,它會循環遍歷xaml中的項目並為每個項目創建一個相關的復選框:
ListView listView = new ListView();
//Create ListViewItem for each answer
foreach (Answer ans in Questions.DataUsedQuestion.AnswerOptions)
{
ListViewItem item = new ListViewItem();
StackPanel panel = new StackPanel();
CheckBox checkBox = new CheckBox();
TextBlock text = new TextBlock();
panel.Orientation = Orientation.Horizontal;
checkBox.Margin = new Thickness(5, 0, 10, 2);
text.Text = ans.DisplayValue;
panel.Children.Add(checkBox);
panel.Children.Add(text);
item.Content = panel;
listView.Items.Add(item);
}
我在應用程序的其他地方有類似的控件,它們綁定在xaml中,如下所示:
<TreeView ItemsSource="{Binding Path=AnswerOptions}" Height="320" Padding="5,5,5,5" Background="Transparent">
<TreeView.ItemTemplate >
<HierarchicalDataTemplate ItemsSource="{Binding Path=AnswerOptions}"
DataType="{x:Type QSB:Answer}" >
<StackPanel Orientation="Horizontal" Margin="0,2,0,2">
<CheckBox IsChecked="{Binding Path=IsSelected}" >
</CheckBox>
<TextBlock Text="{Binding DisplayValue}" Margin="5,0,0,0" />
</StackPanel>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
如何在后面的代碼中完成類似於上面的內容?
請查看MSDN文章如何:在代碼中創建綁定 。
你可以這樣寫:
Binding binding = new Binding("IsSelected");
binding.Source = ans;
checkBox.SetBinding(CheckBox.IsCheckedProperty, binding);
binding = new Binding("DisplayValue");
binding.Source = ans;
text.SetBinding(TextBlock.TextProperty, binding);
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