在选项卡控件上，我有几个选项卡，其中一个选项卡的内容中有一个文本框。
此文本框的内容与简单的 Path=PropertyName 和 UpdateSourceTrigger=LostFocus 绑定。我使用 LostFocus 的原因是我捕获了 Textbox 的 Lost focus 事件并可能重新格式化文本。这是一个“时间”文本框，如果他们输入“0900”，我想重新格式化为“09:00”。当我按 Tab 键移动到下一个控件时，这部分效果很好，但是如果我键入“0900”然后按其他选项卡之一，我会失去焦点并重新格式化文本框中的值，但绑定永远不会被调用来更新我的对象。当我回到选项卡时，该值被空白（或重置为对象上的原始值）
任何想法为什么在更改标签页时文本框不会触发绑定更新？
注意：这也发生在与失去焦点事件相关的常规文本框上。它似乎与单击选项卡有关。
[[添加代码]]更多注释：1.我正在动态创建选项卡和选项卡上的控件（不确定是否与它有关）2.我正在使用Prism库
主窗口 Xaml
<Window.Resources>
<DataTemplate DataType="{x:Type ctrls:myTextBoxDef}">
<Grid Width="300">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" MinWidth="100" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="28" />
</Grid.RowDefinitions>
<TextBlock Grid.Column="0"
HorizontalAlignment="Stretch"
VerticalAlignment="Center"
Text="{Binding LabelText}" />
<TextBox Grid.Column="1"
HorizontalAlignment="Stretch"
VerticalAlignment="Center"
Text="{Binding DocValue,
Mode=TwoWay,
ValidatesOnDataErrors=True,
UpdateSourceTrigger=LostFocus}"
/>
</Grid>
</DataTemplate>
</Window.Resources>
<Grid>
<TabControl HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
HorizontalContentAlignment="Stretch"
VerticalContentAlignment="Stretch"
IsTabStop="False"
ItemsSource="{Binding Tabs, Mode=OneWay}"
SelectedItem="{Binding SelectedTab,
Mode=TwoWay,
NotifyOnSourceUpdated=True}"
>
<TabControl.ItemTemplate>
<DataTemplate>
<Grid>
<TextBlock Margin="18,14,22,0"
Text="{Binding HeaderText}" />
</Grid>
</DataTemplate>
</TabControl.ItemTemplate>
<!-- Content -->
<TabControl.ContentTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<AdornerDecorator Grid.Column="0">
<ItemsControl Grid.Column="0"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
IsTabStop="False"
ItemsSource="{Binding Controls,
Mode=OneWay}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Grid.Column="0"
Margin="10,5,0,0"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Orientation="Vertical" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</AdornerDecorator>
</Grid>
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</Grid>
</Window>
主窗口代码背后
public partial class MainWindow : Window
{
private DataContextObject obj = new DataContextObject();
public MainWindow()
{
InitializeComponent();
myTextBoxDef txt1 = new myTextBoxDef(obj, "Textbox 1", "TAB1TextBox1");
myTextBoxDef txt1b = new myTextBoxDef(obj, "Textbox 1 value", "TAB1TextBox1");
myTextBoxDef txt2 = new myTextBoxDef(obj, "Textbox 2", "TAB1TextBox2");
myTextBoxDef txt2b = new myTextBoxDef(obj, "Textbox 2 value", "TAB1TextBox2");
obj.Tabs.Add(new myTabDef("Tab 1", new ObservableCollection<myTextBoxDef>() { txt1, txt2 }));
obj.Tabs.Add(new myTabDef("Tab 2", new ObservableCollection<myTextBoxDef>() { txt1b, txt2b }));
obj.SelectedTab = obj.Tabs[0];
this.DataContext = obj;
}
}
支持对象
public class DataContextObject : NotificationObject
{
List<myTabDef> _tabs = new List<myTabDef>();
public List<myTabDef> Tabs
{
get
{
return _tabs;
}
}
private myTabDef _item;
public myTabDef SelectedTab
{
get
{ return _item; }
set
{
_item = value;
this.RaisePropertyChanged("SelectedItem");
}
}
private string _txt1 = "";
public string TAB1TextBox1
{
get { return _txt1; }
set
{
_txt1 = value;
this.RaisePropertyChanged("TAB1TextBox1");
}
}
private string _txt2 = "";
public string TAB1TextBox2
{
get { return _txt2; }
set
{
_txt2 = value;
this.RaisePropertyChanged("TAB1TextBox2");
}
}
private string _txt3 = "";
public string TAB2TextBox1
{
get { return _txt3; }
set
{
_txt3 = value;
this.RaisePropertyChanged("TAB2TextBox1");
}
}
}
public class myTabDef
{
public myTabDef(string tabText, ObservableCollection<myTextBoxDef> controls)
{
HeaderText = tabText;
_left = controls;
}
public string HeaderText { get; set; }
private ObservableCollection<myTextBoxDef> _left = new ObservableCollection<myTextBoxDef>();
public ObservableCollection<myTextBoxDef> Controls
{
get
{
return _left;
}
}
}
public class myTextBoxDef : NotificationObject
{
public myTextBoxDef(NotificationObject bound, string label, string bindingPath)
{
LabelText = label;
Path = bindingPath;
BoundObject = bound;
BoundObject.PropertyChanged += BoundObject_PropertyChanged;
}
public string LabelText
{
get;
set;
}
public NotificationObject BoundObject
{
get;
set;
}
public string DocValue
{
get
{
return PropInfo.GetValue(BoundObject, null) as string;
}
set
{
PropInfo.SetValue(BoundObject, value, null);
}
}
protected virtual void BoundObject_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName.Equals(Path))
{
this.RaisePropertyChanged("DocValue");
}
}
public string Path
{
get;
set;
}
private PropertyInfo pi = null;
protected PropertyInfo PropInfo
{
get
{
if (pi == null && BoundObject != null && !string.IsNullOrEmpty(Path))
{
PropertyInfo[] properties = BoundObject.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance);
pi = properties.Where((prop) => string.Compare(prop.Name, Path, true) == 0).FirstOrDefault();
}
return pi;
}
}
}