2
在tabcontrol上，我有幾個標籤頁，其中一個標籤頁上有一個文本框。WPF控件在單擊標籤時失去焦點
此文本框內容綁定了一個簡單的Path = PropertyName和UpdateSourceTrigger = LostFocus。我使用LostFocus的原因是我陷入了文本框的丟失焦點事件，並可能重新格式化文本。這是一個「時間」文本框，如果他們輸入「0900」，我想重新格式化爲「09:00」。當我按Tab鍵移動到下一個控件時，這部分工作得很好，但如果我鍵入「0900」，然後按其中一個其他選項卡，我擊中丟失的焦點並重新格式化文本框中的值，但綁定永遠不會被調用來更新我的對象。當我回到標籤頁時，該值被清空（或重置爲對象上的原始值）
任何想法爲什麼textbox在更改標籤頁時不會觸發Binding更新？
注意：這也會發生在連接到丟失焦點事件的常規文本框中。這似乎與點擊標籤有關。
[新增代碼]] 更多注意事項：1。 我動態創建的標籤（不知道這有什麼用它做與否） 2.我現在用的棱鏡上的標籤和控件庫
主窗口的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>
主窗口代碼隱藏
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ing objects
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;
}
}
}
郵政代碼另一個鏈接。 XAML的綁定和獲取和設置 – Paparazzi 2013-04-05 18:39:26
工作在一個簡化的版本。我會盡快對原始帖子進行修改。 – adondero 2013-04-05 20:17:09
如果您使用添加的代碼創建項目，則應該在選項卡1上看到兩個文本框（並且其值也顯示在Tab2上）。如果您將一個值放入第一個文本框和第二個選項卡並輸入一個值。在刪除第二個文本框之前，單擊該選項卡。標籤2將更新爲Textbox 1值，但不包含文本框2. – adondero 2013-04-05 21:40:21