我有一個WPF數據網格的用戶控件。我使用元素主機在Windows窗體中使用此用戶控件。Windows窗體中WPF用戶控件的雙向DataBinding
我可以使用的ListCollectionView將數據綁定到用戶控件但是當我進行更新到DataGrid的變化不被反射回來。
我設置模式=雙向,但沒有用。
任何想法?
這裏是我的代碼示例:
UserControl.xaml
<my:DataGrid ItemsSource="{Binding}"
HorizontalScrollBarVisibility="Hidden" SelectionMode="Extended"
CanUserAddRows="False" CanUserDeleteRows="False"
CanUserResizeRows="False" CanUserSortColumns="False"
AutoGenerateColumns="False"
RowHeaderWidth="20" RowHeight="25" Width="Auto" Height="Auto"
RowStyle="{StaticResource RowSelected1}"
CellStyle="{StaticResource RowSelected}"
GridLinesVisibility="Horizontal" >
<my:DataGrid.GroupStyle>
<GroupStyle ContainerStyle="{StaticResource GroupHeaderStyle1}">
<GroupStyle.Panel>
<ItemsPanelTemplate>
<my:DataGridRowsPresenter/>
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</my:DataGrid.GroupStyle>
<my:DataGrid.Columns>
<Controls:LabelTextBoxColumn Header="Tread BarCode" Width="2*"
HorizontalAlignment="Left" VerticalAlignment="Center"
ElementStyle="{StaticResource BaseLabelCellStyle}"
EditingElementStyle="{StaticResource BaseTextBoxCellStyle}"
Binding="{Binding Name,Mode=TwoWay}"/>
在我的Windows窗體的frm1的代碼是:
this.sdaTrueName.Fill(this.dstrueSrch1.dtTrue);
view = new ListCollectionView(this.dstrueSrch1.dtTrue.ToList());
view.GroupDescriptions.Add(new PropertyGroupDescription("Name"));
UserControlABC.DataContext = view;
我必須將數據保存回我的數據庫。我正在使用數據集和數據表。
請幫我一下嗎?
我試圖調試我的程序,我在輸出窗口出現錯誤。
System.Windows.Data Warning: 52 : Created BindingExpression (hash=19378226) for Binding (hash=19699911)
System.Windows.Data Warning: 54 : Path: 'IsEnabled'
System.Windows.Data Warning: 56 : BindingExpression (hash=19378226): Default mode resolved to OneWay
System.Windows.Data Warning: 57 : BindingExpression (hash=19378226): Default update trigger resolved to PropertyChanged
System.Windows.Data Warning: 58 : BindingExpression (hash=19378226): Attach to System.Windows.Controls.TextBox.IsEnabled (hash=56309765)
System.Windows.Data Warning: 63 : BindingExpression (hash=19378226): Resolving source
System.Windows.Data Warning: 66 : BindingExpression (hash=19378226): Found data context element: TextBox (hash=56309765) (OK)
System.Windows.Data Warning: 67 : BindingExpression (hash=19378226): DataContext is null
System.Windows.Data Warning: 61 : BindingExpression (hash=19378226): Resolve source deferred
System.Windows.Data Warning: 63 : BindingExpression (hash=19378226): Resolving source
System.Windows.Data Warning: 66 : BindingExpression (hash=19378226): Found data context element: TextBox (hash=56309765) (OK)
System.Windows.Data Warning: 74 : BindingExpression (hash=19378226): Activate with root item dataTableExtrRow (hash=24854661)
System.Windows.Data Warning: 104 : BindingExpression (hash=19378226): At level 0 - for dataTableExtrRow.IsEnabled found accessor <null>
System.Windows.Data Error: 39 : BindingExpression path error: 'IsEnabled' property not found on 'object' ''dataTableExtrRow' (HashCode=24854661)'.
BindingExpression:Path=IsEnabled; DataItem='dtextruderWindupRow' (HashCode=24854661); target element is 'TextBox' (Name=''); target property is 'IsEnabled' (type 'Boolean')
System.Windows.Data Warning: 76 : BindingExpression (hash=19378226): TransferValue - got raw value {DependencyProperty.UnsetValue}
System.Windows.Data Warning: 84 : BindingExpression (hash=19378226): TransferValue - using fallback/default value 'True'
System.Windows.Data Warning: 85 : BindingExpression (hash=19378226): TransferValue - using final value 'True'"
這裏是我的資源窗口中的XAML代碼在我的用戶控制:
<Style x:Key="BaseTextBoxCellStyle" TargetType="{x:Type TextBox}">
<Setter Property="IsEnabled" Value="{Binding
IsEnabled,diag:PresentationTraceSources.TraceLevel=High}"/>
</Style>
<Style x:Key="BaseLabelCellStyle" TargetType="{x:Type Label}">
<Setter Property="IsEnabled" Value="{Binding IsEnabled}"/>
<Setter Property="Margin" Value="0,-3,0,0"/>
</Style>
這是我在我的WPF的DataGrid代碼:
<Controls:LabelTextBoxColumn
Header="Tread BarCode" Width="2*"
HorizontalAlignment="Left" VerticalAlignment="Center"
ElementStyle="{StaticResource BaseLabelCellStyle}"
EditingElementStyle="{StaticResource BaseTextBoxCellStyle}"
Binding="{Binding rollCallID,Mode=TwoWay}"/>
我不明白這錯誤。
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