我有以下資源:資源風格是不是在DataTemplate中
<UserControl.Resources>
<Style TargetType="{x:Type TextBox}" >
<Setter Property="Background" Value="#FFFFBF" />
<Setter Property="IsEnabled" Value="{Binding Path=EntryEnabled, Mode=TwoWay}" />
</Style>
<DataTemplate x:Key="CommodityTemplate">
<Grid Width="218" HorizontalAlignment="Right">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="30"/>
<ColumnDefinition Width="30"/>
</Grid.ColumnDefinitions>
<Border Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="4" BorderBrush="Black" BorderThickness="0,0,0,.5" Background="LightCyan" />
<TextBlock Grid.Column="0" Text="{Binding Path=Item_Name}" HorizontalAlignment="Stretch" VerticalAlignment="Center" FontSize="14" />
<StackPanel Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Center" Orientation="Vertical" Margin="2,0" >
<TextBlock Text="{Binding Path=Size}" HorizontalAlignment="Right" FontSize="8" />
<TextBlock Text="{Binding Path=Unit}" HorizontalAlignment="Right" FontSize="8" />
</StackPanel>
<TextBox Grid.Column="2" Text="{Binding Path=Qty_Order, Mode=TwoWay}" FontSize="12" Margin="2,1" />
<TextBox Grid.Column="3" Text="{Binding Path=Qty_Filled, Mode=TwoWay}" FontSize="12" Margin="2,1" IsEnabled="{Binding Path=EntryEnabled, Mode=TwoWay}" />
</Grid>
</DataTemplate>
<DataTemplate x:Key="CategoryTemplate">
<Grid Width="225">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="30"/>
<ColumnDefinition Width="30"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="40" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Border Grid.Row="0" Grid.Column="0" Grid.RowSpan="2" Grid.ColumnSpan="3" BorderBrush="Black" BorderThickness=".5" Background="AliceBlue"/>
<Border Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="3" BorderBrush="Black" BorderThickness="0,0,0,.5" />
<Border Grid.Row="0" Grid.Column="1" BorderBrush="Black" BorderThickness=".5,0" />
<TextBlock Grid.Column="0" Text="{Binding Path=Category.Description}" HorizontalAlignment="Left" VerticalAlignment="Center" FontSize="14" FontWeight="Bold" TextWrapping="Wrap" Margin="5,0"/>
<TextBlock Grid.Column="1" Text="Quantity Ordered" FontSize="7" TextWrapping="Wrap" HorizontalAlignment="Center" VerticalAlignment="Center" >
<TextBlock.LayoutTransform>
<RotateTransform Angle="-90"/>
</TextBlock.LayoutTransform>
</TextBlock>
<TextBlock Grid.Column="2" Text="Quantity filled" FontSize="7" TextWrapping="Wrap" HorizontalAlignment="Center" VerticalAlignment="Center" >
<TextBlock.LayoutTransform>
<RotateTransform Angle="-90"/>
</TextBlock.LayoutTransform>
</TextBlock>
<ListView Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3" ItemsSource="{Binding Path=Items, Mode=TwoWay}" ItemTemplate="{StaticResource CommodityTemplate}" />
</Grid>
</DataTemplate>
</UserControl.Resources>
在我的控制,我有無數的TextBox控件。
然後我有以下LiewView控件,它使用CategoryTemplate。該模板包含另一個利用CommodityTemplate的ListView控件。
<ListView Grid.Row="1" Grid.Column="1" ItemsSource="{Binding Path=Category_List}" ItemTemplate="{StaticResource CategoryTemplate}"
ScrollViewer.VerticalScrollBarVisibility="Disabled" Background="LightGray" >
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Vertical" />
</ItemsPanelTemplate>
</ListView.ItemsPanel>
</ListView>
我也有一個CheckBox控件,如果選中,我希望所有的TextBox控件都被禁用。
<CheckBox Grid.Row="3" Grid.Column="1" Content="Has Been Picked-Up" FlowDirection="RightToLeft" IsChecked="{Binding Path=Received, Mode=TwoWay}"
HorizontalAlignment="Right" VerticalAlignment="Center" Margin="20,0" Padding="5,0" IsEnabled="{Binding Path=CBrec_Enabled, Mode=TwoWay}" />
Received和EntryEnabled屬性可以在我的ViewModel中找到。
#region Received
/// <summary>ViewModel property: Received of type: Boolean points to OrderForm.Received</summary>
public Boolean Received
{
get
{
if (OrderForm == null) return false;
return OrderForm.Received;
}
set
{
if (OrderForm == null) return;
OrderForm.Received = value;
OnPropertyChanged("Received");
OnPropertyChanged("EntryEnabled");
}
}
#endregion
#region EntryEnabled
/// <summary>Property EntryEnabled of type Boolean</summary>
public Boolean EntryEnabled
{
get
{
if (OrderForm == null) return false;
return OrderForm.Received == false;
}
set
{
OnPropertyChanged("EntryEnabled");
}
}
#endregion
當我選中該複選框,所有TextBox控件的禁用如預期,除了在CommodityTemplate發現文本框控件。有人能告訴我我做錯了什麼嗎?我將不勝感激。
這將綁定到'EntryEnabled'上文本框的'DataContext',這將是'的DataTemplate ''DataContext' - DataTemplate所顯示的類實例。 'CommodityTemplate'顯示什麼類?它有一個'EntryEnabled'屬性嗎?我在這裏沒有看到任何其他*模板中的任何TextBox控件。我的猜測是'EntryEnabled'是'UserControl'的視圖模型的屬性,而不是商品類的屬性。解決方案可能是'Value =「{Binding DataContext.EntryEnabled,RelativeSource = {RelativeSource AncestorType = UserControl}}」'。 –
Bonus:快速簡便的找出方法是綁定出錯:'「{Binding EntryEnabled,PresentationTraceSources.TraceLevel = High}」',然後在運行時觀察VS中的輸出窗格。它會告訴你它解決這件事的一切,以及它失敗的地方。由於Bindings具有最少的設計時支持或編譯時檢查,所以這非常有用。 –
這樣做!非常感謝你。 – Rod