Question

无法在我的C＃代码中访问此reportCheckBox。

我可以在我的代码中访问ReportsListBox，但不能访问reportsCheckBox。

<ListBox x:Name="reportsListBox" Grid.Row="0"
                         Background="Transparent" BorderBrush="Transparent" ScrollViewer.HorizontalScrollBarVisibility="Hidden"
                         ItemTemplate="{Binding DynamicReportsList}" Visibility="Visible"  Foreground="WhiteSmoke" Grid.RowSpan="2" Margin="156,0,2,0" Grid.ColumnSpan="2" 
                         SelectionMode="Multiple">
                    <ListBox.Resources>
                        <Style TargetType="ListBoxItem">
                            <Setter Property="OverridesDefaultStyle" Value="True"/>
                            <Setter Property="SnapsToDevicePixels" Value="True"/>
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="ListBoxItem">
                                        <CheckBox x:Name="reportsCheckBox" Margin="5,2" Style="{StaticResource CheckboxStyle}"
                                              IsChecked="{Binding ElementName=DailyReports, Path=IsCheckedBoxChecked}"
                                              Foreground="WhiteSmoke"
                                              FontSize="14">
                                            <ContentPresenter />
                                        </CheckBox>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </ListBox.Resources>
                </ListBox>

所以基本上，我希望能够像这样访问我的复选框：

private void btnCancel_Event(object sender, EventArgs e)
{
    foreach (CheckBox c in reportsCheckBox)
    {
         c.isChecked = false;
    }
}

Answer 1

尝试一下：

[已更新]

不是直接添加字符串值，而是像这样使用 ListBoxItem ：

dialog

XAML：

reportsListBox.Items.Add("Item1"); // thrown exception
reportsListBox.Items.Add("Item2"); // thrown exception
reportsListBox.Items.Add("Item3"); // thrown exception

reportsListBox.Items.Add(new ListBoxItem {Content = "Item1" });
reportsListBox.Items.Add(new ListBoxItem {Content = "Item2" });
reportsListBox.Items.Add(new ListBoxItem {Content = "Item3" });

C＃：

<ListBox x:Name="reportsListBox" 
         Grid.Row="0"
         Background="Transparent" BorderBrush="Transparent" ScrollViewer.HorizontalScrollBarVisibility="Hidden"
         ItemTemplate="{Binding DynamicReportsList}" Visibility="Visible"  Foreground="WhiteSmoke" Grid.RowSpan="2" Margin="156,0,2,0" Grid.ColumnSpan="2" 
         SelectionMode="Multiple">
    <ListBox.Resources>
        <Style TargetType="ListBoxItem">
            <Setter Property="OverridesDefaultStyle" Value="True"/>
            <Setter Property="SnapsToDevicePixels" Value="True"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="ListBoxItem">

                        <CheckBox IsChecked="{Binding Path=IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"  
                                  Content="{Binding Path=Content,    RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"/>

                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </ListBox.Resources>

    <!-- This is my sample items -->
    <ListBoxItem Content="Item 1"/>
    <ListBoxItem Content="Item 2"/>
    <ListBoxItem Content="Item 3"/>
    <ListBoxItem Content="Item 4"/>
</ListBox>

输出：

Answer 2

因此，本文的第一个答案实际上解决了我的问题。 https://social.msdn.microsoft.com/Forums/vstudio/en-US/81e92a50-d0a2-4e70-93ab-e7b374858087/how-to-get-the-check-boxes-which-are-dynamically-created-in-xaml?forum=wpf

也可以代替cb.IsEnabled = false;我做了cb.IsChecked = false;此外，我从 AmRo的注释中设置了绑定。因此，有了适当的绑定，并借助了本文的帮助，这解决了我的问题。

XAML代码：

<ListBox x:Name="reportsListBox" Grid.Row="0"
                         Background="Transparent" BorderBrush="Transparent" ScrollViewer.HorizontalScrollBarVisibility="Hidden"
                         ItemTemplate="{Binding DynamicReportsList}" Visibility="Visible"  Foreground="WhiteSmoke" Grid.RowSpan="2" Margin="4,0,0,0" 
                         SelectionMode="Multiple" Grid.Column="1">
                    <ListBox.Resources>
                        <Style TargetType="ListBoxItem">
                            <Setter Property="OverridesDefaultStyle" Value="True"/>
                            <Setter Property="SnapsToDevicePixels" Value="True"/>
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="ListBoxItem">
                                        <CheckBox Name="reportsCheckBox" IsChecked="{Binding Path=IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"
                                                  Content="{Binding Path=Content, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"
                                                  Style="{StaticResource CheckboxStyle}" Foreground="WhiteSmoke" FontSize="20" IsEnabled="{Binding enabled}"/>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </ListBox.Resources>
                </ListBox>

C＃代码：

private void btnCancel_Event(object sender, EventArgs e)
{
    foreach (var item in reportsListBox.Items)
    {
        ListBoxItem lbi = reportsListBox.ItemContainerGenerator.ContainerFromItem(item) as ListBoxItem;
                    CheckBox cb = FindVisualChild<CheckBox>(lbi);
                    if (cb != null)
                        cb.IsChecked = false;
    }
}

如何在列表框内访问CheckBox名称？

2 个答案: