嗨,伙计们:) 我正在开发一个处理组框和包装面板的 wpf 应用程序。看着标题,它似乎很简单,但是在动态生成一组组框之后,我发现它很难。这是场景:
我的项目中有 2 个 xaml 文件。一个是CodecView.xaml
和CodecWidgetView.xaml
。我在启动时动态生成了 4 个分组框,如下所示:
CodecView.xaml:
<UserControl.Resources>
<DataTemplate x:Key="CWDataTemplate">
<WrapPanel>
<TextBlock Text="{Binding Description}" Margin="0,0,0,0"/>
<local:CodecWidgetView Margin="5,10,5,5"/>
</WrapPanel>
</DataTemplate>
</UserControl.Resources>
<Grid Grid.Row="0" >
<Grid Name="NumberofCodecs" >
<ItemsControl ItemTemplate="{StaticResource CWDataTemplate}" ItemsSource="{Binding CodecWidgets}"/>
</Grid>
</Grid>
CodecWidgetView.xaml:
<Grid>
<GroupBox Height="Auto" HorizontalAlignment="Stretch" Margin="5,5,5,5" Name="groupBox1" VerticalAlignment="Stretch" Width="Auto">
<Grid>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<ToggleButton Name="FrequencyBox" Content="Master" Grid.Column="1" Height="25" Width="50" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="0" />
<ComboBox Grid.Column="2" ItemsSource="{Binding ModesList}" SelectedItem="{Binding SelectedModesList, Mode=OneWayToSource}" SelectedIndex="2" Height="23" HorizontalAlignment="Center" Margin="0,0,0,0" Name="comboBox2" VerticalAlignment="Center" Width="80" />
<ComboBox Grid.Column="0" ItemsSource="{Binding FrequencyList}" SelectedItem="{Binding SelectedFrequencyList, Mode=OneWayToSource}" SelectedIndex="0" Height="23" HorizontalAlignment="Center" Margin="0,0,0,0" Name="comboBox1" VerticalAlignment="Center" Width="80" />
</Grid>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<RadioButton Style="{StaticResource {x:Type ToggleButton}}" Command="{Binding OneSixBitCommand}" Margin="0" Content="16 Bit" Name="OneSixBit" Height="25" Width="45" Grid.Column="0" HorizontalAlignment="Center" VerticalAlignment="Center" />
<RadioButton Style="{StaticResource {x:Type ToggleButton}}" Command="{Binding TwoZeroBitCommand}" Margin="0" Content="20 Bit" Name="TwoZeroBit" Height="25" Width="45" Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Center" />
<RadioButton Style="{StaticResource {x:Type ToggleButton}}" Command="{Binding TwoFourBitCommand}" Margin="0" Content="24 Bit" Name="TwoFourBit" Height="25" Width="45" Grid.Column="2" HorizontalAlignment="Center" VerticalAlignment="Center" />
<RadioButton Style="{StaticResource {x:Type ToggleButton}}" Command="{Binding ThreeTwoBitCommand}" Margin="0" Content="32 Bit" Name="ThreetwoBit" Height="25" Width="45" Grid.Column="3" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Grid>
<Grid Grid.Row="2">
<Label Name="BitDelay" Content="Bit Delay" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="0,0,205,0" Height="25" Width="55" />
<Slider Height="23" HorizontalAlignment="Center" Minimum="0.0" Maximum="255.0" TickFrequency="1.0" Margin="95,0,0,0" Name="bitdelayslider" VerticalAlignment="Center" Width="160" />
<TextBox Name="BitDelayValue" IsReadOnly="True" Text="{Binding ElementName=bitdelayslider,Path=Value, StringFormat=0.0}" Width="40" Height="20" Margin="0,0,110,0" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Grid>
<Grid Grid.Row="3">
<Label Name="DBGain" Content="DB Gain" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="0,0,205,0" Height="25" Width="55" />
<TextBox Name="DBGainValue" IsReadOnly="True" Text="{Binding ElementName=dbgainslider,Path=Value, StringFormat=0.0}" Width="40" Height="20" Margin="0,0,110,0" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Slider Height="23" HorizontalAlignment="Center" Minimum="0.0" Maximum="59.5" TickFrequency="0.5" Margin="95,0,0,0" Name="dbgainslider" VerticalAlignment="Center" Width="160" />
</Grid>
</Grid>
</GroupBox>
</Grid>
CodecViewModel.cs:是CodecView.xaml的viewmodel类
public ObservableCollection<CodecWidgetViewModel> CodecWidgets { get; set; }
public CodecViewModel()
{
CodecWidgets = new ObservableCollection<CodecWidgetViewModel>();
CodecWidgets.Add(new CodecWidgetViewModel { Description = "Location 8 - Dig Mic A" });
CodecWidgets.Add(new CodecWidgetViewModel { Description = "Location 9 - Dig Mic B" });
CodecWidgets.Add(new CodecWidgetViewModel { Description = "Location 10 - PCM A 3P3V" });
CodecWidgets.Add(new CodecWidgetViewModel { Description = "Location 11 - PCM B 3P3V" });
}
CodecWidgetViewModel.cs:是CodecWidgetView.xaml的viewmodel类
private string _description;
public string Description
{
get
{
return _description;
}
set
{
_description = value;
OnPropertyChanged("Description");
}
}
这在启动时会动态生成 4 个组框,一个在另一个之下。因为我的窗口大小是 minheight = 300 和 minwidth = 300,所以我设置了 scrollviewer。由于我使用了 Wrappanel,所以当我拉伸它时,它的行为应该符合预期。那是当宽度被拉伸时,第二个分组框应该到第一行的右侧,下面也会发生同样的情况。
启动时:
当宽度被拉伸时:
预期行为:
因此,看看预期的行为,我想实现 wrappanel 的行为:) 即使我使用了 wrappanel 但它并没有按预期工作。请帮忙 :)