组合框选择上的动态控制集

Question

我有几个实例，其中用户可能需要根据组合框选择输入额外数据。必要文本框的数量会根据选择而变化（最少 1 个 - 最多 3 个）。为了使这些项目井井有条，我将它们放在 GroupBox 中。我需要的是实现这种效果的建议。我应该以编程方式将行添加到组框内的网格吗？我是否应该创建所有文本框和标签并在选择更改事件中更改可见性属性？我不太喜欢第二个想法，因为如果只需要一个文本字段，组框将被不适当地缩放。我意识到我的问题的一般背景，作为 WPF 的新手，我只需要一些关于最佳实践的建议来实现这一点。

更新我试图在选择更改时折叠行。这会删除内容，但仍会使我的组框保持相同大小。

 <GroupBox Name="gbCondensor" Height="Auto"  Header="Condensor"  
 FontSize="16" Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="2" 
 Margin="20,0,20,92" Grid.RowSpan="2">
        <Grid Name="grdCondensor" Margin="0,10,0,0" Height="auto">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <Label x:Name="lblCondensorTemp" Grid.Column="0" Grid.Row="0" 
 Content="Condensor Temperature" HorizontalAlignment="Center"  
 VerticalAlignment="Center" Height="32" Width="255"/>
            <ComboBox Name="cmbCondensorTemp" FontSize= "16" Width="200" 
 Grid.Column="1" Grid.Row="0" VerticalAlignment="Center" 
 HorizontalAlignment="Left" Margin="10,0" Height="30">
                <ComboBoxItem IsSelected="True">Constant</ComboBoxItem>
                <ComboBoxItem>Linear</ComboBoxItem>
                <ComboBoxItem>Switching</ComboBoxItem>
            </ComboBox>
            <Label Name="lblCondensorTempText" Content="Temperature" 
 VerticalAlignment="Center" HorizontalAlignment="Right" Grid.Column="0" 
 Grid.Row="2" ></Label>
            <TextBox Name="txtCondensorTemp" Grid.Column="1" Grid.Row="2" 
Background="Gray" VerticalAlignment="Center" HorizontalAlignment="Center"  
Width="73"></TextBox>
            <Label Name="lblEndCondTemp" Content="Temperature" 
VerticalAlignment="Center" HorizontalAlignment="Right" Grid.Column="0" 
Grid.Row="3" ></Label>
            <TextBox Name="txtEndCondTemp" Grid.Column="1" Grid.Row="3" 
Background="Gray" VerticalAlignment="Center" HorizontalAlignment="Center" 
Width="73"></TextBox>
            <Label Name="lblSwitchCondTemp" Content="Temperature" 
VerticalAlignment="Center" HorizontalAlignment="Right" Grid.Column="0" 
Grid.Row="4" ></Label>
            <TextBox Name="txtSwitchCondTemp" Grid.Column="1" Grid.Row="4" 
Background="Gray" VerticalAlignment="Center" HorizontalAlignment="Center" 
Width="73"></TextBox>                
</GroupBox>

用这个折叠代码中的行：

     void CheckCondensorComboBox(object sender, SelectionChangedEventArgs e)
    {

        if (cmbCondensorTemp.SelectedIndex == 0)
        {
            lblEndCondTemp.Visibility = Visibility.Collapsed;
            txtEndCondTemp.Visibility = Visibility.Collapsed;
            grdCondensor.RowDefinitions[3].Height = new GridLength(0);
            lblSwitchCondTemp.Visibility = Visibility.Collapsed;
            txtSwitchCondTemp.Visibility = Visibility.Collapsed;
            grdCondensor.RowDefinitions[4].Height = new GridLength(0);
        }
        else if (cmbCondensorTemp.SelectedIndex == 1)
        {

            lblEndCondTemp.Visibility = Visibility.Visible;
            txtEndCondTemp.Visibility = Visibility.Visible;
            grdCondensor.RowDefinitions[3].Height = new GridLength(30);
            lblSwitchCondTemp.Visibility = Visibility.Collapsed;
            txtSwitchCondTemp.Visibility = Visibility.Collapsed;
            grdCondensor.RowDefinitions[4].Height = new GridLength(0);
        }
        else if (cmbCondensorTemp.SelectedIndex == 2)
        {
            lblEndCondTemp.Visibility = Visibility.Visible;
            txtEndCondTemp.Visibility = Visibility.Visible;
            grdCondensor.RowDefinitions[3].Height = new GridLength(30);
            lblSwitchCondTemp.Visibility = Visibility.Visible;
            txtSwitchCondTemp.Visibility = Visibility.Visible;
            grdCondensor.RowDefinitions[4].Height = new GridLength(30);
        }

    }

我在这里想要的是一个组框，它可以根据每个用户选择所需的控件更改其高度。

Answer 1

你的两个想法都有道理。如果没有看到代码，这个问题有点难以具体回答，但一般来说，我喜欢首先考虑可维护性——代码通常被阅读的次数比编写的次数多得多。

我怀疑简单地折叠不需要的额外字段可能比创建额外字段并在运行时绑定它们更直接和可维护。

尝试一种方法，看看效果如何 - 不要花太多时间权衡。

组合框选择上的动态控制集

Dynamic Control sets on combobox selection

c#

wpf

combobox

wpf-controls