将可见性属性用于多个用户控件 wpf

Question

我有一个场景，我需要根据它们的可见性显示多个用户控件属性并在单击下一个按钮时显示下一个可见控件。我已经在堆栈面板中添加了所有用户控件，这似乎不是一个好主意，我认为它确实会影响应用程序的性能。有人可以帮助我指导什么是定义这种情况的最佳方式。

 <StackPanel Grid.Row="3" Grid.Column="0" Margin="4 4 28 0" ScrollViewer.CanContentScroll="True">
                <Border BorderThickness="3" BorderBrush="LightGray" >
                    <StackPanel>
                    <controls:ICUC x:Name="ICU" BorderBrush="CadetBlue" Visibility="{Binding Visibilityicuc}"    ScrollViewer.VerticalScrollBarVisibility="Visible" Foreground="Black" VerticalAlignment="Center"  Height="210"  />
                        <controls:J1939 x:Name="J1939eng" BorderBrush="CadetBlue" Visibility="{Binding Visibilityj1939}"  ScrollViewer.VerticalScrollBarVisibility="Visible" Foreground="Black" VerticalAlignment="Center"  Height="210"  />
                    <controls:p_code x:Name="pcodengg" BorderBrush="CadetBlue" Visibility="{Binding Visibilitypcode}"   ScrollViewer.VerticalScrollBarVisibility="Visible" Foreground="Black" VerticalAlignment="Center"  Height="210"  />
                        <controls:Diagnostic_Developer x:Name="diagdev" BorderBrush="CadetBlue" Visibility="{Binding Visibilitysgdd}"   ScrollViewer.VerticalScrollBarVisibility="Visible" Foreground="Black" VerticalAlignment="Center" Height="Auto" Width="Auto"/>
                    </StackPanel>
                </Border>
            </StackPanel>

Answer 1

最近刚在工作中实施了完全相同的事情。这是您的代码的改编版本，希望对您有所帮助。

视图模型：

public class ExampleClass
{
    private int section { get; set; }

    public Visibility Visibilityicuc { get; set; } //presume first section
    public Visibility Visibilityj1939 { get; set; } //presume second section
    public Visibility Visibilitypcode { get; set; } //presume third section
    public Visibility Visibilitysgdd { get; set; } //presume fourth section

    public DelegateCommand NextButtonDelegateCommand { get; set; }

    public ExampleClass()
    {
        NextButtonDelegateCommand = new DelegateCommand(Next);
        section = 1; //indicates in first section
    }

    private void SetSectionVisibility(int currSection)
    {
        if (currSection == 1) // if first section
        {
            Visibilityicuc = Visibility.Visible; //section 1
            Visibilityj1939 = Visibility.Hidden;
            Visibilitypcode = Visibility.Hidden;
            Visibilitysgdd = Visibility.Hidden;
        }
        else if (currSection == 2)
        {
            Visibilityicuc = Visibility.Hidden;
            Visibilityj1939 = Visibility.Visible; //section 2
            Visibilitypcode = Visibility.Hidden;
            Visibilitysgdd = Visibility.Hidden;
        }
        else if (currSection == 3)
        {
            Visibilityicuc = Visibility.Hidden;
            Visibilityj1939 = Visibility.Hidden;
            Visibilitypcode = Visibility.Visible; //section 3
            Visibilitysgdd = Visibility.Hidden;
        }
        else if (section == 4)
        {
            Visibilityicuc = Visibility.Hidden;
            Visibilityj1939 = Visibility.Hidden;
            Visibilitypcode = Visibility.Hidden;
            Visibilitysgdd = Visibility.Visible; //section 4
        }
    }

    private void Next()
    {
        if (section == 1)
            SetSectionVisibility(2); //move to next section
        else if (section == 2)
            SetSectionVisibility(3);
        else if (section == 3)
            SetSectionVisibility(4);
        //else if (section == 4)
            //end! special event? unsure
    }
}

我还会对您当前的 XAML 代码做一些细微的更新，以确保其正常工作！也就是说，确保您的绑定采用以下格式：

Visibility="{Binding Visibilityicuc, Mode=TwoWay, Fallbackvalue=Visibility.Hidden}"

通过设置项目的默认状态，它将不可见（显然使第 1 部分 Visibility.Visible，而不是隐藏！）。如果您也熟悉 PropertyChanged 事件，我建议您使用它们在特定部分的可见性发生变化时通知您的视图。如果您不熟悉，请回复，我将为您提供代码的实施示例。

谢谢！希望这对您有所帮助

将可见性属性用于多个用户控件 wpf

using the visibility property for multiple usercontrol wpf

c#

wpf

user-controls

visibility

将可见性 属性 用于多个用户控件 wpf

using the visibility property for multiple usercontrol wpf

c#

wpf

user-controls

visibility

将可见性属性用于多个用户控件 wpf