Question

我有一个具有多个按钮的用户控件，并且在应用程序中我在3个窗口上使用此用户控件，...当应用程序运行但是我要显示时，此3窗口中用户控件的编辑按钮是折叠的当我打开一个特定的窗口时，在所有窗口中编辑按钮，如果此窗口关闭，则再次折叠所有编辑按钮...

用户控制

<StackPanel Orientation="Horizontal">
    <Button Content="Edit" x:Name="edit" Height="50"  Width="100" Margin="0" Click="Edit_Click" Visibility="{Binding editButtonVisibility}"/>
    <Button Content="Show History" x:Name="Personal" Height="50"  Width="100" Margin="0" Click="ShowHistory_Click" Visibility="{Binding ShowHistoryButtonVisibility}" />
    <Button Content="Show Customer" x:Name="Customer" Height="50"  Width="100" Margin="0" Click="ShowCustomer_Click" Visibility="{Binding ShowCustomerButtonVisibility}"/>
</StackPanel>

该用户控件的后台代码为上面的每个Bindings添加依赖属性：

 public Visibility editButtonVisibility
{
    get { return (Visibility)GetValue(editButtonVisibilityProperty); }
    set { SetValue(editButtonVisibilityProperty, value); }
}

// Using a DependencyProperty as the backing store for editButtonVisibility.  This enables animation, styling, binding, etc...
public static readonly DependencyProperty editButtonVisibilityProperty =
    DependencyProperty.Register("editButtonVisibility", typeof(Visibility), typeof(UserControl1), new PropertyMetadata(Visibility.Visible));


public Visibility ShowHistoryButtonVisibility
{
    get { return (Visibility)GetValue(ShowHistoryButtonVisibilityProperty); }
    set { SetValue(ShowHistoryButtonVisibilityProperty, value); }
}

// Using a DependencyProperty as the backing store for ShowHistoryButtonVisibility.  This enables animation, styling, binding, etc...
public static readonly DependencyProperty ShowHistoryButtonVisibilityProperty =
    DependencyProperty.Register("ShowHistoryButtonVisibility", typeof(Visibility), typeof(UserControl1), new PropertyMetadata(Visibility.Visible));



public Visibility ShowCustomerButtonVisibility
{
    get { return (Visibility)GetValue(ShowCustomerButtonVisibilityProperty); }
    set { SetValue(ShowCustomerButtonVisibilityProperty, value); }
}

// Using a DependencyProperty as the backing store for ShowCustomerButtonVisibility.  This enables animation, styling, binding, etc...
public static readonly DependencyProperty ShowCustomerButtonVisibilityProperty =
    DependencyProperty.Register("ShowCustomerButtonVisibility", typeof(Visibility), typeof(UserControl1), new PropertyMetadata(Visibility.Visible));

该应用程序中的

<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:UI_UserControls="clr-namespace:Anet.UI.UserControls;assembly=Anet.UI.UserControls" 
xmlns:local="clr-namespace:test" x:Class="test.Window1"
Title="Window1" Height="300" Width="308">
<Grid>
  <UI_UserControls: UserControl1 editButtonVisibility="Collapsed" ShowCustomerButtonVisibility="Collapsed" />
 </Grid>

和窗口2和窗口3中的相同代码

我试图添加属性更改回调，但没有工作

    public static readonly DependencyProperty editButtonVisibilityProperty =
        DependencyProperty.Register("editButtonVisibility", typeof(Visibility), typeof(UserControl1), new PropertyMetadata(ProductionMenuChanged));


    private static void ProductionMenuChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {

        UserControlBtu = d as UserControl1;


            if (Window1.IsVisibleProperty == null)
            {
                UserControlBtu.edit.Visibility = Visibility.Collapsed;
            }
            else if (Window1.IsVisibleProperty != null)

            {
                 UserControlBtu.edit.Visibility = Visibility.Visible;
            }

    }

P.S：用户控件不是本地..它是WPF用户控件库项目

Answer 1

发现了这个问题。只需进行以下更改即可。

1.给UserControl一个名字

X:name="AnyName"

2.将按钮可见性属性绑定如下

Visibility="{Binding ElementName=AnyName, Path=editButtonVisibility}"

注意：用您的用户控件名替换AnyName。

如何在应用程序的运行时更改用户控件中按钮的Visibility属性？

1 个答案: