【发布时间】：2017-06-29 06:10:04
【问题描述】：
我正在开发一个利用交互行为打开/关闭 UI 元素的 UWP 应用程序。
作为一个小背景故事，我的应用程序之前使用复制/粘贴的 XAML 来为客户选择刀片视图和所有相关视图中的刀片。
在 XAML 中包含交互行为/触发器，它们会在完美运行的按钮单击时关闭一个刀片并打开另一个刀片。
考虑到在所有地方复制粘贴相同的 XAML 的混乱，我清理了那个 UI 部分并将其移动到它自己的用户控件中，我只是设法按照我需要的方式使用绑定和所有内容来工作。唯一的问题是我的交互行为/触发器不再起作用，因为它们是用户控件的一部分。
这是与按钮内的行为/触发器相关的特定 XAML：
<Button x:Name="CreatNewCustomer"
HorizontalAlignment="Stretch"
Content="New Customer"
VerticalAlignment="Stretch"
Height="45"
Background="#FF007ACC"
Width="auto"
Foreground="#FFCDCDCD"
Margin="5">
<interactivity:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="Click">
<core:ChangePropertyAction TargetObject="NewCustomerBlade"
PropertyName="IsOpen"
Value="True" />
</core:EventTriggerBehavior>
</interactivity:Interaction.Behaviors>
</Button>
这是我的整个用户控件：
<UserControl x:Class="myapp.Views.CustomerDatabaseControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:retailemployeetoolset.Views"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
xmlns:interactivity="using:Microsoft.Xaml.Interactivity"
xmlns:core="using:Microsoft.Xaml.Interactions.Core"
xmlns:models="using:myapp.Models"
mc:Ignorable="d"
d:DesignHeight="840"
d:DesignWidth="1320">
<Grid x:Name="AddCustomerBlades">
<controls:BladeView x:Name="CustomerSearchBladeview"
IsEnabled="True"
BladeMode="Fullscreen">
<controls:BladeItem x:Name="SearchCustomerBlade"
Width="1325"
Background="#FF1E1E1E"
Height="712"
TitleBarVisibility="Collapsed"
IsOpen="True"
BorderThickness="5"
BorderBrush="#FF707070">
<StackPanel>
<StackPanel Orientation="Horizontal"
Height="65">
<TextBlock Text="Customers"
FontSize="38"
Margin="10"
Foreground="#FFCDCDCD"
Width="825" />
<StackPanel Orientation="Horizontal"
Width="465">
<TextBlock Text="Search: "
FontSize="28"
Margin="5"
Foreground="#FFCDCDCD"
Width="90"
VerticalAlignment="Center" />
<TextBox x:Name="CustomerSearch"
TextWrapping="Wrap"
Height="46"
Width="350"
Margin="5" />
</StackPanel>
</StackPanel>
<StackPanel Orientation="Horizontal"
Margin="5"
HorizontalAlignment="Right">
<Button x:Name="CreatNewCustomer"
HorizontalAlignment="Stretch"
Content="New Customer"
VerticalAlignment="Stretch"
Height="45"
Background="#FF007ACC"
Width="auto"
Foreground="#FFCDCDCD"
Margin="5">
<interactivity:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="Click">
<core:ChangePropertyAction TargetObject="NewCustomerBlade"
PropertyName="IsOpen"
Value="True" />
</core:EventTriggerBehavior>
</interactivity:Interaction.Behaviors>
</Button>
<Button x:Name="CloseCustomerWindow"
HorizontalAlignment="Stretch"
Content="Close Window"
VerticalAlignment="Stretch"
Height="45"
Background="#FF007ACC"
Width="auto"
Foreground="#FFCDCDCD"
Margin="5" />
</StackPanel>
<StackPanel Margin="0,5"
Orientation="Horizontal">
<StackPanel Width="1307">
<GridView Name="CustomerList"
ItemsSource="{Binding CustomerDatabase}"
SelectedItem="{Binding SelectedCustomer, Mode=TwoWay}"
Width="auto"
Height="685"
Background="#FF2E2B2B"
BorderThickness="3"
BorderBrush="#FF707070"
Margin="10,0,8,0">
<GridView.Header>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="auto" />
<RowDefinition Height="8" />
</Grid.RowDefinitions>
<TextBlock Grid.Row="0"
Grid.Column="0"
Text="First Name"
TextAlignment="Center"
FontWeight="Bold"
FontSize="16"
Margin="7,0,0,1"
Foreground="#FFCDCDCD" />
<TextBlock Grid.Row="0"
Grid.Column="1"
Text="Last Name"
TextAlignment="Center"
FontWeight="Bold"
FontSize="16"
Margin="7,0,0,1"
Foreground="#FFCDCDCD" />
<TextBlock Grid.Row="0"
Grid.Column="2"
Text="Enail"
TextAlignment="Center"
FontWeight="Bold"
FontSize="16"
Margin="7,0,0,1"
Foreground="#FFCDCDCD" />
<TextBlock Grid.Row="0"
Grid.Column="3"
Text="Phone Number"
TextAlignment="Center"
FontWeight="Bold"
FontSize="16"
Margin="7,0,0,1"
Foreground="#FFCDCDCD" />
<TextBlock Grid.Row="0"
Grid.Column="4"
Text="Organization"
TextAlignment="Center"
FontWeight="Bold"
FontSize="16"
Margin="7,0,0,1"
Foreground="#FFCDCDCD" />
</Grid>
</GridView.Header>
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="Margin"
Value="7,0,0,1" />
<Setter Property="HorizontalAlignment"
Value="Center" />
</Style>
</GridView.ItemContainerStyle>
<GridView.ItemTemplate>
<DataTemplate x:DataType="models:Customer">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
<ColumnDefinition Width="254" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="45" />
</Grid.RowDefinitions>
<Border BorderThickness="2"
BorderBrush="#FF575454"
Grid.Column="0">
<TextBlock Text="{x:Bind CustomerFirstName}"
Foreground="#FFCDCDCD"
Width="auto"
Margin="0,8,0,-2"
TextAlignment="Center" />
</Border>
<Border BorderThickness="2"
BorderBrush="#FF575454"
Grid.Column="1">
<TextBlock Text="{x:Bind CustomerLastName}"
Foreground="#FFCDCDCD"
Width="auto"
Margin="0,10,0,0"
TextAlignment="Center" />
</Border>
<Border BorderThickness="2"
BorderBrush="#FF575454"
Grid.Column="2">
<TextBlock Text="{x:Bind CustomerEmail}"
Foreground="#FFCDCDCD"
Width="auto"
Margin="0,8,0,0"
TextAlignment="Center" />
</Border>
<Border BorderThickness="2"
BorderBrush="#FF575454"
Grid.Column="3">
<TextBlock Text="{x:Bind CustomerPhoneNumber}"
Foreground="#FFCDCDCD"
Width="auto"
TextAlignment="Center" />
</Border>
<Border BorderThickness="2"
BorderBrush="#FF575454"
Grid.Column="4">
<TextBlock Text="{x:Bind OrganizationName}"
Foreground="#FFCDCDCD"
Width="auto"
TextAlignment="Center" />
</Border>
</Grid>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
</StackPanel>
</StackPanel>
</StackPanel>
</controls:BladeItem>
<controls:BladeItem x:Name="CustomerAddBlade"
Width="1320"
Background="#FF1E1E1E"
Height="835"
TitleBarVisibility="Collapsed"
IsOpen="False"
BorderThickness="5"
BorderBrush="#FF707070">
<StackPanel>
<TextBlock Text="Add Customer"
FontSize="48"
Foreground="#FFCDCDCD"
Height="56"
Margin="15"
HorizontalAlignment="Left" />
<StackPanel HorizontalAlignment="Center"
Width="409">
<StackPanel Margin="10,0">
<TextBlock Text="Email Address:"
FontSize="22"
Foreground="#FFCDCDCD"
Height="36"
Margin="3" />
<TextBox x:Name="EmailBox"
TextWrapping="Wrap"
Height="50"
Margin="3" />
</StackPanel>
<StackPanel Margin="10,0">
<TextBlock Text="First Name:"
FontSize="22"
Foreground="#FFCDCDCD"
Height="36"
Margin="3" />
<TextBox x:Name="FirstNameBox"
TextWrapping="Wrap"
Height="50"
Margin="3" />
</StackPanel>
<StackPanel Margin="10,0">
<TextBlock Text="Last Name:"
FontSize="22"
Foreground="#FFCDCDCD"
Height="36"
Margin="3" />
<TextBox x:Name="LastNameBox"
TextWrapping="Wrap"
Height="50"
Margin="3" />
</StackPanel>
<StackPanel Margin="10,0">
<TextBlock Text="Phone Number:"
FontSize="22"
Foreground="#FFCDCDCD"
Height="36"
Margin="3" />
<TextBox x:Name="PhoneBox"
TextWrapping="Wrap"
Height="50"
Margin="3" />
</StackPanel>
<CheckBox x:Name="BusinessCustomerCheckbox"
Content="Business Customer"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Height="21"
Margin="10"
Foreground="#FFCDCDCD" />
<StackPanel x:Name="OrgNamePanel"
Visibility="Visible"
Margin="10,0">
<TextBlock Text="Organization Name:"
FontSize="22"
Foreground="#FFCDCDCD"
Height="36"
Margin="3" />
<TextBox x:Name="BusinessNameBox"
TextWrapping="Wrap"
Height="50"
Margin="3" />
</StackPanel>
<Button x:Name="AddNewCustomerButton"
HorizontalAlignment="Stretch"
Content="Add Customer"
VerticalAlignment="Stretch"
Height="60"
Background="#FF007ACC"
Foreground="#FFCDCDCD"
Margin="20">
</Button>
</StackPanel>
</StackPanel>
</controls:BladeItem>
</controls:BladeView>
</Grid>
在用户控件中使用行为时，是否需要做一些不同的事情？还是不能在用户控件中使用它们？
我可以在后面的代码中为用户控件创建属性来处理我的刀片的打开和关闭，但这感觉就像它会变得更加草率并且需要比使用行为所需的 8 行代码更多的代码。
编辑： 添加我收到的异常以防其他人搜索类似的错误。
“在 String 类型上找不到名为 Windows.UI.Xaml.PropertyPath 的属性。”
【问题讨论】：
-
其实我没看到你在哪里定义了NewCustomerBlade？span>
-
你说得对，我只是注意到我更改了刀片的名称，并没有更新 TargetObject="NewCustomerBlade"。但是，在您的解决方案之前，我遇到了一个我不再遇到的异常。
标签： c# xaml mvvm user-controls uwp