[英]The "Content" property is defined more than once
我正在尝试创建一个 gridview ,我可以在其中显示列表中的所有用户,并且 VS 向我返回以下错误:
XLS050:多次定义“内容”属性
XAML 代码:
<Page
x:Class="AppTeste.UsersGrid"
Background="{ThemeResource SystemAltMediumHighColor}">
<Page.Resources>
<DataTemplate x:Key ="ImageTextTemplate"/>
</Page.Resources>
<GridView
x:Name="ContentGridView2"
ItemsSource="{x:Bind Users}"
ItemTemplate="{StaticResource ImageTextTemplate}"
IsItemClickEnabled="True"
CanDragItems="True"
AllowDrop="False"
CanReorderItems="False"
SelectionMode="Single"
FlowDirection="LeftToRight"/>
<Grid AutomationProperties.Name = '{x:Bind Name}' Width = '280'>
<Grid.ColumnDefinitions>
<ColumnDefinition Width = 'Auto'/>
<ColumnDefinition Width = '*'/>
</Grid.ColumnDefinitions>
<!--<Image Source = '' Height = '100' Stretch = 'Fill' VerticalAlignment = 'Top'/>-->
<StackPanel Grid.Column = '1' Margin = '8,0,0,8'>
<TextBlock Text = '{x:Bind Name}' Style = '{ThemeResource SubtitleTextBlockStyle}' Margin = '0,0,0,8'/>
<StackPanel Orientation = 'Horizontal'>
<TextBlock Text = '{x:Bind Email}' Style = '{ThemeResource CaptionTextBlockStyle}'/>
<TextBlock Text = ' Views ' Style = '{ThemeResource CaptionTextBlockStyle}'/>
</StackPanel>
<StackPanel Orientation = 'Horizontal'>
<TextBlock Text = '{x:Bind ID}' Style = '{ThemeResource CaptionTextBlockStyle}'/>
<TextBlock Text = 'ID' Style = '{ThemeResource CaptionTextBlockStyle}'/>
</StackPanel>
</StackPanel>
</Grid>
C# Class:
public sealed partial class UsersGrid : Page
{
public List<User> Users { get; set; }
public UsersGrid()
{
Users = new List<User>();
for (int i = 0; i < 20; i++)
{
Users.Add(new User() { ID = i, Name = $"Utilizador{i}", Email = $"Utillizador{i}@servidor.pt" });
}
this.InitializeComponent();
}
}
我无法弄清楚我做错了什么,因为我使用的是来自 Microsoft XAML Control Gallery 的几乎未经编辑的 GridView 模板,即使它完全未经编辑,它也会返回相同的错误。
问题是Page
只能有一个元素作为其内容。 在这种情况下,您有两个 - GridView
和Grid
。
要解决此问题,请将两者包装在另一个布局元素中,例如Grid
。 一般来说,确保Page
只有一个孩子。
更新:重新阅读代码后,您似乎实际上希望Grid
成为GridView
的ItemTemplate
。 在这种情况下,它将如下所示(您需要将YOURMODELTYPE
替换为您的实际项目类型):
<GridView
x:Name="ContentGridView2"
ItemsSource="{x:Bind Users}"
ItemTemplate="{StaticResource ImageTextTemplate}"
IsItemClickEnabled="True"
CanDragItems="True"
AllowDrop="False"
CanReorderItems="False"
SelectionMode="Single"
FlowDirection="LeftToRight">
<GridView.ItemTemplate>
<DataTemplate x:DataType="YOURMODELTYPE">
<Grid AutomationProperties.Name = '{x:Bind Name}' Width = '280'>
<Grid.ColumnDefinitions>
<ColumnDefinition Width = 'Auto'/>
<ColumnDefinition Width = '*'/>
</Grid.ColumnDefinitions>
<!--<Image Source = '' Height = '100' Stretch = 'Fill' VerticalAlignment = 'Top'/>-->
<StackPanel Grid.Column = '1' Margin = '8,0,0,8'>
<TextBlock Text = '{x:Bind Name}' Style = '{ThemeResource SubtitleTextBlockStyle}' Margin = '0,0,0,8'/>
<StackPanel Orientation = 'Horizontal'>
<TextBlock Text = '{x:Bind Email}' Style = '{ThemeResource CaptionTextBlockStyle}'/>
<TextBlock Text = ' Views ' Style = '{ThemeResource CaptionTextBlockStyle}'/>
</StackPanel>
<StackPanel Orientation = 'Horizontal'>
<TextBlock Text = '{x:Bind ID}' Style = '{ThemeResource CaptionTextBlockStyle}'/>
<TextBlock Text = 'ID' Style = '{ThemeResource CaptionTextBlockStyle}'/>
</StackPanel>
</StackPanel>
</Grid>
</DataTemplate>
<GridView.ItemTemplate>
</GridView>
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