我正在尝试将我的其中一个列上的数据绑定(bind)到我页面的 ViewModel 中的数据(与网格绑定(bind)到的对象相反)。
我下面推荐的是here , 无济于事。
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Content="{Binding ElementName=LayoutRoot, Path=DataContext.JUNK}"></Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
在我的 View 模型中
public string JUNK { get; set; }
在 ViewModel 的构造函数中设置为 "HELLO"
有人看到我做错了什么吗?
编辑
这是整个 XAML。相关栏目一直在底部,在网格中的网格中
另外 - 我无法再次将我的整个源代码放入此处(不确定它是 citrix 还是什么)但我采用了那个相同的精确绑定(bind)表达式但事实并非如此在数据网格的按钮上工作,然后我将它放到与网格分开的普通旧 TextBlock 的文本上,它就像一个魅力。我还在网格中添加了一个新的虚拟文本列,并对文本使用了相同的绑定(bind)表达式,但它仍然不 起作用。看起来这个绑定(bind)表达式没问题,但拒绝在网格附近的任何地方工作。
<UserControl x:Class="MainApp.WPF.ucFmvHistoryDisplayGrid"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="1000" x:Name="LayoutRoot">
<UserControl.Resources>
<Style x:Name="rightAlignedColumn" x:Key="rightAlignedColumn" TargetType="TextBlock">
<Setter Property="HorizontalAlignment" Value="Right" />
</Style>
<Style x:Name="centerAlignedColumn" x:Key="centerAlignedColumn" TargetType="TextBlock">
<Setter Property="HorizontalAlignment" Value="Center" />
</Style>
</UserControl.Resources>
<Grid>
<DataGrid x:Name="dbTop" ItemsSource="{Binding PropertyGroupSource}" HorizontalAlignment="Left" Background="White" CanUserAddRows="False" CanUserDeleteRows="False" CanUserReorderColumns="False" CanUserResizeRows="False" IsReadOnly="True" AutoGenerateColumns="False" Grid.Row="1" Width="800">
<DataGrid.Columns>
<DataGridTextColumn Width="120" Header="Property Num" Binding="{Binding PropertyNum}"></DataGridTextColumn>
<DataGridTextColumn Width="120" Header="Alt Description" Binding="{Binding AltDescription}"></DataGridTextColumn>
<DataGridTextColumn Width="80" Header="County" Binding="{Binding County}"></DataGridTextColumn>
<DataGridTextColumn Width="100" Header="State" Binding="{Binding State}" ElementStyle="{StaticResource centerAlignedColumn}"></DataGridTextColumn>
<DataGridTextColumn Width="85" Header="Phase" Binding="{Binding Phase}"></DataGridTextColumn>
<DataGridTextColumn Width="85" Header="FMV" Binding="{Binding FmvTotal}"></DataGridTextColumn>
<DataGridTextColumn Width="100" Header="Assessed Value" Binding="{Binding AssessedValueTotal}"></DataGridTextColumn>
</DataGrid.Columns>
<DataGrid.RowDetailsTemplate>
<DataTemplate>
<Border Margin="5" BorderBrush="Black" BorderThickness="1">
<DataGrid Margin="5" Background="White" CanUserAddRows="False" CanUserDeleteRows="False" CanUserReorderColumns="False" CanUserResizeRows="False" IsReadOnly="True" AutoGenerateColumns="False" Grid.Row="1" ItemsSource="{Binding PropertyFmvSource}">
<DataGrid.Columns>
<DataGridTextColumn Width="125" Header="County Acct Num" Binding="{Binding Property.CountyAccountNum, StringFormat=d}" ElementStyle="{StaticResource rightAlignedColumn}"></DataGridTextColumn>
<DataGridTextColumn Width="80" Header="City" Binding="{Binding Property.City, StringFormat=d}" ElementStyle="{StaticResource rightAlignedColumn}"></DataGridTextColumn>
<DataGridTextColumn Width="80" Header="Jurisdiction" Binding="{Binding Property.Jurisdiction, StringFormat=d}" ElementStyle="{StaticResource rightAlignedColumn}"></DataGridTextColumn>
<DataGridTextColumn Width="80" Header="FMV Date" Binding="{Binding MostRecentFMV.FMVDate, StringFormat=d}" ElementStyle="{StaticResource rightAlignedColumn}"></DataGridTextColumn>
<DataGridTextColumn Width="100" Header="FMV" Binding="{Binding MostRecentFMV.FMV, StringFormat=N0}" ElementStyle="{StaticResource rightAlignedColumn}"></DataGridTextColumn>
<DataGridTextColumn Width="85" Header="Assess Ratio" Binding="{Binding MostRecentFMV.AssessmentRatio, StringFormat=N3}" ElementStyle="{StaticResource rightAlignedColumn}"></DataGridTextColumn>
<DataGridTextColumn Width="105" Header="Assessed Value" Binding="{Binding MostRecentFMV.AssessedValue, StringFormat=N0}" ElementStyle="{StaticResource rightAlignedColumn}"></DataGridTextColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Button Content="{Binding ElementName=LayoutRoot, Path=DataContext.JUNK}"></Button>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
</Border>
</DataTemplate>
</DataGrid.RowDetailsTemplate>
</DataGrid>
</Grid>
最佳答案
使用 RelativeSource 绑定(bind)绑定(bind)到包含 DataGrid 的 DataContext 应该有效:
<Button Content="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGrid, AncestorLevel=2}, Path=DataContext.JUNK}"></Button>
当您嵌套 DataGrid 时,AncestorLevel 必须设置为“2”以绑定(bind)到最外层 DataGrid 的 DataContext。
关于c# - WPF DataGrid - 数据绑定(bind)列到页面的 ViewModel,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5046436/