我在輔助 TabItem 中有一個 DataGrid，我想將視圖模型中的一些數據綁定到標題。我能夠將數據綁定到主 TabItem 中的 DataGrid 標題，但相同的代碼不適用于輔助 TabItem。我遵循了以下問題的答案，但它仍然不起作用，我不確定出了什么問題。我不太確定我的數據上下文是否不正確或者我的綁定設置是否正確。在非主 TabItem 內時，綁定在 DataGrid 列標題中不起作用這是我的代碼：XAML<Window xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit" x:Class="TestWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" Title="Test Window" Height="645" Width="900"> <StackPanel Orientation="Vertical"> <TabControl> <TabItem Name="Primary_Tab" Header="Primary Tab"> <!--Mock Data Grid--> </TabItem> <TabItem Name="Secondary_Tab" Header="Secondary Tab"> <DataGrid Height="500" ItemsSource="{Binding GridDetails}" HorizontalAlignment="Left" VerticalAlignment="Top" AutoGenerateColumns="False" CanUserAddRows="False"> <DataGrid.Resources> <local:BindingProxy x:Key="proxy" Data="{Binding}" /> </DataGrid.Resources> <DataGrid.Columns> <DataGridTextColumn x:Name="Name" Header="Name" Binding="{Binding Path='Name', Mode=OneTime}" IsReadOnly="True" Width="200" /> <DataGridTextColumn x:Name="ID" Header="ID" Binding="{Binding Path='ID', Mode=OneTime}" IsReadOnly="True" Width="100"> <DataGridTextColumn.ElementStyle> <Style TargetType="{x:Type TextBlock}"> <Setter Property="HorizontalAlignment" Value="Center" /> </Style> </DataGridTextColumn.ElementStyle>
1 回答
呼啦一陣風
TA貢獻1802條經驗 獲得超6個贊
我終于設法解決了綁定問題。看起來我有一堆不必要的綁定上下文代碼，它們干擾了代理綁定。對于將來遇到同樣問題的任何人來說，這對我有用。請注意，我根本不必更改視圖模型或 BindingProxy 類。只需要在 XAML 部分做一些工作。
<Window xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
x:Class="TestWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mxlns:local="clr-namespace:MyNamespace"
mc:Ignorable="d"
Title="Test Window" Height="645" Width="900">
<StackPanel Orientation="Vertical">
<TabControl>
<TabItem Name="Primary_Tab" Header="Primary Tab">
<!--Mock Data Grid-->
</TabItem>
<TabItem Name="Secondary_Tab" Header="Secondary Tab">
<DataGrid Height="500" ItemsSource="{Binding GridDetails}" HorizontalAlignment="Left" VerticalAlignment="Top" AutoGenerateColumns="False" CanUserAddRows="False">
<DataGrid.Resources>
<local:BindingProxy x:Key="proxy" Data="{Binding}" />
</DataGrid.Resources>
<DataGrid.Columns>
<DataGridTextColumn x:Name="Name" Header="Name" Binding="{Binding Path='Name', Mode=OneTime}" IsReadOnly="True" Width="200" />
<DataGridTextColumn x:Name="ID" Header="ID" Binding="{Binding Path='ID', Mode=OneTime}" IsReadOnly="True" Width="100">
<DataGridTextColumn.ElementStyle>
<Style TargetType="{x:Type TextBlock}">
<Setter Property="HorizontalAlignment" Value="Center" />
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
<DataGridTextColumn x:Name="NumClaims" Binding="{Binding Path='NumClaims', Mode=OneTime}" IsReadOnly="True" Width="100">
<DataGridTextColumn.Header>
<StackPanel>
<TextBlock Text="Claims"/>
<TextBlock Text="{Binding Path=Data.TotalClaims, UpdateSourceTrigger=PropertyChanged, Source={StaticResource proxy}}" />
</StackPanel>
</DataGridTextColumn.Header>
<DataGridTextColumn.ElementStyle>
<Style TargetType="{x:Type TextBlock}">
<Setter Property="HorizontalAlignment" Value="Center" />
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
<DataGridTextColumn x:Name="NewClaims" Binding="{Binding Path='NumNewClaims', Mode=OneTime}" IsReadOnly="True" Width="80">
<DataGridTextColumn.Header>
<StackPanel>
<TextBlock Text="New Claims"/>
<TextBlock Text="{Binding Path=Data.TotalNewClaims, UpdateSourceTrigger=PropertyChanged, Source={StaticResource proxy}}" />
</StackPanel>
</DataGridTextColumn.Header>
<DataGridTextColumn.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Setter Property="Background" Value="{Binding NumNewClaims}"/>
</Style>
</DataGridTextColumn.CellStyle>
<DataGridTextColumn.ElementStyle>
<Style TargetType="{x:Type TextBlock}">
<Setter Property="HorizontalAlignment" Value="Center" />
</Style>
</DataGridTextColumn.ElementStyle>
</DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
</TabItem>
</TabControl>
</StackPanel>
</Window>
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