WPF DataGrid-禁用某些列选择 [英] WPF DataGrid - Disable certain column selection

问题描述

我想禁用对Columns Field3&的选择Field4
（见图片）

I would like to disable selection for Columns Field3 & Field4 (see image)

Field1& 2值是由用户输入的，取决于它来计算Field3& 4。

Field1&2 values are entered by the user, depending on it Field3&4 are calculated.

我想要的-

1. 使用'tab'在输入单元格之间移动时，所选内容应从第1行第2字段移动到第2行第1字段。


2. 使用箭头移动时，字段3&不能选择字段4。


3. 可以删除行（提及这一点，因为我不确定实现其他几点后的行为）。

这是我当前的XAML-

This is my XAML presently -

<Window x:Class="OrderCalculator.MainWindow"
    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"
    xmlns:local="clr-namespace:OrderCalculator"
    mc:Ignorable="d"
    Title="Order Estimate" Background="LightGray" Height="500" Width="800" Name="UI">
<Grid>
    <DataGrid x:Name="ItemGrid" CanUserAddRows ="True" ItemsSource="{Binding ElementName=UI, Path=Items, Mode=TwoWay}" AutoGenerateColumns="False" HorizontalAlignment="Left" 
              Height="410" Margin="10,10,10,10" VerticalAlignment="Top" Width="420" HeadersVisibility="Column">
        <DataGrid.Resources>
            <Style TargetType="{x:Type DataGridColumnHeader}">
                <Setter Property="Background" Value="DarkGray"/>
                <Setter Property="FontWeight" Value="Bold"/>
                <Setter Property="BorderThickness" Value="0,0,1,2"/>
                <Setter Property="BorderBrush" Value="Black"/>
                <Setter Property="HorizontalContentAlignment" Value="Center"/>
            </Style>
        </DataGrid.Resources>
        <DataGrid.Columns>
            <DataGridTextColumn Header="Field1" Binding="{Binding Path=field1, UpdateSourceTrigger=PropertyChanged}" Width="70"/>
            <DataGridTextColumn Header="Field2" Binding="{Binding Path=field2, UpdateSourceTrigger=PropertyChanged}" Width="90"/>
            <DataGridTextColumn Header="Field3" Binding="{Binding Path=field3, UpdateSourceTrigger=PropertyChanged}" IsReadOnly="True" Width="110"/>
            <DataGridTextColumn Header="Field4" Binding="{Binding Path=field4, UpdateSourceTrigger=PropertyChanged}" IsReadOnly="True" Width="*"/>
        </DataGrid.Columns>
    </DataGrid>

</Grid>

更新

玩转之后，我能够确保不会通过鼠标单击来选择它。但是使用箭头键和选项卡仍然可以实现。到目前为止，我已经知道了-
在XAML中的DataGrid.Resources-

After playing around I have been able to make sure that it doesn't get selected with mouse click. But its still possible with arrow keys and tab. So far I have this - Added the following in XAML under DataGrid.Resources-

<Style x:Key="DisableSelection" TargetType="DataGridCell">
    <Setter Property="IsHitTestVisible" Value="False"/>
</Style>

然后对于要禁用选择的列-

And then for the columns that I wanted to disable selection -

<DataGridTextColumn Header="Field3" CellStyle="{StaticResource DisableSelection}" Binding="{Binding Path=field3, UpdateSourceTrigger=PropertyChanged}" IsReadOnly="True" Width="120"/>

但是如上所述，这并不能完全解决问题。

But as mentioned this doesn't solve it completely.

推荐答案

解决了！
将样式修改为-

Solved it! Modified the Style to -

<Style x:Key="DisableSelection" TargetType="DataGridCell">
   <Setter Property="Focusable" Value="False"/> //Disables all selection methods (including keyboard inputs)
   <Setter Property="Background" Value="Transparent"/>
   <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
   <Setter Property="BorderBrush" Value="Transparent"/>
</Style>

将 Focusable属性设置为false可以解决问题。 3行代码的其余部分确保该单元格看起来无法选择=没有突出显示，也没有选择粗边框，同时确保该文本仍然显示。

Setting 'Focusable' property to false did the trick. The rest of the 3 lines of code ensure the cell looks un-selectable = no highlights nor selected thick borders while ensuring the text still appears.

将此样式添加到列中我想完全禁用选择-

Added this style to the column I wanted to disable selection entirely -

<DataGridTextColumn Header="Field1" CellStyle="{StaticResource DisableSelection}"...../>

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