WPF GridControl 数据绑定

Posted 2022-12-02 wxstar8

最近在做一个工具如下：根据电压、容值、公差去匹配 "K3规格型号”，如果不存在则将 “电压”、“容值”、“公差”字体颜色改为红色。

当时遇到了这个问题，因为Column "功率"已经绑定了一个字段 “Power”，想要根据CellColor改变颜色，在cell里面无法获取到“CellColor”的数据，这个问题花了一天多时间

才找到答案：Foreground="Binding RowData.Row.CellColor,Converter=StaticResource ColorChoiceConvert" ,绑定了这一行的数据，这样在转换器里就可以获取到cellColor属性的数据，做出判断。

 <dxg:GridColumn Header="功率" FieldName="Power" HorizontalHeaderContentAlignment="Center">
           <dxg:GridColumn.CellTemplate>
               <DataTemplate>
                    < TextBlock Text="Binding Path=Value" Foreground="Binding RowData.Row.CellColor,Converter=StaticResource ColorChoiceConvert"/>
                </DataTemplate>
          </dxg:GridColumn.CellTemplate>
   </dxg:GridColumn>

前端xaml代码如下：

<UserControl xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid" 
             x:Class="LayoutTool.Controls.ucResistanceManage"
             xmlns:dxdo="http://schemas.devexpress.com/winfx/2008/xaml/docking"
             xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars" 
             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" 
             xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"        
             xmlns:entity="clr-namespace:LayoutTool.Entity" 
             xmlns:convert="clr-namespace:LayoutTool.CustomConvert"
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <UserControl.Resources>
        <convert:ColorChoiceConvert x:Key="ColorChoiceConvert"/>
        <convert:OhmAndPfColorConvert x:Key="OhmAndPfColorConvert"/>
        <convert:ToleranceColorConvert x:Key="ToleranceColorConvert"/>
    </UserControl.Resources>
<dxg:GridControl Name="dgResistance"  >
   <dxg:GridControl.View>
     <dxg:TableView   Name="tvResistance" AllowPerPixelScrolling="True" AllowEditing="False" ShowTotalSummary="False" ShowGroupPanel="False">
     </dxg:TableView>
       </dxg:GridControl.View>     
          <dxg:GridControl.Columns>
            <dxg:GridColumn Header="物料编码"  FieldName="Code" HorizontalHeaderContentAlignment="Center"/>
            <dxg:GridColumn Header="label信息" FieldName="LabelMessage" HorizontalHeaderContentAlignment="Center"/>
             <dxg:GridColumn Header="功率" FieldName="Power" HorizontalHeaderContentAlignment="Center">
                <dxg:GridColumn.CellTemplate>
                    <DataTemplate>
                       <TextBlock Text="Binding Path=Value" Foreground="Binding RowData.Row.CellColor,Converter=StaticResource ColorChoiceConvert"/>
                     </DataTemplate>
                 </dxg:GridColumn.CellTemplate>
              </dxg:GridColumn>
              <dxg:GridColumn Header="阻值" FieldName="ResistanceValue" HorizontalHeaderContentAlignment="Center">
                 <dxg:GridColumn.CellTemplate>
                   <DataTemplate>
                     <TextBlock Text="Binding Path=Value" Foreground="Binding RowData.Row.CellColor,Converter=StaticResource OhmAndPfColorConvert"/>
                     </DataTemplate>
                   </dxg:GridColumn.CellTemplate>
              </dxg:GridColumn>
              <dxg:GridColumn Header="公差" FieldName="Tolerance" HorizontalHeaderContentAlignment="Center">
                <dxg:GridColumn.CellTemplate>
                  <DataTemplate>
                    <TextBlock Text="Binding Path=Value" Foreground="Binding RowData.Row.CellColor,Converter=StaticResource ToleranceColorConvert"/>
                  </DataTemplate>
                </dxg:GridColumn.CellTemplate>
              </dxg:GridColumn>
               <dxg:GridColumn Header="K3规格型号" FieldName="K3Model"  Width="*"  HorizontalHeaderContentAlignment="Center"/>
          </dxg:GridControl.Columns>
                 
      </dxg:GridControl>

（2）上面我用的时GridControl控件，当使用DataGrid控件时，解决上述的问题可以使用如下方法：

              

  <DataGrid x:Name="dgResistance" >
                    <DataGrid.Columns>
                        <DataGridTemplateColumn Header="功率"
                                   Width="2*">
                            <DataGridTemplateColumn.CellTemplate>
                                <DataTemplate>
                                    <TextBlock Text="Binding  DataContext,RelativeSource= RelativeSource AncestorType=DataGridRow,Converter=StaticResource ColorChoiceConvert"/>
                                </DataTemplate>
                            </DataGridTemplateColumn.CellTemplate>
                        </DataGridTemplateColumn>
                    </DataGrid.Columns>
                </DataGrid>