现在,如果我更改一个标识符的值,我想要另一个值更新为默认值.但是,如果我更改了我的标识符值并设置了其他属性的默认值 – 我的DataGrid不会更新.只有当我点击单元格,那么在失去焦点后才能更新.

如何自动更新视图？

我想问题是,我不想更新该零件的直接属性,而是更新该零件属性的列表中的属性.

视图

<DataGrid>
    <DataGridTemplateColumn Header="Company">
        <DataGridTemplateColumn.CellEditingTemplate>
             <DataTemplate>
                  <ComboBox x:Name="CompanyEditComboBox" 
                            ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type DataGrid}},Path=DataContext.Companies}" 
                            SelectedItem="{Binding Company,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" 
                           SelectionChanged = "CompanyEditComboBox_SelectionChanged" />
            </DataTemplate>
         </DataGridTemplateColumn.CellEditingTemplate>
         <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                 <TextBlock Text="{Binding Company}" />
            </DataTemplate>
         </DataGridTemplateColumn.CellTemplate>
     </DataGridTemplateColumn>


    <DataGridTemplateColumn Header="CompanyType">
         <DataGridTemplateColumn.CellEditingTemplate>
              <DataTemplate>
                    <ComboBox x:Name="CompanyTypeEditComboBox" 
                                      ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type DataGrid}},Path=DataContext.CompanyTypes}" 
                                      SelectedItem="{Binding IdentificationCompanyType,UpdateSourceTrigger=PropertyChanged}" />
              </DataTemplate>
          </DataGridTemplateColumn.CellEditingTemplate>
          <DataGridTemplateColumn.CellTemplate>
              <DataTemplate>
                 <TextBlock Text="{Binding IdentificationCompanyType,Mode=OneWay,UpdateSourceTrigger=PropertyChanged}" />
              </DataTemplate>
          </DataGridTemplateColumn.CellTemplate>
       </DataGridTemplateColumn>
</DataGrid>

查看代码后

private void CompanyEditComboBox_SelectionChanged(object sender,SelectionChangedEventArgs e)
{
    var vm = (Partviewmodel)DataContext;
    var Box = (ComboBox) sender;
    var c = (Company) Box.SelectedItem;
    vm.SetDefaultCompanyType(c);
}

视图模型

public void SetDefaultCompanyType(Company c)
{
    SelectedIdentification.IdentificationCompanyType = c.DefaultCompanyType;
    OnPropertyChanged("IdentificationCompanyType");
}