c# - GridView 组合框数据绑定(bind) WPF

Question

我在使用 WPF XAML 中的 DataGrid 内部的 Combobox 进行数据绑定(bind)时遇到了一些问题。

我有包含 ObservableCollection 的信号类。

public struct RawVal
{
    public string name;  //Name of the Value
    public int value;    // Value
}


public class Signal
{
    public string Name { get; set; }
    public Int32 Value { get; set; }
    public ObservableCollection<RawVal> rawValue { get; set; }
};

在 Stettings 窗口中有

public partial class Settings : Window
{      
  public ObservableCollection<Signal> tempSigList { get; set; }
  public ObservableCollection<RawVal> tempRawVal { get; set; }
  .........
  .........
this.grdSignal.ItemsSource = tempSigList;

我的 XAML 如下所示:

<DataGrid ItemsSource="{Binding}" Name="grdSignal">
 <DataGrid.Columns>    
    <DataGridTemplateColumn Header="   RAW Value ">
      <DataGridTemplateColumn.CellTemplate>
          <DataTemplate>
              <ComboBox ItemsSource="{Binding tempRawVal  }" SelectedItem="Binding name" />
           </DataTemplate>
         </DataGridTemplateColumn.CellTemplate>
       </DataGridTemplateColumn>
  </DataGrid.Columns>
</DataGrid>

但是没有任何结果ㅠㅠㅠ我在 stackoverflow 上尝试了很多示例，但没有任何结果。欢迎任何建议或解决方案。谢谢

Answer 1

这里:

窗口:

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    tempSigList = new ObservableCollection<Signal>();
    tempSigList.Add(new Signal { Name = "Name 1", Value = 1, rawValue = new ObservableCollection<RawVal> { new RawVal { name = "combo 1", value = 1 }, new RawVal { name = "combo 2", value = 2 } } });
    tempSigList.Add(new Signal { Name = "Name 2", Value = 2, rawValue = new ObservableCollection<RawVal> { new RawVal { name = "combo 3", value = 3 }, new RawVal { name = "combo 4", value = 4 } } });
    tempSigList.Add(new Signal { Name = "Name 3", Value = 3, rawValue = new ObservableCollection<RawVal> { new RawVal { name = "combo 5", value = 5 }, new RawVal { name = "combo 6", value = 6 } } });
    tempSigList.Add(new Signal { Name = "Name 4", Value = 4, rawValue = new ObservableCollection<RawVal> { new RawVal { name = "combo 7", value = 7 }, new RawVal { name = "combo 8", value = 8 } } });
    tempSigList.Add(new Signal { Name = "Name 5", Value = 5, rawValue = new ObservableCollection<RawVal> { new RawVal { name = "combo 9", value = 9 }, new RawVal { name = "combo 10", value = 10 } } });

    dataGrid1.ItemsSource = tempSigList;
}

XAML:

<DataGrid x:Name="dataGrid1" ItemsSource="{Binding}">
    <DataGrid.Columns>
        <DataGridTemplateColumn Header="RAW Value">
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <ComboBox ItemsSource="{Binding rawValue}"  SelectedItem="{Binding name}" DisplayMemberPath="name" />
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>
    </DataGrid.Columns>
</DataGrid>

我使用了 AutoGenerateColumns=true。您可以将其设置为 false 并且只显示您的 ComboBox 列。