c# - 使用ObservableCollection绑定(bind)WPF DataGrid组合框列的问题

使用以下模型绑定(bind)WPF组合框列时出现问题:

public class Game
{
    public string Name;
    ObservableCollection<Player> Players{get; set;}
}

public class Player
{
    public int ID;
    public string PlayerName;

    public List<string> AllSelectionStatus = new List<string> {"Yes", "No", "Waiting"};

    public string PlayerSelectionStatus;
}

public class PlayerModel
{
    ObservableCollection<Game> Games  {get; set;}
}

我需要在WPF DataGrid中显示上述结构，如下所示。



每个组合框的“ItemSource”属性值均由AllSelectionStatus设置，而“SelectedItem”属性值由PlayerSelectionStatus设置。
这是我的XAML代码。

<DataGrid Name="dgRowDetails" Background="Transparent" Foreground="Black" SelectionMode="Single" HeadersVisibility="Column"
        ItemsSource="{Binding Games[0].Players}">
<DataGrid.Resources>
<Style x:Key="DataGridComboBoxColumnStyle0" BasedOn="{StaticResource BaseComboBoxBoxStyle}" TargetType="ComboBox">
    <Setter Property="ItemsSource" Value="{Binding AllSelectionStatus, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
    <Setter Property="SelectedItem" Value="{Binding PlayerSelectionStatus, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
    <Style.Triggers>
    <DataTrigger Binding="{Binding IsVisible}" Value="False">
        <Setter Property="Visibility" Value="Collapsed" />

    </DataTrigger>
    <DataTrigger Binding="{Binding IsSystemEnabled}" Value="False">
        <Setter Property="IsEnabled" Value="False" />
    </DataTrigger>
    </Style.Triggers>
</Style>

<Style x:Key="DataGridComboBoxColumnStyle1" BasedOn="{StaticResource BaseComboBoxBoxStyle}" TargetType="ComboBox">
    <Setter Property="ItemsSource" Value="{Binding AllSelectionStatus,  Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
    <Setter Property="SelectedItem" Value="{Binding PlayerSelectionStatus, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
    <Style.Triggers>
    <DataTrigger Binding="{Binding IsVisible}" Value="False">
        <Setter Property="Visibility" Value="Collapsed" />
    </DataTrigger>
    <DataTrigger Binding="{Binding IsSystemEnabled}" Value="False">
        <Setter Property="IsEnabled" Value="False" />
    </DataTrigger>
    </Style.Triggers>
<!-- The 3rd Combobox style not shown as it is similar to the one above-->
</Style>

此XAML的问题在于，Game2和Game3组合框没有自己的PlayerSelectionStatus。 Game2和Game3都获得Game1 PlayerSelectionStatus。

需要帮助解决此问题。感谢你的帮助。

最佳答案

只需在IsSynchronizedWithCurrentItem样式内将false设置为ComboBox即可。

<Setter Property="IsSynchronizedWithCurrentItem" Value="False"/>

以您的示例为例:

<DataGrid Name="dgRowDetails" Background="Transparent" Foreground="Black" SelectionMode="Single" HeadersVisibility="Column"
        ItemsSource="{Binding Games[0].Players}">
<DataGrid.Resources>
<Style x:Key="DataGridComboBoxColumnStyle0" BasedOn="{StaticResource BaseComboBoxBoxStyle}" TargetType="ComboBox">
    <Setter Property="ItemsSource" Value="{Binding AllSelectionStatus, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
    <Setter Property="SelectedItem" Value="{Binding PlayerSelectionStatus, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
    <Setter Property="IsSynchronizedWithCurrentItem" Value="False"/>
    <Style.Triggers>
    <DataTrigger Binding="{Binding IsVisible}" Value="False">
        <Setter Property="Visibility" Value="Collapsed" />

    </DataTrigger>
    <DataTrigger Binding="{Binding IsSystemEnabled}" Value="False">
        <Setter Property="IsEnabled" Value="False" />
    </DataTrigger>
    </Style.Triggers>
</Style>

<Style x:Key="DataGridComboBoxColumnStyle1" BasedOn="{StaticResource BaseComboBoxBoxStyle}" TargetType="ComboBox">
    <Setter Property="ItemsSource" Value="{Binding AllSelectionStatus,  Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" />
    <Setter Property="SelectedItem" Value="{Binding PlayerSelectionStatus, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
    <Setter Property="IsSynchronizedWithCurrentItem" Value="False"/>
    <Style.Triggers>
    <DataTrigger Binding="{Binding IsVisible}" Value="False">
        <Setter Property="Visibility" Value="Collapsed" />
    </DataTrigger>
    <DataTrigger Binding="{Binding IsSystemEnabled}" Value="False">
        <Setter Property="IsEnabled" Value="False" />
    </DataTrigger>
    </Style.Triggers>
<!-- The 3rd Combobox style not shown as it is similar to the one above-->
</Style>

关于c# - 使用ObservableCollection绑定(bind)WPF DataGrid组合框列的问题，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/51794956/