c# – 从csv生成列表到列表框

public class TransformerStation : ViewModelBase
{
    private string _Name;
    public string Name
    {
        get { return this._Name; }
        set { this._Name = value; RaisePropertyChanged(); }
    }

    private string _Radial;
    public string Radial
    {
        get { return this._Radial; }
        set { this._Radial = value; RaisePropertyChanged(); }
    }

    private string _Area;
    public string Area
    {
        get { return this._Area; }
        set { this._Area = value; RaisePropertyChanged(); }
    }

    public TransformerStation(string name,string radial,string area)
    {
        this.Name = name;
        this.Radial = radial;
        this.Area = area;
    }

}

我注意到的第二件事是你在加载数据时似乎正在过滤数据,这表示每次用户按下按钮时都会重新加载数据.除非您拥有非常大量的数据,否则您可以将整个内容保存在内存中并在加载后对其进行过滤.如果您需要在运行时动态创建按钮,字典不仅会使过滤过程更快,而且还会为您提供数据集中所有径向的列表：

public Dictionary<string,List<TransformerStation>> ReadCSV(string fileName)
    {

        string[] lines = File.ReadAllLines(System.IO.Path.ChangeExtension(fileName,Encoding.UTF8);
        return lines.Select(line =>
        {
            string[] data = line.Split(';');
            return new TransformerStation(data[0],data[2]);
        })
        .GroupBy(ts => ts.Radial)
        .ToDictionary(g => g.Key,g => g.ToList());
    }

回到MainViewModel,您需要加载数据并将其存储在某个地方(即AllStations),您需要一个属性,如“SelectedRadial”,您为响应用户按下按钮而设置,另一个(“CurrentStations”)是AllStations的过滤版本：

private Dictionary<string,List<TransformerStation>> _AllStations;
    public Dictionary<string,List<TransformerStation>> AllStations
    {
        get { return this._AllStations; }
        private set { this._AllStations = value; RaisePropertyChanged(); }
    }


    private string _SelectedRadial;
    public string SelectedRadial
    {
        get { return this._SelectedRadial; }
        set
        {
            this._SelectedRadial = value;
            RaisePropertyChanged();
            this.CurrentStations = this.AllStations[value];
        }
    }

    private List<TransformerStation> _CurrentStations;
    public List<TransformerStation> CurrentStations
    {
        get { return this._CurrentStations; }
        private set { this._CurrentStations = value; RaisePropertyChanged(() => this.CurrentStations); }
    }

    public ICommand RadialCommand {get { return new RelayCommand<string>(OnRadialCommand); }}
    private void OnRadialCommand(string radial)
    {
        this.SelectedRadial = radial;
    }


    public MainViewModel()
    {
        this.AllStations = ReadCSV(@"data.csv");
    }

然后,只需要绑定一些最小的XAML来生成按钮(再次,这是可选的)并显示您的数据：

<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition />
    </Grid.ColumnDefinitions>

    <ListBox ItemsSource="{Binding AllStations.Keys}">
        <ListBox.ItemTemplate>
            <ItemContainerTemplate>
                <Button Command="{Binding Path=DataContext.RadialCommand,RelativeSource={RelativeSource AncestorType={x:Type ListBox}}}" CommandParameter="{Binding}">
                    <TextBlock Text="{Binding}" />
                </Button>
            </ItemContainerTemplate>
        </ListBox.ItemTemplate>
    </ListBox>

    <ListView Grid.Column="1" ItemsSource="{Binding CurrentStations}" >
        <ListView.View>
            <GridView>
                <GridViewColumn Header="Nettstasjon" Width="100" DisplayMemberBinding="{Binding Path=Name}"/>
                <GridViewColumn Header="Omr?de" Width="100" DisplayMemberBinding="{Binding Path=Area}"/>
                <GridViewColumn Header="Radial" Width="100" DisplayMemberBinding="{Binding Path=Radial}"/>
            </GridView>
        </ListView.View>
    </ListView>

</Grid>

结果：