Question

如何在DataGrid绑定中指定对象？我的数据网格有ItemsSource="{Binding Source=TripsCollection}"和AutoGenerateColumns="False"，列设置为：

<DataGrid.Columns>
     <DataGridTextColumn Header="ID" Binding="{Binding TripID}" IsReadOnly="True"></DataGridTextColumn>
     ...
</DataGrid.Columns>

但有错误：

System.Windows.Data错误：40：BindingExpression路径错误：'TripID' 'object'''Char'（HashCode = 7209070）'找不到属性。 BindingExpression：路径= TRIPID; DataItem ='Char'（HashCode = 7209070）; target元素是'TextBlock'（Name =''）;目标属性是'文字' （输入'String'）。

如何将对象设置为Trip对象？

DataContext类：

private ObservableCollection<Trip> _tripsCollection;
    public ObservableCollection<Trip> TripsCollection
    {
        get { return _tripsCollection; }
        set { _tripsCollection = value; NotifyPropertyChanged("TripsCollection"); }
    }

旅行课程：

[Table(Name="Trips")]
public class Trip
{
    private uint _tripID;
    private string _start;
    private string _end;
    private DateTime _date;
    private double _length;
    private string _note;
    private uint _carID = 0;
    private EntityRef<Car> _Car;

    ..and properties for this fields..
}

设置DataContext

public MainWindow()
{
    InitializeComponent();
    string connString = @"Data Source=.\SQLEXPRESS; Integrated security=SSPI; Connect Timeout=30"; // User Instance=True";
    conn = new SqlConnection(connString);
    conn.Open();

    LogBookViewModel lbvm = new LogBookViewModel(conn);
    DataContext = lbvm;
}

Answer 1

您必须在ItemsSource中更改绑定：

ItemsSource="{Binding Source=TripsCollection}"

到此：

ItemsSource="{Binding TripsCollection}"

如果您将来遇到绑定问题，请尝试使用snoop。

如何在datagrid绑定中指定对象

1 个答案: