如何在 DataGrid 绑定中指定对象?我的数据网格有ItemsSource="{Binding Source=TripsCollection}"
andAutoGenerateColumns="False"
和 Columns 设置为:
<DataGrid.Columns>
<DataGridTextColumn Header="ID" Binding="{Binding TripID}" IsReadOnly="True"></DataGridTextColumn>
...
</DataGrid.Columns>
但是有错误:
System.Windows.Data 错误:40:BindingExpression 路径错误:在“对象”“Char”(HashCode=7209070)上找不到“TripID”属性。绑定表达式:路径=TripID;DataItem='Char' (HashCode=7209070); 目标元素是'TextBlock'(名称='');目标属性是“文本”(类型“字符串”)。
如何将对象设置为 Trip 对象?
数据上下文类:
private ObservableCollection<Trip> _tripsCollection;
public ObservableCollection<Trip> TripsCollection
{
get { return _tripsCollection; }
set { _tripsCollection = value; NotifyPropertyChanged("TripsCollection"); }
}
旅行等级:
[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..
}
设置数据上下文
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;
}