I am a beginner with Entity Framework. I am building a WPF app. Following is my model class:
[Table("Vehicle")]
public class Vehicle
{
[Key]
public int VehicleId { get; set; }
[Column("LicencePlateNumber", TypeName = "ntext")]
[MaxLength(100)]
public string LicencePlateNumber { get; set; }
[Column("LicencePlateState", TypeName = "ntext")]
[MaxLength(100)]
public string LicencePlateState { get; set; }
[Column("Make", TypeName = "ntext")]
[MaxLength(100)]
public string Make { get; set; }
[Column("Other", TypeName = "ntext")]
[MaxLength(100)]
public string Other { get; set; }
[Column("Model", TypeName = "ntext")]
[MaxLength(100)]
public string Model { get; set; }
[Column("Style", TypeName = "ntext")]
[MaxLength(100)]
public string Style { get; set; }
[Column("Color", TypeName = "ntext")]
[MaxLength(100)]
public string Color { get; set; }
[Column("PurchaseYear", TypeName = "int")]
public int PurchaseYear { get; set; }
[Column("InsurnaceCompanyName", TypeName = "ntext")]
[MaxLength(100)]
public string InsurnaceCompanyName { get; set; }
[Column("InsurnaceCompanyNumber", TypeName = "ntext")]
[MaxLength(100)]
public string InsurnaceCompanyNumber { get; set; }
}
I am trying to retrieve data from this table in datagrid.
using (var context = new TransportContext())
{
var vehicleList = from v in context.Vehicles
select new
{
Number = v.LicencePlateNumber,
Make = v.Make,
Model = v.Model,
Year = v.PurchaseYear
};
DG_Details.ItemsSource = vehicleList;
DG_Details.Items.Refresh();
}
But I am getting an XAMLParseException
. On the Otherhand if I try this then it works:
using (var context = new TransportContext())
{
var projectionQuery = from v in context.Vehicles
select v;
var vehicleList = projectionQuery.ToList<Vehicle>();
DG_Details.ItemsSource = vehicleList;
DG_Details.Items.Refresh();
}
But I want to retrieve only 4 columns not all. Need Help!!
Try this :
var vehicleList = (from v in context.Vehicles
select new
{
Number = v.LicencePlateNumber,
Make = v.Make,
Model = v.Model,
Year = v.PurchaseYear
}).ToList();
DG_Details.ItemsSource = vehicleList;
DG_Details.Items.Refresh();
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