EFCoreObjectSpace.CreateObject(Type) Method

Creates an object of the specified type.

Namespace: DevExpress.ExpressApp.EFCore

Assembly: DevExpress.ExpressApp.EFCore.v23.2.dll

NuGet Package: DevExpress.ExpressApp.EFCore

Declaration

C#

public override object CreateObject(
    Type objectType
)

VB.NET

Public Overrides Function CreateObject(
    objectType As Type
) As Object

Parameters

Name	Type	Description
objectType	Type	The type of the object to be created.

Returns

Type	Description
Object	A created object of the specified type.

Remarks

This method calls the CreateObject(Type) method and throws an exception if the specified type is not registered.

The following example shows how to use this method:

C#

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Actions;
using DevExpress.ExpressApp.EFCore;
using DevExpress.Persistent.Base;
// ...
public class AddDepartmentController : ObjectViewController<DetailView, Contact> {
    public AddDepartmentController() {
        ParametrizedAction addDepartmentAction = new ParametrizedAction(
            this, "AddDepartment", PredefinedCategory.Edit, typeof(string));
        addDepartmentAction.Execute += AddDepartmentAction_Execute;
    }
    private void AddDepartmentAction_Execute(object sender, ParametrizedActionExecuteEventArgs e) {
        using (EFCoreObjectSpace objectSpace = (EFCoreObjectSpace)Application.CreateObjectSpace(typeof(Department))) {
            Department department = (Department)objectSpace.CreateObject(typeof(Department));
            department.Title = e.ParameterCurrentValue as string;
            objectSpace.CommitChanges();
        }
        View.Refresh();
    }
}

VB.NET

Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.Actions
Imports DevExpress.ExpressApp.EFCore
Imports DevExpress.Persistent.Base
' ...
Public Class AddDepartmentController
    Inherits ObjectViewController(Of DetailView, Contact)

    Public Sub New()
        Dim addDepartmentAction As New ParametrizedAction(Me, "AddDepartment", PredefinedCategory.Edit, GetType(String))
        AddHandler addDepartmentAction.Execute, AddressOf AddDepartmentAction_Execute
    End Sub
    Private Sub AddDepartmentAction_Execute(ByVal sender As Object, ByVal e As ParametrizedActionExecuteEventArgs)
        Using objectSpace As EFCoreObjectSpace = CType(Application.CreateObjectSpace(GetType(Department)), EFCoreObjectSpace)
            Dim department As Department = objectSpace.CreateObject(Of Department)()
            department.Title = TryCast(e.ParameterCurrentValue, String)
            objectSpace.CommitChanges()
        End Using
        View.Refresh()
    End Sub
End Class