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IObjectSpace.CreateObject(Type) Method

Creates an object of the specified type.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v19.1.dll

Declaration

object CreateObject(
    Type type
)
Function CreateObject(
    type As Type
) As Object

Parameters

Name Type Description
type Type

A Type object which is the type of the object to be created.

Returns

Type Description
Object

An object that represents the created object of the specified type.

Remarks

The following example uses a Parametrized Action to create a new Department object and refresh the Detail View. The new department becomes available in the Contact.Department Lookup List View.

using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Actions;
using DevExpress.Persistent.Base;
using MainDemo.Module.BusinessObjects;
// ...
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(IObjectSpace objectSpace = Application.CreateObjectSpace(typeof(Department))) {
            Department department = objectSpace.CreateObject<Department>();
            department.Title = e.ParameterCurrentValue as string;
            objectSpace.CommitChanges();
        }
        View.Refresh();
    }
}

If you implement the IObjectSpace interface in the BaseObjectSpace class' descendant, you don't have to override the CreateObject method entirely. The BaseObjectSpace.CreateObject method invokes a protected virtual BaseObjectSpace.CreateObjectCore method and then sets the returned object modified by calling the BaseObjectSpace.SetModified method for it. So, you should only override the CreateObjectCore method.

The created object will be saved to the database when calling the IObjectSpace.CommitChanges method.

See Also