XafApplication.CreateListView(IObjectSpace, Type, Boolean) Method

Creates a List View used for the objects of the specified type, by default.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v22.2.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

public ListView CreateListView(
    IObjectSpace objectSpace,
    Type objectType,
    bool isRoot
)

VB.NET

Public Function CreateListView(
    objectSpace As IObjectSpace,
    objectType As Type,
    isRoot As Boolean
) As ListView

Parameters

Name	Type	Description
objectSpace	IObjectSpace	An IObjectSpace object representing the Object Space used to retrieve objects from the database to the created List View’s Collection Source.
objectType	Type	A Type object specifying the business object type.
isRoot	Boolean	true, if the created List View is independent and owns the Object Space passed using the objectSpace parameter; false if the created List View is nested to another root View that owns the Object Space. This value is assigned to the View.IsRoot property.

Returns

Type	Description
ListView	A ListView object used to display the collection of objectType objects.

Remarks

If you need to create a List View using the information specified in the Application Model, use other CreateListView method overloads.

Pass true to the isRoot parameter if the new View owns the Object Space passed to the objectSpace parameter. If this Object Space already belongs to another View, pass false. Note that certain Controllers and Actions are deactivated in this case. See View.IsRoot for additional information. To avoid this, use the XafApplication.CreateObjectSpace or XafApplication.CreateNestedObjectSpace method to create a new Object Space, and pass this Object Space to the objectSpace parameter.

Note

Do not use another View’s View.ObjectSpace for the creation of a new root View in it. Instead, create a new Object Space using the XafApplication.CreateObjectSpace method for the new root View.

The following example creates a List View and displays it via a PopupWindowShowAction.

C#

using System;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Actions;
using DevExpress.Persistent.Base;
using DevExpress.Persistent.BaseImpl;
// ...
public class ShowListViewController : WindowController {
    public ShowListViewController() {
        PopupWindowShowAction showListViewAction = new PopupWindowShowAction(
            this, "ShowListView", PredefinedCategory.Edit);
        showListViewAction.CustomizePopupWindowParams += ShowListViewAction_CustomizePopupWindowParams;
    }
    private void ShowListViewAction_CustomizePopupWindowParams(object sender, CustomizePopupWindowParamsEventArgs e) {
        Type objectType = typeof(Person);
        IObjectSpace newObjectSpace = Application.CreateObjectSpace(objectType);
        e.View = Application.CreateListView(newObjectSpace, objectType, true);
    }
}

VB.NET

Imports System
Imports DevExpress.ExpressApp
Imports DevExpress.ExpressApp.Actions
Imports DevExpress.Persistent.Base
Imports DevExpress.Persistent.BaseImpl

Public Class ShowListViewController
    Inherits WindowController
    Public Sub New()
        Dim showListViewAction As New PopupWindowShowAction(Me, "ShowListView", PredefinedCategory.Edit)
        AddHandler showListViewAction.CustomizePopupWindowParams, _
            AddressOf ShowListViewAction_CustomizePopupWindowParams
    End Sub
    Private Sub ShowListViewAction_CustomizePopupWindowParams(ByVal sender As Object, _
        ByVal e As CustomizePopupWindowParamsEventArgs)
        Dim objectType As Type = GetType(Person)
        Dim newObjectSpace As IObjectSpace = Application.CreateObjectSpace(objectType)
        e.View = Application.CreateListView(newObjectSpace, objectType, True)
    End Sub
End Class

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the CreateListView(IObjectSpace, Type, Boolean) method.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

XAF_how-to-add-custom-buttons-actions-to-the-lookup-and-popup-windows/CS/WinSolution.Module.Win/PopupListViewController.cs#L17

private void showPopupAction_CustomizePopupWindowParams(object sender, CustomizePopupWindowParamsEventArgs e) {
    e.View = Application.CreateListView(e.Application.CreateObjectSpace(), typeof(Person), false);
}

VB.NET

XAF_how-to-add-custom-buttons-actions-to-the-lookup-and-popup-windows/VB/WinSolution.Module.Win/PopupListViewController.vb#L17

Private Sub showPopupAction_CustomizePopupWindowParams(ByVal sender As Object, ByVal e As CustomizePopupWindowParamsEventArgs)
    e.View = Application.CreateListView(e.Application.CreateObjectSpace(), GetType(Person), False)
End Sub