ServiceSearchMode Enum

Lists values that specify whether a search for a service must be carried out within the current service container, or within the current and parent service containers.

Namespace: DevExpress.Mvvm

Assembly: DevExpress.Mvvm.v18.1.dll

Declaration

C#

public enum ServiceSearchMode

VB.NET

Public Enum ServiceSearchMode

Members

Name	Description
PreferLocal	A search for a service is carried out within both the current and parent service containers. A service found in the current container has a higher priority.
LocalOnly	A search for a service is carried out within the current service container.
PreferParents	A search for a service is carried out within both the current and parent service containers. A service found in parent containers has a higher priority.

Related API Members

The following properties accept/return ServiceSearchMode values:

• ServicePropertyAttribute.SearchMode

Remarks

See ViewModel relationships (ISupportParentViewModel) to learn more.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the ServiceSearchMode enum.

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#

how-to-pass-data-between-view-models-through-the-isupportparameter-interface-t144439/CS/ViewModel/ChildViewModelBase.cs#L5

public class ChildViewModelBase : ViewModelBase {
    IMessageBoxService MessageBoxService { get { return GetService<IMessageBoxService>(ServiceSearchMode.PreferParents); } }
    protected override void OnParameterChanged(object parameter) {

how-to-use-the-service-mechanism-in-a-custom-view-model-t144555/CS/ViewModel/ChildViewModel.cs#L17

IMessageBoxService MessageBoxService { get { return ServiceContainer.GetService<IMessageBoxService>(ServiceSearchMode.PreferParents); } }

how-to-use-messageboxservice-in-view-models-derived-from-the-viewmodelbase-class-t144403/CS/ViewModel/ChildViewModel.cs#L11

IMessageBoxService MessageBoxService { get { return GetService<IMessageBoxService>(ServiceSearchMode.PreferParents); } }
void ShowMessage() {

how-to-use-messageboxservice-in-poco-view-models-t144023/CS/ViewModel/ChildViewModel.cs#L6

public class ChildViewModel {
    [ServiceProperty(SearchMode=ServiceSearchMode.PreferParents)]
    protected virtual IMessageBoxService MessageBoxService { get { return null; } }

how-to-use-winuimessageboxservice-t145617/CS/ViewModel/ChildViewModel.cs#L6

public class ChildViewModel {
    [ServiceProperty(SearchMode=ServiceSearchMode.PreferParents)]
    protected virtual IMessageBoxService MessageBoxService { get { return null; } }

VB.NET

how-to-pass-data-between-view-models-through-the-isupportparameter-interface-t144439/VB/ViewModel/ChildPOCOViewModel.vb#L8

<ServiceProperty(SearchMode:=ServiceSearchMode.PreferParents)> _
Protected Overridable ReadOnly Property MessageBoxService() As IMessageBoxService

how-to-use-the-service-mechanism-in-a-custom-view-model-t144555/VB/ViewModel/ChildViewModel.vb#L27

Get
    Return ServiceContainer.GetService(Of IMessageBoxService)(ServiceSearchMode.PreferParents)
End Get

how-to-use-messageboxservice-in-view-models-derived-from-the-viewmodelbase-class-t144403/VB/ViewModel/ChildViewModel.vb#L23

Get
    Return GetService(Of IMessageBoxService)(ServiceSearchMode.PreferParents)
End Get

how-to-use-messageboxservice-in-poco-view-models-t144023/VB/ViewModel/ChildViewModel.vb#L6

Public Class ChildViewModel
    <ServiceProperty(SearchMode:=ServiceSearchMode.PreferParents)> _
    Protected Overridable ReadOnly Property MessageBoxService() As IMessageBoxService

how-to-use-winuimessageboxservice-t145617/VB/ViewModel/ChildViewModel.vb#L6

Public Class ChildViewModel
    <ServiceProperty(SearchMode:=ServiceSearchMode.PreferParents)> _
    Protected Overridable ReadOnly Property MessageBoxService() As IMessageBoxService