InformationLayer.DataRequestCompleted Event

Occurs when a data request has been completed.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v24.1.dll

NuGet Package: DevExpress.Win.Map

Declaration

C#

public event EventHandler<RequestCompletedEventArgs> DataRequestCompleted

VB.NET

Public Event DataRequestCompleted As EventHandler(Of RequestCompletedEventArgs)

Event Data

The DataRequestCompleted event's data class is RequestCompletedEventArgs. The following properties provide information specific to this event:

Property	Description
Cancelled	Gets a value indicating whether an asynchronous operation has been canceled. Inherited from AsyncCompletedEventArgs.
Error	Gets a value indicating which error occurred during an asynchronous operation. Inherited from AsyncCompletedEventArgs.
Items	Returns all the items generated for the layer as the result of a web request.
UserState	Gets the unique identifier for the asynchronous task. Inherited from AsyncCompletedEventArgs.

The event data class exposes the following methods:

Method	Description
RaiseExceptionIfNecessary()	Raises a user-supplied exception if an asynchronous operation failed. Inherited from AsyncCompletedEventArgs.

Example

View Example

Form1.cs

void OnDataRequestCompleted(object sender, RequestCompletedEventArgs e) {
    mapControl.ZoomToFitLayerItems(0.4);
}

Form1.vb

Private Sub OnDataRequestCompleted(ByVal sender As Object, ByVal e As RequestCompletedEventArgs)
    mapControl.ZoomToFitLayerItems(0.4)
End Sub

Related GitHub Examples

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

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#

winforms-map-calculate-routes-from-major-roads/CS/CalculateRoutesFromMajorRoads/Form1.cs#L32

informationLayer.DataProvider = routeProvider;
informationLayer.DataRequestCompleted += OnDataRequestCompleted;

how-to-create-a-custom-search-panel-e5084/CS/MapControl_SearchPanel/Form1.cs#L12

InitializeComponent();
SearchLayer.DataRequestCompleted += SearchLayer_DataRequestCompleted;
//

VB.NET

winforms-map-calculate-routes-from-major-roads/VB/CalculateRoutesFromMajorRoads/Form1.vb#L39

informationLayer.DataProvider = routeProvider
AddHandler informationLayer.DataRequestCompleted, AddressOf OnDataRequestCompleted
teLatitude.Text = lat.ToString()

how-to-create-a-custom-search-panel-e5084/VB/MapControl_SearchPanel/Form1.vb#L24

InitializeComponent()
AddHandler SearchLayer.DataRequestCompleted, AddressOf SearchLayer_DataRequestCompleted
'