PagedAsyncSource.FetchPage Event

Allows you to fetch page rows.

Namespace: DevExpress.Xpf.Data

Assembly: DevExpress.Xpf.Core.v24.2.dll

NuGet Package: DevExpress.Wpf.Core

Declaration

C#

public event EventHandler<FetchPageAsyncEventArgs> FetchPage

VB.NET

Public Event FetchPage As EventHandler(Of FetchPageAsyncEventArgs)

Event Data

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

Property	Description
Filter	Gets the GridControl filtering. Inherited from FetchEventArgsBase.
Keys	Gets keys that you passed to the ReloadRows(Object[]) method.
Result	Gets or sets the result of the fetch page operation.
Skip	Gets the number of rows to skip in a returned result set. Inherited from FetchEventArgsBase.
SkipToken	Gets the skip token. Inherited from FetchEventArgsBase.
SortOrder	Gets the GridControl‘s sorting. Inherited from FetchEventArgsBase.
Take	Gets the number of rows to take in a returned result set. Inherited from FetchPageEventArgsBase.

Remarks

View Example: How to Bind to PagedAsyncSource

If you want to maintain a clean MVVM pattern and specify a fetch operation in a ViewModel, create a command and bind it to the PagedAsyncSource.FetchPageCommand property.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the FetchPage 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#

how-to-bind-wpf-grid-to-data/CS/CodeBehind/EFCore/PagedAsyncSource/MainWindow.xaml.cs#L21

};
source.FetchPage += OnFetchPage;
source.GetTotalSummaries += OnGetTotalSummaries;

wpf-data-grid-implement-crud-operations/CS/CodeBehind/EFCore/PagedAsyncSource/MainWindow.xaml.cs#L21

};
source.FetchPage += OnFetchPage;
source.GetTotalSummaries += OnGetTotalSummaries;

wpf-data-grid-bind-to-pagedasyncsource/CS/PagedAsyncSourceSample/MainWindow.xaml.cs#L22

source.FetchPage += (o, e) => {
    e.Result = FetchRowsAsync(e);

wpf-data-grid-use-skip-tokens-to-optimize-paging/CS/MainWindow.xaml.cs#L21

};
source.FetchPage += (o, e) => {
    e.Result = FetchRowsAsync(e);

VB.NET

how-to-bind-wpf-grid-to-data/VB/CodeBehind/EFCore/PagedAsyncSource/MainWindow.xaml.vb#L18

}
AddHandler source.FetchPage, AddressOf OnFetchPage
AddHandler source.GetTotalSummaries, AddressOf OnGetTotalSummaries

wpf-data-grid-bind-to-pagedasyncsource/VB/PagedAsyncSourceSample/MainWindow.xaml.vb#L18

AddHandler Unloaded, Sub(o, e) source.Dispose()
AddHandler source.FetchPage, Sub(o, e) e.Result = FetchRowsAsync(e)
AddHandler source.GetUniqueValues, Sub(o, e)

wpf-data-grid-use-skip-tokens-to-optimize-paging/VB/MainWindow.xaml.vb#L16

AddHandler Unloaded, Sub(o, e) source.Dispose()
AddHandler source.FetchPage, Sub(o, e) e.Result = FetchRowsAsync(e)
Me.grid.ItemsSource = source