GridViewBase.AddingNewRow Event

Occurs when a new row is added to the GridControl and allows you to initialize the new record.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v23.2.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

C#

public event AddingNewEventHandler AddingNewRow

VB.NET

Public Event AddingNewRow As AddingNewEventHandler

Event Data

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

Property	Description
NewObject	Gets or sets the object to be added to the binding list.

Remarks

The AddingNewRow event occurs before the GridControl adds a new record to your data source. In this event handler, you can specify a data object and initialize its values.

View Example: How to Initialize the New Item Row with Default Values

XAML

<dxg:GridControl>
    <dxg:GridControl.View>
        <dxg:TableView NewItemRowPosition="Top" 
                       AddingNewRow="view_AddingNewRow" />
    </dxg:GridControl.View>
</dxg:GridControl>

C#

void view_AddingNewRow(object sender, System.ComponentModel.AddingNewEventArgs e) {
    e.NewObject = new Product(selectedCompany) {
        ProductName = "", 
        CompanyName = "New Company", 
        UnitPrice = 10, 
        Discontinued = false 
    };
}

VB.NET

Private Sub view_AddingNewRow(ByVal sender As Object, ByVal e As System.ComponentModel.AddingNewEventArgs)
    e.NewObject = New Product(selectedCompany) With {
        .ProductName = "",
        .CompanyName = "New Company",
        .UnitPrice = 10,
        .Discontinued = False
    }
End Sub

Note

The AddingNewRow event does not fire when you add a new row directly to a bound data source.

Refer to the following topic for information on how to add a new row to the GridControl: New Item Row.

If you want to maintain a clean MVVM pattern and specify a new data record in a View Model, create a command and bind it to the AddingNewRowCommand property.

Related GitHub Examples

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

XAML

wpf-data-grid-initialize-new-item-row-with-default-values/CS/NewItemRow_CodeBehind/MainWindow.xaml#L14

NewItemRowPosition="Top"
AddingNewRow="OnAddingNewRow"
ValidateRow="OnValidateRow"

C#

wpf-data-grid-add-and-remove-rows-in-code/CS/AddRemoveRows/AddRemoveRowBehavior.cs#L37

    base.OnAttached();
    AssociatedObject.AddingNewRow += OnAddingNewRow;
}

how-to-initialize-a-new-row-when-only-the-editor-is-shown-e1817/CS/InitNewRow_Editing/InitNewRowOnEditingBehavior.cs#L10

    AssociatedObject.FocusedRowHandleChanged += OnFocusedRowHandleChanged;
    AssociatedObject.AddingNewRow += OnAddingNewRow;
}

VB.NET

wpf-data-grid-add-and-remove-rows-in-code/VB/AddRemoveRows/AddRemoveRowBehavior.vb#L55

    MyBase.OnAttached()
    AddHandler AssociatedObject.AddingNewRow, AddressOf OnAddingNewRow
End Sub

how-to-initialize-a-new-row-when-only-the-editor-is-shown-e1817/VB/InitNewRow_Editing/InitNewRowOnEditingBehavior.vb#L13

    AddHandler AssociatedObject.FocusedRowHandleChanged, AddressOf OnFocusedRowHandleChanged
    AddHandler AssociatedObject.AddingNewRow, AddressOf OnAddingNewRow
End Sub