ProcessEditorActivationActionEventArgs.RaiseEventAgain Property

Gets or sets whether the event is raised again to make the focused editor process an activation action.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v20.2.Core.dll

NuGet Packages: DevExpress.WindowsDesktop.Wpf.Grid.Core, DevExpress.Wpf.Grid.Core

Declaration

C#

public bool RaiseEventAgain { get; set; }

VB.NET

Public Property RaiseEventAgain As Boolean

Property Value

Type	Description
Boolean	true, to raise the event again; otherwise, false.

Remarks

An end user can activate the focused cell’s in-place editor in the following ways:

• Click the required cell
• Press Enter
• Press F2
• Start typing.

To Make the Focused Editor Process an Activation Action

1. Handle the DataViewBase.ProcessEditorActivationAction event.
2. Use the ActivationActionEventArgsBase.ActivationAction and ActivationActionEventArgsBase.MouseLeftButtonEventArgs / ActivationActionEventArgsBase.KeyDownEventArgs / ActivationActionEventArgsBase.TextInputEventArgs properties to get the action’s information.
3. Set the RaiseEventAgain property to true to make the focused editor process the activation action.

Example 1

When an end user clicks a cell, the default behavior only activates the cell editor. The GridControl grabs the click event and the editor does not receive it, so the click does not select an item inside the editor. However, you can handle the DataViewBase.ProcessEditorActivationAction event to make the GridControl raise the click event again after handling it:

View Example

Xaml

<dxg:GridControl Name="grid" ItemsSource="{Binding Items}">
    <dxg:GridColumn FieldName="Country"/>
    <dxg:GridColumn FieldName="City">
        <dxg:GridColumn.CellTemplate>
            <DataTemplate>
                <dxe:ListBoxEdit x:Name="PART_Editor" ItemsSource="{Binding RowData.Row.Cities}"/>
            </DataTemplate>
        </dxg:GridColumn.CellTemplate>
    </dxg:GridColumn>
    <dxg:GridControl.View>
        <dxg:TableView ProcessEditorActivationAction="TableView_ProcessEditorActivationAction" />
    </dxg:GridControl.View>
</dxg:GridControl>

C#

void TableView_ProcessEditorActivationAction(object sender, DevExpress.Xpf.Grid.ProcessEditorActivationActionEventArgs e) {
    if (e.Column.FieldName == "City" 
     && (e.ActivationAction == ActivationAction.MouseLeftButtonDown 
      && e.MouseLeftButtonEventArgs.LeftButton == System.Windows.Input.MouseButtonState.Pressed))
        e.RaiseEventAgain = true;
}

VB.NET

Private Sub TableView_ProcessEditorActivationAction(ByVal sender As Object, ByVal e As DevExpress.Xpf.Grid.ProcessEditorActivationActionEventArgs)
    If e.Column.FieldName = "City" 
     AndAlso (e.ActivationAction = ActivationAction.MouseLeftButtonDown 
      AndAlso e.MouseLeftButtonEventArgs.LeftButton = System.Windows.Input.MouseButtonState.Pressed) 
    Then e.RaiseEventAgain = True
End Sub

Example 2

The following code sample shows how to make the Slider (which is specified as a custom editor) process the + and - keys after activating an editor:

C#

void TableView_ProcessEditorActivationAction(object sender, ProcessEditorActivationActionEventArgs e) {
    if(e.Column.FieldName == "HoursActive" && e.ActivationAction == ActivationAction.KeyDown) {
        e.RaiseEventAgain = IsSliderCommand(e.KeyDownEventArgs.Key);
    }
    if(e.Column.FieldName == "HoursActive" && e.ActivationAction == ActivationAction.MouseLeftButtonDown) {
        e.RaiseEventAgain = true;
    }
}

bool IsSliderCommand(Key key) {
    switch(key) {
        case Key.Add:
        case Key.Subtract:
        case Key.OemPlus:
        case Key.OemMinus:
            return true;
        default:
            return false;
    }
}

VB.NET

Private Sub TableView_ProcessEditorActivationAction(ByVal sender As Object, ByVal e As ProcessEditorActivationActionEventArgs)
    If e.Column.FieldName = "HoursActive" AndAlso e.ActivationAction = ActivationAction.KeyDown Then
        e.RaiseEventAgain = IsSliderCommand(e.KeyDownEventArgs.Key)
    End If
    If e.Column.FieldName = "HoursActive" AndAlso e.ActivationAction = ActivationAction.MouseLeftButtonDown Then
        e.RaiseEventAgain = True
    End If
End Sub

Private Function IsSliderCommand(ByVal key As Key) As Boolean
    Select Case key
        Case System.Windows.Input.Key.Add, System.Windows.Input.Key.Subtract, System.Windows.Input.Key.OemPlus, System.Windows.Input.Key.OemMinus
            Return True
        Case Else
            Return False
    End Select
End Function

Run Demo: Cell Editors

Related GitHub Examples

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

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#

wpf-data-grid-embed-a-richtextbox-into-grid-cells/CS/Window1.xaml.cs#L26

    if(e.ActivationAction == ActivationAction.MouseLeftButtonDown)
        e.RaiseEventAgain = true;
}

how-to-specify-navigation-in-custom-cell-editors/CS/MainWindow.xaml.cs#L86

    if (e.Column.FieldName == "City" && (e.ActivationAction == ActivationAction.MouseLeftButtonDown && e.MouseLeftButtonEventArgs.LeftButton == System.Windows.Input.MouseButtonState.Pressed))
        e.RaiseEventAgain = true;
}

VB.NET

how-to-specify-navigation-in-custom-cell-editors/VB/MainWindow.xaml.vb#L102

If e.Column.FieldName = "City" AndAlso (e.ActivationAction = ActivationAction.MouseLeftButtonDown AndAlso e.MouseLeftButtonEventArgs.LeftButton = System.Windows.Input.MouseButtonState.Pressed) Then
    e.RaiseEventAgain = True
End If