History

The RadSpreadSheet control uses the SpreadProcessing library as its document model. This library provides a history functionality that you can access via the Workbook.History property of RadSpreadsheet.

More information about the history functionality can be found in this article.

The following example showcases how to implement custom undo/redo buttons:

Adding buttons in the UI for the Undo and Redo methods

• XAML

<Grid> 
    <Grid.RowDefinitions> 
        <RowDefinition Height="Auto"/> 
        <RowDefinition Height="*"/> 
    </Grid.RowDefinitions> 
    <StackPanel HorizontalAlignment="Left" Orientation="Horizontal"> 
        <telerik:RadButton Content="Undo last action"  
                           Click="OnUndoButtonClicked"> 
            <telerik:RadButton.ContentTemplate> 
                <DataTemplate> 
                    <StackPanel Orientation="Horizontal"> 
                        <telerik:RadGlyph Glyph="{StaticResource GlyphUndo}"/> 
                        <TextBlock Text="{Binding}" Margin="3 0 0 0"/> 
                    </StackPanel> 
                </DataTemplate> 
            </telerik:RadButton.ContentTemplate> 
        </telerik:RadButton> 
        <telerik:RadButton Content="Redo last action" 
                           Click="OnRedoButtonClicked"> 
            <telerik:RadButton.ContentTemplate> 
                <DataTemplate> 
                    <StackPanel Orientation="Horizontal"> 
                        <telerik:RadGlyph Glyph="{StaticResource GlyphRedo}"/> 
                        <TextBlock Text="{Binding}" Margin="3 0 0 0"/> 
                    </StackPanel> 
                </DataTemplate> 
            </telerik:RadButton.ContentTemplate> 
        </telerik:RadButton> 
    </StackPanel> 
    <telerik:RadSpreadsheet x:Name="radSpreadsheet" Grid.Row="1"> 
        <telerik:RadSpreadsheet.FormatProviders> 
            <Txt:TxtFormatProvider/> 
            <Csv:CsvFormatProvider/> 
        </telerik:RadSpreadsheet.FormatProviders> 
    </telerik:RadSpreadsheet> 
</Grid> 

Adding the logic for the buttons to execute the Undo and Redo methods

• C#

private void OnUndoButtonClicked(object sender, RoutedEventArgs e) 
{ 
    this.radSpreadsheet.Workbook.History.Undo(); 
} 
 
private void OnRedoButtonClicked(object sender, RoutedEventArgs e) 
{ 
    this.radSpreadsheet.Workbook.History.Redo(); 
} 

RadSpreadsheet with custom redo/undo buttons

RadSpreadsheetRibbon

The history functionality is also present in the RadSpreadsheetRibbon element, which is a UI component that you can use together with RadSpreadsheet. Via the undo and redo buttons in the top-left corner, you can execute this logic through the UI.