Undo and Redo in Blazor Spreadsheet component

6 Aug 20251 minute to read

The Undo and Redo functionality in the Blazor Spreadsheet component allows users to easily reverse or reapply recent actions. It maintains a history of spreadsheet operations, encouraging experimentation with data and formatting while preserving the ability to restore previous states. All major operations are supported, including cell editing, formatting, structural changes, and data manipulation. The keyboard shortcuts - Ctrl + Z for Undo and Ctrl + Y for Redo - provide quick access without interacting with interface elements.

NOTE

The undo and redo history is limited to 25 operations to optimize memory usage; once this limit is reached, older actions are automatically discarded. Additionally, the history is cleared when worksheet protection is enabled.

Undo

The Undo operation reverses the most recent action performed within the Spreadsheet, restoring the previous state of the component and enabling safe modifications to content and formatting. End users can perform the undo operation through the user interface (UI) in the following ways:

  • Click the Undo button located in the Home tab of the Ribbon to reverse the latest operation.
  • Use the keyboard shortcut Ctrl + Z for a quick way to undo the last action.

UI showing undo option

NOTE

The Undo button is automatically disabled when there are no reversible operations available.

Redo

The Redo operation reapplies an action that was previously undone, allowing end users to move forward through the operation history and restore both data and interface states. Redo actions can be performed via the user interface in the following ways:

  • Click the Redo button located in the Home tab of the Ribbon to reapply the most recently undone operation.
  • Use the keyboard shortcut Ctrl + Y for quick access to redo the last undone action.

UI showing redo option

NOTE

The Redo button is automatically disabled when no actions are available to reapply or when a cell is in editing mode. Additionally, the redo history is cleared whenever a new action is performed following an undo.