---
title: "HistoryData Members"
canonical: https://www.graphicsmill.com/docs/gm5/AllMembers_T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# HistoryData Members
 
The [HistoryData](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData.htm.md) type exposes the following members.
 
## Constructors

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [HistoryData](https://www.graphicsmill.com/docs/gm5/O_T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_ctor.htm.md) |  Overloaded. <br>Creates and initializes an instance of the [HistoryData](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData.htm.md) class. |
 
## Methods

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [ApplyState](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_ApplyState_1_1ff2150d.htm.md) |  Applies the stored state to the specified [History](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History.htm.md). |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Equals](http://msdn2.microsoft.com/en-us/bsc2ak47) |  (Inherited from [Object](http://msdn2.microsoft.com/en-us/e5kfa45b).) |
 |  ![Protected method](https://www.graphicsmill.com/docs/gm5/icons/protmethod.gif) |  [Finalize](http://msdn2.microsoft.com/en-us/4k87zsw7) |  (Inherited from [Object](http://msdn2.microsoft.com/en-us/e5kfa45b).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [GetHashCode](http://msdn2.microsoft.com/en-us/zdee4b3y) |  (Inherited from [Object](http://msdn2.microsoft.com/en-us/e5kfa45b).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [GetType](http://msdn2.microsoft.com/en-us/dfwy45w9) |  (Inherited from [Object](http://msdn2.microsoft.com/en-us/e5kfa45b).) |
 |  ![Protected method](https://www.graphicsmill.com/docs/gm5/icons/protmethod.gif) |  [MemberwiseClone](http://msdn2.microsoft.com/en-us/57ctke0a) |  (Inherited from [Object](http://msdn2.microsoft.com/en-us/e5kfa45b).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [ToString](http://msdn2.microsoft.com/en-us/7bxwbwt2) |  (Inherited from [Object](http://msdn2.microsoft.com/en-us/e5kfa45b).) |
 
## Properties

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [Commands](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_Commands.htm.md) |  Gets or sets a list of the commands. |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [Current](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_Current.htm.md) |  Gets or sets an index of the current action. |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [Enable](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_Enable.htm.md) |  Gets or sets the value indicating if the undo/redo functionality is enabled. |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [Locked](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_Locked.htm.md) |  Gets or sets the value indicating if some command is executing. |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [MaxUndoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_MaxUndoStepCount.htm.md) |  Gets or sets a maximum number of available undo steps. |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [TrackingEnabled](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData_TrackingEnabled.htm.md) |  Gets or sets the value indicating if the tracking commands functionality is enabled. |
   
## See Also

### Reference

- [HistoryData Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_HistoryData.htm.md)
- [Aurigma.GraphicsMill.AjaxControls.VectorObjects.RedoUndo Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo.htm.md)