---
title: "History Members"
canonical: https://www.graphicsmill.com/docs/gm5/AllMembers_T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History.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/)

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

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [History](https://www.graphicsmill.com/docs/gm5/C_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_ctor_1_bbf4dd67.htm.md) |  Creates and initializes an instance of the [History](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History.htm.md) class connected with the specified [Canvas](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_AjaxControls_VectorObjects_Canvas.htm.md). |
 
## Methods

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [AddLayerAdded](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_AddLayerAdded_2_a8c2dd5b.htm.md) |  Adds the layer added command to the history. |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [AddLayerRemoved](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_AddLayerRemoved_2_a8c2dd5b.htm.md) |  Adds the layer removed command to the history. |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [AddVObjectAdded](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_AddVObjectAdded_3_5d248e0e.htm.md) |  Adds the v-object added command to the history. |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [AddVObjectChanged](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_AddVObjectChanged_3_5d248e0e.htm.md) |  Adds the v-object changed command to the history. |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [AddVObjectRemoved](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_AddVObjectRemoved_3_5d248e0e.htm.md) |  Adds the v-object removed command to the history. |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Clear](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_Clear.htm.md) |  Discards both the undo and redo histories. |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [ClearRedo](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_ClearRedo.htm.md) |  Discards the redo history. |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [ClearUndo](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_ClearUndo.htm.md) |  Discards the undo history. |
 |  ![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) |  [Redo](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_Redo.htm.md) |  Redoes the last made change. |
 |  ![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).) |
 |  ![Public method](https://www.graphicsmill.com/docs/gm5/icons/pubmethod.gif) |  [Undo](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_Undo.htm.md) |  Undoes the last made change. |
 
## Properties

|   |  Name |  Description |
| --- | --- | --- |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [CanRedo](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_CanRedo.htm.md) |  Gets the value indicating if the last action can be redone. |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [CanUndo](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_CanUndo.htm.md) |  Gets the value indicating if the last action can be undone. |
 |  ![Public property](https://www.graphicsmill.com/docs/gm5/icons/pubproperty.gif) |  [Enable](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_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) |  [MaxUndoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_AjaxControls_VectorObjects_RedoUndo_History_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_History_TrackingEnabled.htm.md) |  Gets or sets the value indicating if the tracking commands functionality is enabled. |
   
## See Also

### Reference

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