# ClearUndoBufferAsync Method

## Overloads

| [ClearUndoBufferAsync()](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.App.ClearUndoBufferAsync.htm#Qlik_Engine_App_ClearUndoBufferAsync) |  | Clears entirely the undo and redo buffer. |
| --- | --- | --- |
| [ClearUndoBufferAsync(AsyncHandle)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.App.ClearUndoBufferAsync.htm#Qlik_Engine_App_ClearUndoBufferAsync_Qlik_Engine_AsyncHandle_) |  | Clears entirely the undo and redo buffer. |

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.App.ClearUndoBufferAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.App.ClearUndoBufferAsync.htm)

## ClearUndoBufferAsync()

Clears entirely the undo and redo buffer.

### Declaration

```

          public Task ClearUndoBufferAsync()
    
  
```

### Returns

| Type | Description |
| --- | --- |
| System.Threading.Tasks.Task |  |

### Implements

[IApp.ClearUndoBufferAsync()](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IApp.ClearUndoBufferAsync.htm#Qlik_Engine_IApp_ClearUndoBufferAsync)

[](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.App.ClearUndoBufferAsync.htm) [](https://help.qlik.com/en-US/sense-developer/Subsystems/NetSDKAPIref/Content/Qlik.Engine.App.ClearUndoBufferAsync.htm)

## ClearUndoBufferAsync(AsyncHandle)

Clears entirely the undo and redo buffer.

### Declaration

```

          public Task ClearUndoBufferAsync(AsyncHandle asyncHandle)
    
  
```

### Parameters

| Type | Name | Description |
| --- | --- | --- |
| [AsyncHandle](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.AsyncHandle.htm) | asyncHandle | Handle to asynchronous method request |

### Returns

| Type | Description |
| --- | --- |
| System.Threading.Tasks.Task |  |

### Implements

[IApp.ClearUndoBufferAsync(AsyncHandle)](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.IApp.ClearUndoBufferAsync.htm#Qlik_Engine_IApp_ClearUndoBufferAsync_Qlik_Engine_AsyncHandle_)