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 # Class ObjectBaseAddon

 Last update: 16.07.2025 

Namespace: [VM.Managed.History](VM.Managed.History.md)  
Assembly: VMAppCore.dll

```csharp
public abstract class ObjectBaseAddon : HistoryManagerAddon

```

#### Inheritance

[object](https://learn.microsoft.com/dotnet/api/system.object) ← HistoryManagerAddon ← [ObjectBaseAddon](VM.Managed.History.ObjectBaseAddon.md)

#### Derived

[AddToSubEntityAddon](VM.Managed.History.AddToSubEntityAddon.md), [HiddenDocumentAddon](VM.Managed.History.HiddenDocumentAddon.md), [NavigatorAddon](VM.Managed.History.NavigatorAddon.md), [RefreshSubEntityAddon](VM.Managed.History.RefreshSubEntityAddon.md), [UpdateSimulationConfigurationAddon](VM.Managed.History.UpdateSimulationConfigurationAddon.md)

#### Inherited Members

HistoryManagerAddon.BeforeUndo(object, HistoryEventArgs), HistoryManagerAddon.AfterUndo(object, HistoryEventArgs), HistoryManagerAddon.BeforeRedo(object, HistoryEventArgs), HistoryManagerAddon.AfterRedo(object, HistoryEventArgs), HistoryManagerAddon.BeforeRollback(object, HistoryEventArgs), HistoryManagerAddon.AfterRollback(object, HistoryEventArgs), HistoryManagerAddon.BeforeRecord(object, HistoryEventArgs), HistoryManagerAddon.AfterRecord(object, HistoryEventArgs), HistoryManagerAddon.Register(HistoryManager), HistoryManagerAddon.ClearMarkCollection(ICollection<HistoryMark>), HistoryManagerAddon.ClearMark(HistoryMark), HistoryManagerAddon.Parent, HistoryManagerAddon.DoneList, HistoryManagerAddon.UndoneList

#### Extension Methods

[LinkPropertyItemCache.GetLinkProperties(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkProperties_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkPropertiesAndValues(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkPropertiesAndValues_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkedObjects<T>(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkedObjects__1_System_Object_VM_Models_Pre_LinkPropertyType_)

## Constructors

### ObjectBaseAddon()

```csharp
public ObjectBaseAddon()

```

## Properties

### List

```csharp
protected IEnumerable<UIntPtr> List { get; }

```

#### Property Value

[IEnumerable](https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1)&lt;[UIntPtr](https://learn.microsoft.com/dotnet/api/system.uintptr)&gt;

## Methods

### AddEntity(UIntPtr)

```csharp
public void AddEntity(UIntPtr key)

```

#### Parameters

`key` [UIntPtr](https://learn.microsoft.com/dotnet/api/system.uintptr)

### AfterRedo(object, HistoryEventArgs)

```csharp
protected override sealed void AfterRedo(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### AfterRollback(object, HistoryEventArgs)

```csharp
protected override sealed void AfterRollback(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### AfterUndo(object, HistoryEventArgs)

```csharp
protected override sealed void AfterUndo(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### BeforeRedo(object, HistoryEventArgs)

```csharp
protected override sealed void BeforeRedo(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### BeforeRollback(object, HistoryEventArgs)

```csharp
protected override sealed void BeforeRollback(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### BeforeUndo(object, HistoryEventArgs)

```csharp
protected override sealed void BeforeUndo(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### Init(object, HistoryEventArgs)

```csharp
protected virtual void Init(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### Process(object, HistoryEventArgs)

```csharp
protected virtual void Process(object o, HistoryEventArgs args)

```

#### Parameters

`o` [object](https://learn.microsoft.com/dotnet/api/system.object)

`args` HistoryEventArgs

### RemoveEntity(UIntPtr)

```csharp
public void RemoveEntity(UIntPtr key)

```

#### Parameters

`key` [UIntPtr](https://learn.microsoft.com/dotnet/api/system.uintptr)