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 # Class Function

 Last update: 09.03.2026 

<a id="VM_Managed_DAFUL_Function"></a>

Namespace: [VM.Managed.DAFUL](VM.Managed.DAFUL.md)  
Assembly: VMDSB.dll

This class is to represent the function.

```csharp
public class Function : SubEntity, IObservableObject, IDisposableObject, ILinkable, ILinkContainerEvent, IVerifiable, IHistoryObjectSerializable, IAttributeContainer, ISubEntity, IEntityBase, IObjectBase, IObject, ILinkContainer, IOwned, IHasID, IEventProvider, IHasKeyObject, IHasName, IEnabled, IHasComment, INamed, INavigatorItem, IInterface, ITemplateObject, IArgument, IReportable, IDuplicate, IPostDeserialized

```

#### Inheritance

object ← ObservableObject ← [LinkableBase](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/LinkableBase.cs) ← ObjectBase ← Object&lt;ObjectEventCore&gt; ← [SubEntity](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs) ← [Function](VM.Managed.DAFUL.Function.md)

#### Implements

IObservableObject, IDisposableObject, ILinkable, ILinkContainerEvent, IVerifiable, [IHistoryObjectSerializable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMHist/Interfaces.cs), IAttributeContainer, ISubEntity, IEntityBase, IObjectBase, IObject, ILinkContainer, IOwned, IHasID, IEventProvider, IHasKeyObject, IHasName, IEnabled, IHasComment, INamed, INavigatorItem, IInterface, ITemplateObject, IArgument, IReportable, IDuplicate, IPostDeserialized

#### Inherited Members

[SubEntity.Initialize(Unit.ConvertFactor)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.GetModelNavigatorInformationImpl(XmlDocument, XmlElement, bool)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.FixUp(ObjectBase)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.WriteTemplateImpl(XmlWriter)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.ReadTemplateImpl(XmlReader)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.Name](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.FullName](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.NonSymmetricName](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.DisplayName](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.IsEnabled](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), [SubEntity.Comment](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMObjBase/SubEntity.cs), Object&lt;ObjectEventCore&gt;.GetKey(), Object&lt;ObjectEventCore&gt;.Initialize(Unit.ConvertFactor), Object&lt;ObjectEventCore&gt;.SetIconColor(Canvas), Object&lt;ObjectEventCore&gt;.OnDeserialization(object), Object&lt;ObjectEventCore&gt;.CustomGetObjectData(SerializationInfo, StreamingContext), Object&lt;ObjectEventCore&gt;.RollbackEvent(), Object&lt;ObjectEventCore&gt;.OnDeserializedCore(object), Object&lt;ObjectEventCore&gt;.Key, Object&lt;ObjectEventCore&gt;.UntypedEventCore, Object&lt;ObjectEventCore&gt;.EventCore, Object&lt;ObjectEventCore&gt;.Attributes, ObjectBase.ReplaceEventCore(ObjectEventCore), ObjectBase.SetModifiedCore(ModifiedResult.ModifiedType), ObjectBase.AddPostDeserialize(StreamingContext), ObjectBase.LinkAddedToDocumentCore(IOwned, bool), ObjectBase.SetModified(ModifiedResult.ModifiedType), ObjectBase.SetModified(), ObjectBase.SetModified(ModifiedResult.ModifiedType, IDocument), ObjectBase.DestroyObject(object, LinkEventArgs), ObjectBase.DestroyObject(DestroyEventArgs), ObjectBase.DestroyObject(), ObjectBase.Initialize(Unit.ConvertFactor), ObjectBase.FixUp(ObjectBase), ObjectBase.DoWorkAfterUpdateContents(), ObjectBase.SetOldNameWithNewEntity(ObjectBase, ObjectBase), ObjectBase.SetIconColor(Canvas), ObjectBase.RemoveFromCreatedList(), ObjectBase.PostAddToDocument(), ObjectBase.PostRemoveFromDocument(Document), ObjectBase.GetArgumentList(LinkedList&lt;ObjectBase&gt;), ObjectBase.ResetInvalidEntity(), ObjectBase.OnDeserialization(object), ObjectBase.IsSerializableEvent(Delegate), ObjectBase.CustomGetObjectData(SerializationInfo, StreamingContext), ObjectBase.CheckAndUpdateLink(HashSet&lt;ObjectBase&gt;), ObjectBase.Verify(VerifiedResult), ObjectBase.ConnectProxy(), ObjectBase.RollbackEvent(), ObjectBase.LinkRequestUpdating(object, LinkEventArgs), ObjectBase.LinkRequestUpdate(object, LinkEventArgs), ObjectBase.LinkRequestDestroying(object, LinkEventArgs), ObjectBase.LinkRequestDestroy(object, LinkEventArgs), ObjectBase.LinkAddedToDocument(object, AddToDocEventArgs), ObjectBase.LinkRemovedFromDocument(object, RemoveFromDocEventArgs), ObjectBase.DisposeManagedResources(), ObjectBase.GetDestroyEventExtraData(), ObjectBase.OnLinkReserved(ILink, object, EventArgs), ObjectBase.CreateEntityWhenUpdateContents(Action), ObjectBase.GetObjectByKey(UIntPtr), ObjectBase.FindObjectOnXmlDeserialize(string), ObjectBase.UpdateContents(XmlReader, ObjectBase, string), ObjectBase.UpdateContents(XmlReader, ObjectBase), ObjectBase.UpdateContents(string, string), ObjectBase.UpdateContents(string), ObjectBase.SetFlagWhenXMLFile(string, bool), ObjectBase.IsEqualArray&lt;T&gt;(T\[\], T\[\]), ObjectBase.IsEqualList(List&lt;double&gt;, List&lt;double&gt;), ObjectBase.SetContainer(IOwned, bool), ObjectBase.GetTargetListForUpdate(), ObjectBase.SkipUpdateObjectImpl(), ObjectBase.raise\_OnUpdating(object, LinkEventArgs), ObjectBase.raise\_OnUpdate(object, LinkEventArgs), ObjectBase.raise\_OnDestroying(object, LinkEventArgs), ObjectBase.raise\_OnDestroy(object, LinkEventArgs), ObjectBase.raise\_Destroying(object, Identifier), ObjectBase.raise\_OnAdded(object, AddToDocEventArgs), ObjectBase.raise\_OnRemoved(object, RemoveFromDocEventArgs), ObjectBase.raise\_OnContentsUpdated(object, EventArgs), ObjectBase.Dispose(bool), ObjectBase.SkipModified, ObjectBase.ClearChildInfoBeforeDeserialize, ObjectBase.KeyImpl, ObjectBase.ID, ObjectBase.TopologyEntityTypeName, ObjectBase.ObjectStateForCircularError, ObjectBase.ObjectState, ObjectBase.IsChildExternable, ObjectBase.IsExternable, ObjectBase.Container, ObjectBase.Owner, ObjectBase.Document, ObjectBase.UntypedEventCore, ObjectBase.KernelKey, ObjectBase.Key, ObjectBase.OnContentsUpdated, ObjectBase.OnRemoved, ObjectBase.OnAdded, ObjectBase.Destroying, ObjectBase.OnDestroy, ObjectBase.OnDestroying, ObjectBase.OnUpdate, ObjectBase.OnUpdating, [LinkableBase.OnDeserialization(object)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/LinkableBase.cs), ObservableObject.Dispose(), ObservableObject.RaisePropertyChanged(string), ObservableObject.RaisePropertyChanged(string, object, object), ObservableObject.Dispose(bool), ObservableObject.DisposeManagedResources(), ObservableObject.DisposeUnmanagedResources(), ObservableObject.IsDisposed, ObservableObject.TryDisposing, ObservableObject.Disposed, ObservableObject.Disposing, ObservableObject.PropertyChanged

#### 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&lt;T&gt;(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkedObjects__1_System_Object_VM_Models_Pre_LinkPropertyType_)

## Constructors

### <a id="VM_Managed_DAFUL_Function__ctor"></a> Function()

Initializes a new instance of the  class.

```csharp
[Obsolete]
public Function()

```

### <a id="VM_Managed_DAFUL_Function__ctor_VM_ExpressionTypes_"></a> Function(ExpressionTypes)

Initializes a new instance of the  class.

```csharp
public Function(ExpressionTypes expressionTypes)

```

#### Parameters

`expressionTypes` ExpressionTypes

The function expression type.

### <a id="VM_Managed_DAFUL_Function__ctor_System_String_"></a> Function(string)

Initializes a new instance of the  class.

```csharp
[Obsolete]
public Function(string strName)

```

#### Parameters

`strName` string

Name of the function.

### <a id="VM_Managed_DAFUL_Function__ctor_System_String_VM_ExpressionTypes_"></a> Function(string, ExpressionTypes)

Initializes a new instance of the  class.

```csharp
public Function(string strName, ExpressionTypes expressionTypes)

```

#### Parameters

`strName` string

Name of the function.

`expressionTypes` ExpressionTypes

The function expression type.

## Properties

### <a id="VM_Managed_DAFUL_Function_ArgumentList"></a> ArgumentList

Gets or sets the argument list.

```csharp
public ArgumentListGeneral ArgumentList { get; set; }

```

#### Property Value

[ArgumentListGeneral](VM.Managed.DAFUL.ArgumentListGeneral.md)

### <a id="VM_Managed_DAFUL_Function_ArgumentType"></a> ArgumentType

Gets the type of the argument

```csharp
public ArgumentTypes ArgumentType { get; }

```

#### Property Value

ArgumentTypes

### <a id="VM_Managed_DAFUL_Function_Expression"></a> Expression

Gets or sets the expression.

```csharp
public string Expression { get; set; }

```

#### Property Value

string

### <a id="VM_Managed_DAFUL_Function_FunctionExpressionType"></a> FunctionExpressionType

```csharp
public ExpressionTypes FunctionExpressionType { get; set; }

```

#### Property Value

ExpressionTypes

### <a id="VM_Managed_DAFUL_Function_IsInterface"></a> IsInterface

Gets or sets a value indicating whether this instance is interface.

```csharp
public bool IsInterface { get; set; }

```

#### Property Value

bool

### <a id="VM_Managed_DAFUL_Function_IsPerformanceIndex"></a> IsPerformanceIndex

Gets or sets a value indicating whether this instance is the peformance index.

```csharp
public bool IsPerformanceIndex { get; set; }

```

#### Property Value

bool

### <a id="VM_Managed_DAFUL_Function_PredefinedKeywords"></a> PredefinedKeywords

```csharp
public static IEnumerable<string> PredefinedKeywords { get; }

```

#### Property Value

IEnumerable&lt;string&gt;

### <a id="VM_Managed_DAFUL_Function_PythonInterpreterPath"></a> PythonInterpreterPath

The path to the python interpreter(python.exe)

```csharp
public static string PythonInterpreterPath { get; set; }

```

#### Property Value

string

### <a id="VM_Managed_DAFUL_Function_ReferenceType"></a> ReferenceType

Gets the type of the array for argument.

```csharp
public string ReferenceType { get; }

```

#### Property Value

string

### <a id="VM_Managed_DAFUL_Function_SolverModulePath"></a> SolverModulePath

The path to the console solver directory

```csharp
public static string SolverModulePath { get; set; }

```

#### Property Value

string

## Methods

### <a id="VM_Managed_DAFUL_Function_ContainsReservedArgument"></a> ContainsReservedArgument()

Determines whether \[contains\] \[the reserved arg\].

```csharp
public bool ContainsReservedArgument()

```

#### Returns

bool

`true` if \[contains\] \[the reserved arg\]; otherwise, `false`.

### <a id="VM_Managed_DAFUL_Function_CreateSimplePythonFunction_System_String_"></a> CreateSimplePythonFunction(string)

```csharp
public static Function CreateSimplePythonFunction(string strName)

```

#### Parameters

`strName` string

#### Returns

[Function](VM.Managed.DAFUL.Function.md)

### <a id="VM_Managed_DAFUL_Function_Initialize_VM_Unit_ConvertFactor_"></a> Initialize(ConvertFactor)

Initializes member through unit convert factor.

```csharp
public override void Initialize(Unit.ConvertFactor factor)

```

#### Parameters

`factor` Unit.ConvertFactor

The unit convert factor.

### <a id="VM_Managed_DAFUL_Function_LinkAddedToDocumentCore_VM_Models_Pre_IOwned_System_Boolean_"></a> LinkAddedToDocumentCore(IOwned, bool)

```csharp
protected override void LinkAddedToDocumentCore(IOwned owner, bool bBackup)

```

#### Parameters

`owner` IOwned

`bBackup` bool

### <a id="VM_Managed_DAFUL_Function_LinkRequestUpdate_System_Object_VM_Managed_LinkEventArgs_"></a> LinkRequestUpdate(object, LinkEventArgs)

Request for update the linked object.

```csharp
protected override void LinkRequestUpdate(object objNotifier, LinkEventArgs arg)

```

#### Parameters

`objNotifier` object

The linked object.

`arg` LinkEventArgs

The  instance containing the event data.

### <a id="VM_Managed_DAFUL_Function_ReadTemplateImpl_System_Xml_XmlReader_"></a> ReadTemplateImpl(XmlReader)

Reads the template document \[implementation\].

```csharp
protected override void ReadTemplateImpl(XmlReader reader)

```

#### Parameters

`reader` XmlReader

The reader.

### <a id="VM_Managed_DAFUL_Function_RefineExpression_VM_ExpressionParser_"></a> RefineExpression(ExpressionParser)

```csharp
public void RefineExpression(ExpressionParser parser = null)

```

#### Parameters

`parser` ExpressionParser

### <a id="VM_Managed_DAFUL_Function_VerifyExpression_System_String_System_String_"></a> VerifyExpression(string, string)

```csharp
public bool VerifyExpression(string strPathPythonExe = null, string strPathSolverDir = null)

```

#### Parameters

`strPathPythonExe` string

`strPathSolverDir` string

#### Returns

bool

### <a id="VM_Managed_DAFUL_Function_WriteTemplateImpl_System_Xml_XmlWriter_"></a> WriteTemplateImpl(XmlWriter)

Writes the template document \[implementation\].

```csharp
protected override void WriteTemplateImpl(XmlWriter writer)

```

#### Parameters

`writer` XmlWriter

The writer.