## On this page
# Class LeafBeamGroupBuilder
Last update: 09.03.2026
Namespace: [VM.Builders.Pre.Force](VM.Builders.Pre.Force.md)
Assembly: VM.Operations.Pre.Force.dll
```csharp
public class LeafBeamGroupBuilder : BuilderBeamGroupMultiplePoints, IBuilder
```
#### Inheritance
object ← [BuilderBase<BeamGroup>](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs) ← [BuilderSymmetric<BeamGroup>](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs) ← [BuilderNamed<BeamGroup>](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderNamed.cs) ← [BuilderBeamGroupMultiplePointsBase<BeamGroup>](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs) ← [BuilderBeamGroupMultiplePoints](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs) ← [LeafBeamGroupBuilder](VM.Builders.Pre.Force.LeafBeamGroupBuilder.md)
#### Implements
IBuilder
#### Inherited Members
[BuilderBeamGroupMultiplePointsBase<BeamGroup>.Validate(IList<string>)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.OnPostBuild(ObjectBase, Document)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.GetBeamGroupBodyName(Document, string, int)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.SetInputResultData()](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.BeamGroupInfo](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.BeamCrossSection](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.NoOfElements](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.MaterialProperty](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.Color](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.AddToDoc](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.m\_bldrBeamInfoAry](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.UseCustomize](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.ResultBeamGroup](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderBeamGroupMultiplePointsBase<BeamGroup>.ResultSolidBodies](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBldBeamGroup/BuilderBeamGroupMultiplePoints.cs), [BuilderNamed<BeamGroup>.OnPostBuild(ObjectBase, Document)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderNamed.cs), [BuilderNamed<BeamGroup>.CheckUnit(Document3D, Document3D, string)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderNamed.cs), [BuilderNamed<BeamGroup>.Name](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderNamed.cs), [BuilderSymmetric<BeamGroup>.Build(Document)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderSymmetric<BeamGroup>.Symmetric](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderSymmetric<BeamGroup>.CurrentSymmetric](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.m\_bSuccess](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.Build(Document)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.Build(Document, List<string>)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.Validate(IList<string>)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.Success()](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.OnPostBuild(ObjectBase, Document)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.OnFinalBuild(string, Document)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.OnObjectChangeBuild(string, Document)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.OnPostAddDoc(ObjectBase)](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.Parameters](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.AddToDoc](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.UseChangedObject](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.SetPointKey](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.BuildObject](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.BuildDocument](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.UseInterface](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs), [BuilderBase<BeamGroup>.ErrorMessage](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Builders/VMBld/BuilderBase.cs)
#### 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
### LeafBeamGroupBuilder(Leaf, LeafInfo, Vector\[\], TMatrix, bool)
```csharp
public LeafBeamGroupBuilder(Leaf leaf, LeafInfo leafInfo, Vector[] positions = null, TMatrix repositionMatrix = default, bool useCustomize = false)
```
#### Parameters
`leaf` [Leaf](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre.Force/Models/LeafSpring/Leaf.Linker.cs)
`leafInfo` LeafInfo
`positions` Vector\[\]
`repositionMatrix` TMatrix
`useCustomize` bool
## Properties
### Leaf
```csharp
public Leaf Leaf { get; }
```
#### Property Value
[Leaf](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre.Force/Models/LeafSpring/Leaf.Linker.cs)
### LeafInfo
```csharp
public LeafInfo LeafInfo { get; }
```
#### Property Value
LeafInfo
### Positions
```csharp
public Vector[] Positions { get; }
```
#### Property Value
Vector\[\]
### RepositionMatrix
```csharp
public TMatrix RepositionMatrix { get; }
```
#### Property Value
TMatrix
## Methods
### GetBeamGroupBodyName(Document, string, int)
```csharp
protected override string GetBeamGroupBodyName(Document document, string beamGroupName, int index)
```
#### Parameters
`document` Document
`beamGroupName` string
`index` int
#### Returns
string
### SetInputResultData()
```csharp
protected override bool SetInputResultData()
```
#### Returns
bool