# GH_Component.GH_OutputParamManager class

Namespace: [Grasshopper.Kernel](https://developer.rhino3d.com/api/gh1/namespace/grasshopper.kernel.md) · Assembly: [Grasshopper](https://developer.rhino3d.com/api/gh1/assembly/grasshopper.md)

```cs
protected class GH_Component.GH_OutputParamManager : GH_Component.GH_ParamManager
```

This class is used during Component construction to add output parameters.

## Properties

- [ParamCount](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/paramcount.md): Returns the number of output parameters already part of this component.

## Indexers

- [Param](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/item.md): Gets the output parameter at the given index.

## Methods

- [AddArcParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addarcparameter.md): Add a 3D Arc parameter to the output list of this component.
- [AddBooleanParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addbooleanparameter.md): Add a Boolean parameter to the output list of this component.
- [AddBoxParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addboxparameter.md): Add a 3D Box parameter to the output list of this component.
- [AddBrepParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addbrepparameter.md): Add a Brep parameter to the output list of this component. Brep parameters can handle both trimmed and untrimmed single or multi-faced Breps.
- [AddCircleParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addcircleparameter.md): Add a 3D Circle parameter to the output list of this component.
- [AddColourParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addcolourparameter.md): Add a ARGB Colour parameter to the output list of this component.
- [AddComplexNumberParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addcomplexnumberparameter.md): Add a Complex Number parameter to the output list of this component.
- [AddCultureParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addcultureparameter.md): Add a Culture parameter to the output list of this component.
- [AddCurveParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addcurveparameter.md): Add a Curve parameter to the output list of this component. Curve parameters can handle all curve types (Lines, Polylines, Circles, Arcs, NurbsCurves etc.)
- [AddFieldParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addfieldparameter.md): Add a Field parameter to the output list of this component.
- [AddGenericParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addgenericparameter.md): Add a Generic parameter to the output list of this component. Generic parameters can handle all types of data.
- [AddGeometryParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addgeometryparameter.md): Add a Geometry parameter to the output list of this component. Geometry parameters can handle all types that represent actual shapes.
- [AddGroupParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addgroupparameter.md): Add a Transform Group parameter to the output list of this component. Groups are collections of geometry that are transformed as one, they are not the same as Rhino groups.
- [AddIntegerParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addintegerparameter.md): Add a Integer parameter to the output list of this component.
- [AddInterval2DParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addinterval2dparameter.md): Add a Interval2D (i.e. uv domain) parameter to the output list of this component.
- [AddIntervalParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addintervalparameter.md): Add a Interval (i.e. numeric domain) parameter to the output list of this component.
- [AddLineParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addlineparameter.md): Add a 3D Line parameter to the output list of this component.
- [AddMatrixParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addmatrixparameter.md): Add a Matrix parameter to the output list of this component.
- [AddMeshFaceParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addmeshfaceparameter.md): Add a topological MeshFace parameter to the output list of this component.
- [AddMeshParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addmeshparameter.md): Add a Mesh parameter to the output list of this component.
- [AddNumberParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addnumberparameter.md): Add a floating point Number parameter to the output list of this component.
- [AddParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addparameter.md): (2 overloads) Generic parameter addition. If you cannot use one of the utility methods provided by this class, you can register a customized parameter using this method.
- [AddPathParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addpathparameter.md): Add a Data Path parameter to the output list of this component.
- [AddPlaneParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addplaneparameter.md): Add a 3D Plane parameter to the output list of this component.
- [AddPointParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addpointparameter.md): Add a 3D Point parameter to the output list of this component.
- [AddRectangleParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addrectangleparameter.md): Add a 3D Rectangle parameter to the output list of this component.
- [AddSubDParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addsubdparameter.md): Add a Sub-D parameter to the output list of this component.
- [AddSurfaceParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addsurfaceparameter.md): Add a Surface parameter to the output list of this component. Surface parameters can handle both trimmed and untrimmed single-faced Breps.
- [AddTextParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addtextparameter.md): Add a Text parameter to the output list of this component.
- [AddTimeParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addtimeparameter.md): Add a Time parameter to the output list of this component.
- [AddTransformParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addtransformparameter.md): Add a Transformation parameter to the output list of this component.
- [AddVectorParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/addvectorparameter.md): Add a 3D Vector parameter to the output list of this component.
- [HideParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/hideparameter.md): Hide a specific output parameter. If the parameter at the given index implement IGH_PreviewObject then the Hidden flag will be set to True. Otherwise, nothing will happen.
- [Register_2DIntervalParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-2dintervalparam.md): (2 overloads) Register a new two-dimensional OnInterval parameter
- [Register_ArcParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-arcparam.md): (2 overloads) Register a new 3D arc parameter
- [Register_BooleanParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-booleanparam.md): (2 overloads) Register a new Boolean primitive parameter
- [Register_BoxParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-boxparam.md): (2 overloads) Register a new 3D box parameter
- [Register_BRepParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-brepparam.md): (2 overloads) Register a new 3D Brep parameter
- [Register_CircleParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-circleparam.md): (2 overloads) Register a new 3D circle parameter
- [Register_ColourParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-colourparam.md): (2 overloads) Register a new Colour primitive parameter
- [Register_ComplexParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-complexparam.md): (2 overloads) Register a new Complex primitive parameter
- [Register_CurveParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-curveparam.md): (2 overloads) Register a new 3D curve parameter
- [Register_DoubleParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-doubleparam.md): (2 overloads) Register a new Double primitive parameter
- [Register_FieldParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-fieldparam.md): (2 overloads) Register a new field parameter
- [Register_GenericParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-genericparam.md): (2 overloads) Register a new Generic (Object) parameter
- [Register_GeometryParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-geometryparam.md): (2 overloads) Register a new 3D geometry parameter
- [Register_GroupParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-groupparam.md): (2 overloads) Register a new geometric group parameter
- [Register_IntegerParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-integerparam.md): (2 overloads) Register a new Integer primitive parameter
- [Register_IntervalParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-intervalparam.md): (2 overloads) Register a new Interval parameter
- [Register_LineParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-lineparam.md): (2 overloads) Register a new 3D line parameter
- [Register_MatrixParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-matrixparam.md): (2 overloads) Register a new matrix parameter
- [Register_MeshFaceParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-meshfaceparam.md): (2 overloads) Register a new 3D Mesh face parameter
- [Register_MeshParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-meshparam.md): (2 overloads) Register a new 3D Mesh parameter
- [Register_PathParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-pathparam.md): (2 overloads) Register a new Data Structure path parameter
- [Register_PlaneParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-planeparam.md): (2 overloads) Register a new 3D plane parameter
- [Register_PointParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-pointparam.md): (2 overloads) Register a new 3D point parameter
- [Register_RectangleParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-rectangleparam.md): (2 overloads) Register a new 3D rectangle parameter
- [Register_StringParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-stringparam.md): (2 overloads) Register a new String primitive parameter
- [Register_SurfaceParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-surfaceparam.md): (2 overloads) Register a new 3D surface parameter
- [Register_TransformParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-transformparam.md): (2 overloads) Register a new Transform parameter
- [Register_VectorParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/register-vectorparam.md): (2 overloads) Register a new 3D vector parameter
- [RegisterParam](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-outputparammanager/registerparam.md): (4 overloads) Generic parameter registration. This class provides methods to register standard parameters, but if you have a special type you're in charge of setting it all up yourself.

## Inherited Members

- From [GH_Component.GH_ParamManager](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-parammanager.md): [FixUpParameter](https://developer.rhino3d.com/api/gh1/type/grasshopper.kernel.gh-component.gh-parammanager/fixupparameter.md)