# IObjectClass interface

The `IObjectClass` interface is the ancestor object class interface for Channel Class, Component Class and Net Class interfaces.

```csharp
public interface IObjectClass : IDMObject
```

**Namespace:** EDP · **Assembly:** Altium.SDK.Interfaces

**Inherits:** [IDMObject](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md)

**Derived:** [IChannelClass](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IChannelClass.md), [IComponentClass](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IComponentClass.md), [IDifferentialPair](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDifferentialPair.md), [INetClass](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/INetClass.md)

## Methods

| Method | Returns | Description |
| --- | --- | --- |
| [DM_MemberCount](#dm_membercount) | `int` | The method returns the number of members associated with the object class (one of its descendants ie Channel Class, Component class or Net class). |
| [DM_Members](#dm_members) | `string` | The method returns the indexed member of the object class (one of its descendants that is, a channel class, component class or a net class). |
| [DM_Name](#dm_name) | `string` | The method returns the name of the Object class (one of its descendants ie Channel Class, Component class or Net class) |

### DM_MemberCount

The method returns the number of members associated with the object class (one of its descendants ie Channel Class, Component class or Net class).

```csharp
int DM_MemberCount();
```

**Returns:** `int`

This method is to be used in conjunction with the [`DM_Members`](#dm_members)(index) method.

### DM_Members

The method returns the indexed member of the object class (one of its descendants that is, a channel class, component class or a net class).

```csharp
string DM_Members(int argIndex);
```

| Parameter | Type | Passing |
| --- | --- | --- |
| `argIndex` | `int` | value |

**Returns:** `string`

### DM_Name

The method returns the name of the Object class (one of its descendants ie Channel Class, Component class or Net class)

```csharp
string DM_Name();
```

**Returns:** `string`

## Inherited members

- From [IDMObject](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md): [DM_CalculateParameterValue](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_calculateparametervalue), [DM_CurrentSheetInstanceNumber](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_currentsheetinstancenumber), [DM_FullCrossProbeString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_fullcrossprobestring), [DM_GeneralField](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_generalfield), [DM_GetVCSProject](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_getvcsproject), [DM_ImageIndex](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_imageindex), [DM_IsFormulaString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_isformulastring), [DM_IsInferredObject](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_isinferredobject), [DM_LocationString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_locationstring), [DM_LocationX](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_locationx), [DM_LocationY](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_locationy), [DM_LongDescriptorString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_longdescriptorstring), [DM_NetIndex_Flat](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_netindex_flat), [DM_NetIndex_Sheet](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_netindex_sheet), [DM_NetIndex_SubNet](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_netindex_subnet), [DM_ObjectKindString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_objectkindstring), [DM_ObjectKindStringForCrossProbe](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_objectkindstringforcrossprobe), [DM_OwnerDocument](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_ownerdocument), [DM_OwnerDocumentFullPath](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_ownerdocumentfullpath), [DM_OwnerDocumentName](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_ownerdocumentname), [DM_ParameterCount](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_parametercount), [DM_Parameters](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_parameters), [DM_PcbHandle](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_pcbhandle), [DM_PCBObjectHandle](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_pcbobjecthandle), [DM_PCBObjectInterface](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_pcbobjectinterface), [DM_PrimaryCrossProbeString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_primarycrossprobestring), [DM_SchHandle](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_schhandle), [DM_SCHObjectHandle](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_schobjecthandle), [DM_SCHObjectInterface](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_schobjectinterface), [DM_SecondaryCrossProbeString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_secondarycrossprobestring), [DM_SetVCSProject](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_setvcsproject), [DM_SheetIndex_Logical](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_sheetindex_logical), [DM_SheetIndex_Physical](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_sheetindex_physical), [DM_ShortDescriptorString](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_shortdescriptorstring), [DM_ValidForNavigation](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_validfornavigation), [DM_VHDLEntity](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDMObject.md#dm_vhdlentity)