# IPolylineDrawingItem interface

*No description yet.*

```csharp
public interface IPolylineDrawingItem : IDrawingItem
```

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

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

## Methods

| Method | Returns | Description |
| --- | --- | --- |
| [AddVertex](#addvertex) | `void` |  |
| [GetVertex](#getvertex) | [Point](https://altiumdeveloper.github.io/ad-sdk-docs/reference/dxp/Point.md) |  |
| [GetVerticesCount](#getverticescount) | `int` |  |

### AddVertex

*No description yet.*

```csharp
void AddVertex(Point argPoint);
void AddVertex(IPoint argPoint);
```

| Parameter | Type | Passing |
| --- | --- | --- |
| `argPoint` | [Point](https://altiumdeveloper.github.io/ad-sdk-docs/reference/dxp/Point.md) | value |

**Returns:** nothing (`void`)

The first overload is an extension method of `IPolylineDrawingItemHelper` (`using EDP;`) with typed parameters; the second is declared by the interface.

### GetVertex

*No description yet.*

```csharp
Point GetVertex(int argIndex);
```

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

**Returns:** [Point](https://altiumdeveloper.github.io/ad-sdk-docs/reference/dxp/Point.md)

Extension method of `IPolylineDrawingItemHelper` (`using EDP;`).

### GetVerticesCount

*No description yet.*

```csharp
int GetVerticesCount();
```

**Returns:** `int`

## Inherited members

- From [IDrawingItem](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDrawingItem.md): [AreaBottom](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDrawingItem.md#areabottom), [AreaLeft](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDrawingItem.md#arealeft), [AreaRight](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDrawingItem.md#arearight), [AreaTop](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDrawingItem.md#areatop), [ItemType](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDrawingItem.md#itemtype), [LineSize](https://altiumdeveloper.github.io/ad-sdk-docs/reference/edp/IDrawingItem.md#linesize)