## ExternalLink class

Represents an external link in a workbook.

```javascript
class ExternalLink;
```


### Example
```javascript
const { Workbook } = require("aspose.cells.node");

//Open a file with external links
var workbook = new Workbook("input/Externlink.xls");

//Get External Link 
var externalLink = workbook.worksheets.externalLinks.get(0);
//Change External Link's Data Source
externalLink.dataSource = "input/Book1.xls";
```
## Properties

| Property | Type | Description |
| --- | --- | --- |
| [type](#type--)| ExternalLinkType | Readonly. Gets the type of external link. |
| [pathType](#pathType--)| string | Readonly. Get the path type of this external link |
| [originalDataSource](#originalDataSource--)| string | Represents stored data source of the external link. |
| [dataSource](#dataSource--)| string | Represents data source of the external link. |
| [isReferred](#isReferred--)| boolean | Readonly. Indicates whether this external link is referenced by others. |
| [isVisible](#isVisible--)| boolean | Readonly. Indicates whether this external link is visible in MS Excel. |

## Methods

| Method | Description |
| --- | --- |
| [getType()](#getType--)| <b>@deprecated.</b> Please use the 'type' property instead. Gets the type of external link. |
| [getPathType()](#getPathType--)| <b>@deprecated.</b> Please use the 'pathType' property instead. Get the path type of this external link |
| [getOriginalDataSource()](#getOriginalDataSource--)| <b>@deprecated.</b> Please use the 'originalDataSource' property instead. Represents stored data source of the external link. |
| [setOriginalDataSource(string)](#setOriginalDataSource-string-)| <b>@deprecated.</b> Please use the 'originalDataSource' property instead. Represents stored data source of the external link. |
| [getDataSource()](#getDataSource--)| <b>@deprecated.</b> Please use the 'dataSource' property instead. Represents data source of the external link. |
| [setDataSource(string)](#setDataSource-string-)| <b>@deprecated.</b> Please use the 'dataSource' property instead. Represents data source of the external link. |
| [isReferred()](#isReferred--)| <b>@deprecated.</b> Please use the 'isReferred' property instead. Indicates whether this external link is referenced by others. |
| [isVisible()](#isVisible--)| <b>@deprecated.</b> Please use the 'isVisible' property instead. Indicates whether this external link is visible in MS Excel. |
| [addExternalName(string, string)](#addExternalName-string-string-)| Adds an external name. |
| [isNull()](#isNull--)| Checks whether the implementation object is null. |


### type {#type--}

Readonly. Gets the type of external link.

```javascript
type : ExternalLinkType;
```


### pathType {#pathType--}

Readonly. Get the path type of this external link

```javascript
pathType : string;
```


### originalDataSource {#originalDataSource--}

Represents stored data source of the external link.

```javascript
originalDataSource : string;
```


### dataSource {#dataSource--}

Represents data source of the external link.

```javascript
dataSource : string;
```


### isReferred {#isReferred--}

Readonly. Indicates whether this external link is referenced by others.

```javascript
isReferred : boolean;
```


### isVisible {#isVisible--}

Readonly. Indicates whether this external link is visible in MS Excel.

```javascript
isVisible : boolean;
```


### getType() {#getType--}

<b>@deprecated.</b> Please use the 'type' property instead. Gets the type of external link.

```javascript
getType() : ExternalLinkType;
```


**Returns**

[ExternalLinkType](../externallinktype/)

### getPathType() {#getPathType--}

<b>@deprecated.</b> Please use the 'pathType' property instead. Get the path type of this external link

```javascript
getPathType() : string;
```


### getOriginalDataSource() {#getOriginalDataSource--}

<b>@deprecated.</b> Please use the 'originalDataSource' property instead. Represents stored data source of the external link.

```javascript
getOriginalDataSource() : string;
```


### setOriginalDataSource(string) {#setOriginalDataSource-string-}

<b>@deprecated.</b> Please use the 'originalDataSource' property instead. Represents stored data source of the external link.

```javascript
setOriginalDataSource(value: string) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| value | string | The value to set. |

### getDataSource() {#getDataSource--}

<b>@deprecated.</b> Please use the 'dataSource' property instead. Represents data source of the external link.

```javascript
getDataSource() : string;
```


### setDataSource(string) {#setDataSource-string-}

<b>@deprecated.</b> Please use the 'dataSource' property instead. Represents data source of the external link.

```javascript
setDataSource(value: string) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| value | string | The value to set. |

### isReferred() {#isReferred--}

<b>@deprecated.</b> Please use the 'isReferred' property instead. Indicates whether this external link is referenced by others.

```javascript
isReferred() : boolean;
```


### isVisible() {#isVisible--}

<b>@deprecated.</b> Please use the 'isVisible' property instead. Indicates whether this external link is visible in MS Excel.

```javascript
isVisible() : boolean;
```


### addExternalName(string, string) {#addExternalName-string-string-}

Adds an external name.

```javascript
addExternalName(text: string, referTo: string) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| text | string | The text of the external name.         /// If the external name belongs to a worksheet, the text should be as Sheet1!Text. |
| referTo | string | The referTo of the external name. It must be a cell or the range. |

### isNull() {#isNull--}

Checks whether the implementation object is null.

```javascript
isNull() : boolean;
```