## CheckBoxCollection class

Represents a collection of [CheckBox](../checkbox/) objects in a worksheet.

```javascript
class CheckBoxCollection;
```


### Example
```javascript
const { Workbook } = AsposeCells;

var excel = new Workbook();
var index = excel.worksheets.get(0).getCheckBoxes().add(15, 15, 20, 100);
var checkBox = excel.worksheets.get(0).getCheckBoxes().get(index);
checkBox.text = "Check Box 1";
```
## Methods

| Method | Description |
| --- | --- |
| [get(number)](#get-number-)| Gets the [CheckBox](../checkbox/) element at the specified index. |
| [add(number, number, number, number)](#add-number-number-number-number-)| Adds a checkBox to the collection. |


### get(number) {#get-number-}

Gets the [CheckBox](../checkbox/) element at the specified index.

```javascript
get(index: number) : CheckBox;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | The zero based index of the element. |

**Returns**

The element at the specified index.

### add(number, number, number, number) {#add-number-number-number-number-}

Adds a checkBox to the collection.

```javascript
add(topRow: number, leftColumn: number, height: number, width: number) : number;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| topRow | number | Upper left row index. |
| leftColumn | number | Upper left column index. |
| height | number | Height of checkBox, in unit of pixel. |
| width | number | Width of checkBox, in unit of pixel. |

**Returns**

[CheckBox](../checkbox/) object index.