## ValidationCollection class


Represents data validation collection.

```cpp
class ValidationCollection
```

## Methods

| Method | Description |
| --- | --- |
| [Add(const CellArea\& ca)](./add/) | Adds a data validation to the collection. |
| [begin()](./begin/) | Returns an iterator to the beginning of the [ValidationCollection](./). |
| [end()](./end/) | Returns an iterator to the end of the [ValidationCollection](./). |
| [Get(int32_t index)](./get/) | Gets the [Validation](../validation/) element at the specified index. |
| [GetCount()](./getcount/) | Gets the number of elements contained in the instance. |
| [GetValidationInCell(int32_t row, int32_t column)](./getvalidationincell/) | Gets the validation applied to given cell. |
| [IsNull()](./isnull/) const | Checks whether the implementation object is nullptr. |
| explicit [operator bool()](./operator_bool/) const | operator bool() |
| [operator=(const ValidationCollection\& src)](./operator_asm/) | operator= |
| [RemoveACell(int32_t row, int32_t column)](./removeacell/) | Removes all validation setting on the cell. |
| [RemoveArea(const CellArea\& ca)](./removearea/) | Removes all validation setting on the range.. |
| [ValidationCollection(ValidationCollection_Impl* impl)](./validationcollection/) | Constructs from an implementation object. |
| [ValidationCollection(const ValidationCollection\& src)](./validationcollection/) | Copy constructor. |
| [~ValidationCollection()](./~validationcollection/) | Destructor. |
## Fields

| Field | Description |
| --- | --- |
| [_impl](./_impl/) | The implementation object. |

## Examples


```cpp
Aspose::Cells::Startup();
Workbook workbook;
ValidationCollection validations = workbook.GetWorksheets().Get(0).GetValidations();
CellArea area = CellArea::CreateCellArea(0, 0, 1, 1);
Validation validation = validations.Get(validations.Add(area));
validation.SetType(ValidationType::List);
validation.SetFormula1(u"a,b,c,d");

Aspose::Cells::Cleanup();
```

## See Also

* Namespace [Aspose::Cells](../)
* Library [Aspose.Cells for C++](../../)