## OdsoFieldMapDataCollection class

A typed collection of the [`OdsoFieldMapData`](../odsofieldmapdata/) objects.

To learn more, visit the [Mail Merge and Reporting](https://docs.aspose.com/words/net/mail-merge-and-reporting/) documentation article.

```csharp
public class OdsoFieldMapDataCollection : IEnumerable<OdsoFieldMapData>
```

## Constructors

| Name | Description |
| --- | --- |
| [OdsoFieldMapDataCollection](odsofieldmapdatacollection/)() | The default constructor. |

## Properties

| Name | Description |
| --- | --- |
| [Count](../../aspose.words.settings/odsofieldmapdatacollection/count/) { get; } | Gets the number of elements contained in the collection. |
| [Item](../../aspose.words.settings/odsofieldmapdatacollection/item/) { get; set; } | Gets or sets an item in this collection. |

## Methods

| Name | Description |
| --- | --- |
| [Add](../../aspose.words.settings/odsofieldmapdatacollection/add/)(*[OdsoFieldMapData](../odsofieldmapdata/)*) | Adds an object to the end of this collection. |
| [Clear](../../aspose.words.settings/odsofieldmapdatacollection/clear/)() | Removes all elements from this collection. |
| [GetEnumerator](../../aspose.words.settings/odsofieldmapdatacollection/getenumerator/)() | Returns an enumerator object that can be used to iterate over all items in the collection. |
| [RemoveAt](../../aspose.words.settings/odsofieldmapdatacollection/removeat/)(*int*) | Removes the element at the specified index. |

## Examples

Shows how to access the collection of data that maps data source columns to merge fields.

```csharp
Document doc = new Document(MyDir + "Odso data.docx");

// This collection defines how a mail merge will map columns from a data source
// to predefined MERGEFIELD, ADDRESSBLOCK and GREETINGLINE fields.
OdsoFieldMapDataCollection dataCollection = doc.MailMergeSettings.Odso.FieldMapDatas;
Assert.That(dataCollection.Count, Is.EqualTo(30));

using (IEnumerator<OdsoFieldMapData> enumerator = dataCollection.GetEnumerator())
{
    int index = 0;
    while (enumerator.MoveNext())
    {
        Console.WriteLine($"Field map data index {index++}, type \"{enumerator.Current.Type}\":");

        Console.WriteLine(
            enumerator.Current.Type != OdsoFieldMappingType.Null
                ? $"\tColumn \"{enumerator.Current.Name}\", number {enumerator.Current.Column} mapped to merge field \"{enumerator.Current.MappedName}\"."
                : "\tNo valid column to field mapping data present.");
    }
}

// Clone the elements in this collection.
Assert.That(dataCollection[0].Clone(), Is.Not.EqualTo(dataCollection[0]));

// Use the "RemoveAt" method elements individually by index.
dataCollection.RemoveAt(0);

Assert.That(dataCollection.Count, Is.EqualTo(29));

// Use the "Clear" method to clear the entire collection at once.
dataCollection.Clear();

Assert.That(dataCollection.Count, Is.EqualTo(0));
```

### See Also

* class [OdsoFieldMapData](../odsofieldmapdata/)
* property [FieldMapDatas](../odso/fieldmapdatas/)
* namespace [Aspose.Words.Settings](../../aspose.words.settings/)
* assembly [Aspose.Words](../../)