> For the complete documentation index, see [llms.txt](https://xplat.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xplat.gitbook.io/docs/xplat.foundation/imapchangedeventargs.md).

# IMapChangedEventArgs

> Namespace: XPlat.Foundation.Collections

Provides data for the changed event of a map collection.

```csharp
public interface IMapChangedEventArgs<K>
```

## Supported platforms

| Platform        | Version    |
| --------------- | ---------- |
| .NET Standard   | 2.0        |
| Xamarin.Android | 9.0        |
| Xamarin.iOS     | 1.0        |
| UWP             | 10.0.16299 |

## Properties

### CollectionChange

Gets the type of change that occurred in the map.

```csharp
CollectionChange CollectionChange { get; }
```

### Key

Gets the key of the item that changed.

```csharp
K Key { get; }
```

## Related information

### References

[IMapChangedEventArgs - Microsoft Docs](https://docs.microsoft.com/en-us/uwp/api/windows.foundation.collections.imapchangedeventargs_k_)