> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# XblMultiplayerSessionChangeEventArgs

> XblMultiplayerSessionChangeEventArgs

# XblMultiplayerSessionChangeEventArgs

Arguments passed to the event handler when a session change occurs.

## Syntax

```cpp theme={null}
typedef struct XblMultiplayerSessionChangeEventArgs {  
    XblMultiplayerSessionReference SessionReference;  
    char Branch[XBL_GUID_LENGTH];  
    uint64_t ChangeNumber;  
} XblMultiplayerSessionChangeEventArgs  
```

### Members

*SessionReference*\
Type: [XblMultiplayerSessionReference](/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionreference)

The session that triggered this event.

*Branch*\
Type: char\[XBL\_GUID\_LENGTH]

The branch of the session used to scope change numbers.

*ChangeNumber*\
Type: uint64\_t

The change number of the session.

## Requirements

**Header:** multiplayer\_c.h

## See also

[multiplayer\_c](/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members)


## Related topics

- [XblMultiplayerSessionChangedHandler](/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessionchangedhandler.md)
- [Multiplayer tasks](/services/xbox-services/multiplayer/mpsd/how-to/live-mpsd-how-tos.md)
- [XblMultiplayerEventArgsPropertiesJson](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargspropertiesjson.md)
- [XblMultiplayerSessionChangeTypes](/reference/live/xsapi-c/multiplayer_c/enums/xblmultiplayersessionchangetypes.md)
- [XblStatisticChangeEventArgs](/reference/live/xsapi-c/user_statistics_c/structs/xblstatisticchangeeventargs.md)