---
title: requestCount
framework: usbdriverkit
role: symbol
role_heading: Instance Property
path: usbdriverkit/iousbisochronousframe/requestcount
---

# requestCount

The number of bytes to transfer for this frame.

## Declaration

```occ
uint32_t requestCount;
```

## Discussion

Discussion Set the value of this field before making an isochronous request.

## See Also

### Getting the Frame Properties

- [status](usbdriverkit/iousbisochronousframe/status.md)
- [completeCount](usbdriverkit/iousbisochronousframe/completecount.md)
- [reserved](usbdriverkit/iousbisochronousframe/reserved.md)
- [timeStamp](usbdriverkit/iousbisochronousframe/timestamp.md)