f8/sdk/dart/package-fidl_fidl/ProxyController/bind.md

# bind method








void bind
([InterfaceHandle](../../package-fidl_fidl/InterfaceHandle-class.md)<T> interfaceHandle)





<p>Binds the proxy to the given interface handle.</p>
<p>Calls to the proxy will be encoded as messages and sent over the channel
underlying the given interface handle.</p>
<p>This object must not already be bound.</p>
<p>The <code>interfaceHandle</code> parameter must not be null. The <code>channel</code> property
of the given <code>interfaceHandle</code> must not be null.</p>



## Implementation

```dart
void bind(InterfaceHandle<T> interfaceHandle) {
  assert(!isBound);
  _reader.bind(interfaceHandle.passChannel()!);

  _boundCompleter.complete();
  final callback = onBind;
  if (callback != null) {
    callback();
  }
}
```