/// <summary>
/// Locks the video of the current selected participant in the video gallery.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonLockVideo_Click(object sender, EventArgs e)
{
try
{
participant.BeginLockVideo(LockVideoCallback, null);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}