private void ServiceCommandManager_Removed(object sender, ServiceCommandEventArgs e)
{
ServiceCommand value;
_serviceCommand.TryRemove(e.Command.ServiceId, out value);
}
/// <summary>
/// 处理ServiceCommandManager控件的Add事件.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="ServiceCommandEventArgs" /> instance containing the event data.</param>
public void ServiceCommandManager_Add(object sender, ServiceCommandEventArgs e)
{
_serviceCommand.GetOrAdd(e.Command.ServiceId, e.Command);
}