public AsyncUpdateMessageHelper(Control invokeControl, UpdateMessageDelegate updateMessage)
{
InvokeControl = invokeControl;
UpdateMessage = updateMessage;
AsyncFormEventBus.Register <AsyncFormMessageEvent>(UpdateUi);
WithPrefix = true;
AutoAppendLine = true;
}
protected AsyncForm()
{
if (!this.DesignMode)
{
//抽象类会导致Vs设计器无法显示的问题...
_showStateCallback = ShowCallbackMessage;
AsyncFormEventBus.Register <AsyncFormMessageEvent>(UpdateUi);
WithPrefix = true;
}
}
//此方法支持在自动判断是否在非创建线程中被调用
private void UpdateUi(AsyncFormMessageEvent messageEvent)
{
if (!AsyncFormEventBus.ShouldRaise())
{
return;
}
string value = string.Format("{0}{1}", messageEvent.Message, AutoAppendLine ? Environment.NewLine : string.Empty);
if (WithPrefix)
{
value = messageEvent.DateTimeEventOccurred.ToString("yyyy-MM-dd HH:mm:ss:fff") + " => " + value;
}
if (InvokeControl.InvokeRequired)
{
InvokeControl.Invoke(UpdateMessage, value);
}
else
{
UpdateMessage(value);
}
}
//此方法会在非UI线程中被调用
private void UpdateUi(AsyncFormMessageEvent obj)
{
if (!AsyncFormEventBus.ShouldRaise())
{
return;
}
string value = string.Format("{0}{1}", obj.Message, Environment.NewLine);
if (WithPrefix)
{
value = obj.DateTimeEventOccurred.ToString("yyyy-MM-dd HH:mm:ss:fff") + " => " + value;
}
var invoker = GetInvoker();
if (invoker.InvokeRequired)
{
invoker.Invoke(_showStateCallback, value);
}
else
{
_showStateCallback.Invoke(value);
}
}
