界面 --- 添加一个Windows.Forms.RichTextBox 控件 代码 --- 申明功能 ~~~ /// <summary>         /// 异步显示消息         /// </summary>         /// <param name="strMsg"></param>         new delegate void ShowMessageHandler(string strMsg);         private void ShowMessage(string strMsg)         {             if (this.IsHandleCreated)             {                 ShowMessageHandler smi = new ShowMessageHandler(ShowMessageInvoke);                 this.BeginInvoke(smi, strMsg);             }         }         private new void ShowMessageInvoke(string strMsg)         {             if (!String.IsNullOrEmpty(strMsg.Trim()))             {                 if (this.richMsg.Lines.Count() >= 10000)                 {                     this.richMsg.Clear();                 }                 this.richMsg.AppendText("[" + DateTime.Now.ToString() + "] " + strMsg + "\r");                 this.richMsg.Select(this.richMsg.TextLength, 0);                 this.richMsg.ScrollToCaret();             }         } ~~~ 调用 ``` ShowMessage("消息内容"); ```