笔记0516

1。textbox输入文本，点击enter响应某按钮事件：

            txt.Attributes.Add("onkeydown", "if(event.keyCode==13){document.all." + btnsave.ClientID + ".focus();document.all." + this.btnsave.ClientID + ".click();}");

2.string.format():

            string info = string.Format("order为：{0}的数为：{1}", arr[i].ToString(), arr[i].ToString()) + "\r\n";