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//窗体启动延时
this.Show();//显示窗体及元素
Application.DoEvents();//交还控制权
Thread.Sleep(TimeSpan.FromSeconds(6));//延时6秒

//获取错误代码
ex.GetType().GUID.ToString();

//测运行时长
using System.Diagnostics;
Stopwatch sp = new Stopwatch();
Console.WriteLine("开始写入数据");
sp.Start();//开始计时
//执行部分
sp.Stop();//停止
Console.WriteLine($"写入完成{sp.ElapsedMilliseconds}毫秒");