C# loading界面，可做耗时操作，可改变文本

本文链接：https://blog.youkuaiyun.com/weixin_42103688/article/details/124773396

问题描述

`winform程序中某些耗时操作需要等待页面一直刷新，让用户知道界面没有假死。效果如图：

C# loading master

下面是部分代码。有兴趣可以去我的资源里面下载，链接在最下方。

OpaqueCommand cmd = new OpaqueCommand();
            Task tsk = null;
            cmd.ShowOpaqueLayer(panel1, 155, true, "Updating...");
            tsk = new Task(() => {
                //your operation
                int i = 1;
                while (i < 50)
                {
                    System.Threading.Thread.Sleep(100);
                    i++;
                }
            });

            tsk.Start();
            //waiting the task completed
            while (!tsk.IsCompleted)
            {
                System.Threading.Thread.Sleep(100);
                Application.DoEvents();
            }
            cmd.HideOpaqueLayer();
            System.Threading.Thread.Sleep(100);
            cmd.ShowOpaqueLayer(panel1, 155, true, "Loading...");
            tsk = new Task(() => {
                //your operation
                int i = 1;
                while (i < 50)
                {
                    System.Threading.Thread.Sleep(100);
                    i++;
                }
            });

            tsk.Start();
            //waiting the task completed
            while (!tsk.IsCompleted)
            {
                System.Threading.Thread.Sleep(100);
                Application.DoEvents();
            }
            cmd.HideOpaqueLayer();