使用WindowsFormsApplicationBase实现引导界面

1.需要添加对Microsoft.VisualBasic 引用,

2.准备frmMain,frmSplash两个窗口

 说明:
        frmSplash在主线程上建立，但是在独立线程上进行消息循环
        当protected override void OnCreateMainForm  方法执行完毕，会隐藏frmSplash
        可以在OnCreateMainForm中执行预加载操作，或者在frmMain的构造里执行，不要在frmMain的OnLoad事件中进行
        当需要改边frmSplash窗体上控件属性时（如显示加载提示等）需要使用控件的Invoke

 

using System;

using System.Collections.Generic;

using System.Windows.Forms;



namespace SplashLoader

{

    static class Program

    {

        /// <summary>

        /// 应用程序的主入口点。

        /// </summary>

        [STAThread]

        static void Main(String[] args)

        {

            Application.EnableVisualStyles();

            Application.SetCompatibleTextRenderingDefault(false);

            new SplashApp().Run(args);

        }

    }

}

View Code

 

using System;

using System.Collections.Generic;

using System.Text;

using Microsoft.VisualBasic.ApplicationServices;

using System.Diagnostics;

using System.Windows.Forms;

using System.IO;

using System.Threading;

using System.Reflection;

using System.Configuration;

using ISplashLoader;



namespace SplashLoader

{

    public class SplashApp : WindowsFormsApplicationBase

    {



        private frmSplash _frmSplash = null;



        protected override void OnCreateSplashScreen()

        {

            //在主UI线程上运行

            Console.WriteLine("OnCreateSplashScreen:" + Thread.CurrentThread.ManagedThreadId);

            //这里调用是在主线程上的

            //但是SplashForm的消息循环是在独立线程上的

            //可以在SplashForm的OnLoad事件中看到是一个独立的线程

            //因此OnCreateMainForm即使阻塞了，SplashForm也能正常绘制

            //可以把数据初试化操作放在frmMain的构造函数中

            //但是不要放在OnLoad事件中，因为在OnLoad时UI界面已经绘制完成

            //如果在里面放置一些阻塞型的操作会导致界面卡死

            //SplashForm在frmMain的OnLoad调用时隐藏（没有发现调用close事件--会有短暂延迟)

            //

            _frmSplash = new frmSplash();

            SplashScreen = _frmSplash;



            SplashScreen.ShowInTaskbar = false;

            SplashScreen.Cursor = System.Windows.Forms.Cursors.AppStarting;

        }



        private bool CheckUpgrade()

        {

            if (this.CommandLineArgs.Count > 0)

            {

                if (string.Compare(CommandLineArgs[0], "Upgrade:Skip", true) == 0)

                {

                    return false;

                }

            }

            return true;

        }

        protected override void OnCreateMainForm()

        {

            try

            {



                //在主UI线程上运行

                Console.WriteLine("OnCreateMainForm:" + Thread.CurrentThread.ManagedThreadId);





                //注意使用SplashForm 后，可以在主窗体的构造中加载数据

                //或者在SplashApp的OnCreateMainForm()中，不要放在frmMain的OnLoad事件中





                if (CheckUpgrade())

                {



                    _frmSplash.SetTips("检测是否有新的版本...");







                    Process pa = new Process();

                    pa.StartInfo.UseShellExecute = false;

                    pa.StartInfo.FileName = Path.Combine(Application.StartupPath, @"UpdateApp.exe");

                    pa.StartInfo.Arguments = "AppStart";

                    pa.Start();

                    while (!pa.HasExited) ;



                }







                String assembley = ConfigurationManager.AppSettings["MainAssembly"];

                String type = ConfigurationManager.AppSettings["MainForm"];

                MainForm = CreateForm(assembley, type, _frmSplash);







            }

            catch (Exception e)

            {

                //处理动态加载过程中的异常

                MessageBox.Show(e.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);

            }



        }



        /// <summary>

        /// 动太加载窗体

        /// </summary>

        /// <param name="assembly">如:FIStudio.WinUI.(exe|dll)</param>

        /// <param name="type">FIStudio.WinUI.UI.frmCooperatorMgr</param>

        /// <returns></returns>

        private Form CreateForm(String assembly,String type,ILoadTips loadTips)

        {

            String  a = System.IO.Path.GetFileNameWithoutExtension(assembly);

            Type  t = Assembly.Load(a).GetType(type, true);

            Form frm = Activator.CreateInstance(t, new Object[] { loadTips }) as Form;

            return frm;

        }





    }

}

View Code

 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Threading;

using ISplashLoader;



namespace SplashLoader

{

    public partial class frmSplash : Form ,ILoadTips

    {

        public frmSplash()

        {

            InitializeComponent();

            BackgroundImageLayout = ImageLayout.Stretch;

            FormBorderStyle = FormBorderStyle.None;

            StartPosition = FormStartPosition.CenterScreen;

            Console.WriteLine("SplashForm:" + Thread.CurrentThread.ManagedThreadId);

        }

        delegate void SetTipsHandle(String tips);

        public void SetTips(String tips)

        {

            if (lblTips.InvokeRequired)

            {

                lblTips.Invoke(new SetTipsHandle(SetTips), tips);

            }

            else

            {

                lblTips.Text = tips;

            }

        }

        private void frmSplash_Load(object sender, EventArgs e)

        {

            Console.WriteLine("SplashForm_Load:" + Thread.CurrentThread.ManagedThreadId);

        }

    }

}

View Code

 

Demo:参考华为网盘/软件测试与任务/引导窗体