如何在 windows 窗体应用程序中构建启动画面？

Question

I need to show splash screen on my application start for few seconds. Does anybody know how to implement this?

Will be much appreciate for the help.

Answer 1

First, create your splash screen as a borderless, immovable form with your image on it, set to initially display at the center of the screen, colored the way you want. All of this can be set from within the designer; specifically, you want to:

• Set the form's ControlBox, MaximizeBox, MinimizeBox and ShowIcon properties to "False"
• Set the StartPosition property to "CenterScreen"
• Set the FormBorderStyle property to "None"
• Set the form's MinimumSize and MaximumSize to be the same as its initial Size.

Then, you need to decide where to show it and where to dismiss it. These two tasks need to occur on opposite sides of the main startup logic of your program. This could be in your application's main() routine, or possibly in your main application form's Load handler; wherever you're creating large expensive objects, reading settings from the hard drive, and generally taking a long time to do stuff behind the scenes before the main application screen displays.

Then, all you have to do is create an instance of your form, Show() it, and keep a reference to it while you do your startup initialization. Once your main form has loaded, Close() it.

If your splash screen will have an animated image on it, the window will need to be "double-buffered" as well, and you will need to be absolutely sure that all initialization logic happens outside the GUI thread (meaning you cannot have your main loading logic in the mainform's Load handler; you'll have to create a BackgroundWorker or some other threaded routine.

Answer 2

Here are some guideline steps...

1. Create a borderless form (this will be your splash screen)
2. On application start, start a timer (with a few seconds interval)
3. Show your Splash Form
4. On Timer.Tick event, stop timer and close Splash form - then show your main application form

Give this a go and if you get stuck then come back and ask more specific questions relating to your problems

Answer 3

simple and easy solution to create splash screen

1. open new form use name "SPLASH"
2. change background image whatever you want
3. select progress bar
4. select timer

now set timer tick in timer:

private void timer1_Tick(object sender, EventArgs e)
{
    progressBar1.Increment(1);
    if (progressBar1.Value == 100) timer1.Stop();        
}

add new form use name "FORM-1"and use following command in FORM 1.

note: Splash form works before opening your form1

1. add this library

   using System.Threading;

2. create function

   public void splash() { Application.Run(new splash()); }

3. use following command in initialization like below.

    public partial class login : Form { public login() { Thread t = new Thread(new ThreadStart(splash)); t.Start(); Thread.Sleep(15625); InitializeComponent(); enter code here t.Abort(); } }

http://solutions.musanitech.com/c-create-splash-screen/

Answer 4

There is A Pretty Good Splash Screen over on CodeProject.

It comes with

• Fade In
• Progress Bar
• Status Label
• Fade Out
• Double Click to dismiss

The author has recently gone through and updated the code. It is really quite a piece of work, and is a collaboration between many different developers with good ideas.

Answer 5

I wanted a splash screen that would display until the main program form was ready to be displayed, so timers etc were no use to me. I also wanted to keep it as simple as possible. My application starts with (abbreviated):

static void Main()
{
    Splash frmSplash = new Splash();
    frmSplash.Show();
    Application.Run(new ReportExplorer(frmSplash));
}

Then, ReportExplorer has the following:

public ReportExplorer(Splash frmSplash)
{
    this.frmSplash = frmSplash;
    InitializeComponent();
}

Finally, after all the initialisation is complete:

if (frmSplash != null) 
{
     frmSplash.Close();
     frmSplash = null;
}

Maybe I'm missing something, but this seems a lot easier than mucking about with threads and timers.

Answer 6

create splash

private void timer1_Tick(object sender, EventArgs e)
{
    counter++;
    progressBar1.Value = counter *5;
    // label2.Text = (5*counter).ToString();
    if (counter ==20)
    {
        timer1.Stop();
        this.Close();
    }
}
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.SystemColors.GradientInactiveCaption;
this.ClientSize = new System.Drawing.Size(397, 283);
this.ControlBox = false;
this.Controls.Add(this.label2);
this.Controls.Add(this.progressBar1);
this.Controls.Add(this.label1);
this.ForeColor = System.Drawing.SystemColors.ControlLightLight;
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.Name = "Splash";
this.ShowIcon = false;
this.ShowInTaskbar = false;
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.ResumeLayout(false);
this.PerformLayout();

Then in your application

sp = new Splash();
sp.ShowDialog();

Answer 7

The other answers here cover this well, but it is worth knowing that there is built in functionality for splash screens in Visual Studio: If you open the project properties for the windows form app and look at the Application tab, there is a "Splash screen:" option at the bottom. You simply pick which form in your app you want to display as the splash screen and it will take care of showing it when the app starts and hiding it once your main form is displayed.

You still need to set up your form as described above (with the correct borders, positioning, sizing etc.)

Answer 8

Maybe a bit late to answer but i would like to share my way. I found an easy way with threads in the main program for a winform application.

Lets say you have your form "splashscreen" with an animation, and your "main" which has all your application code.

 [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Thread mythread;
        mythread = new Thread(new ThreadStart(ThreadLoop));
        mythread.Start();
        Application.Run(new MainForm(mythread));           
    }

    public static void ThreadLoop()
    {
        Application.Run(new SplashScreenForm());           
    }

In your main form in the constructor:

 public MainForm(Thread splashscreenthread)
    {
        InitializeComponent();

        //add your constructor code

        splashscreenthread.Abort();            
    }

This way the splashscreen will last just the time for your main form to load.

Your splashcreen form should have his own way to animate/display information. In my project my splashscreen start a new thread, and every x milliseconds it changes his main picture to another which is a slightly different gear, giving the illusion of a rotation.

example of my splashscreen:

int status = 0;
private bool IsRunning = false;
    public Form1()
    {
        InitializeComponent();
        StartAnimation();
    }

    public void StartAnimation()
    {
        backgroundWorker1.WorkerReportsProgress = false;
        backgroundWorker1.WorkerSupportsCancellation = true;
        IsRunning = true;
        backgroundWorker1.RunWorkerAsync();
    }


    public void StopAnimation()
    {
        backgroundWorker1.CancelAsync();
    }

    delegate void UpdatingThreadAnimation();
    public void UpdateAnimationFromThread()
    {

        try
        {
            if (label1.InvokeRequired == false)
            {
                UpdateAnimation();
            }
            else
            {
                UpdatingThreadAnimation d = new UpdatingThreadAnimation(UpdateAnimationFromThread);
                this.Invoke(d, new object[] { });
            }
        }
        catch(Exception e)
        {

        }
    }

 private void UpdateAnimation()
    {
    if(status ==0) 
    {
    // mypicture.image = image1
     }else if(status ==1)
     {
    // mypicture.image = image2
     }
    //doing as much as needed

      status++;
        if(status>1) //change here if you have more image, the idea is to set a cycle of images
        {
            status = 0;
        }
        this.Refresh();
    }

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        BackgroundWorker worker = sender as BackgroundWorker;
        while (IsRunning == true)
        {
            System.Threading.Thread.Sleep(100);
            UpdateAnimationFromThread();
        }
    }

Hope this will help some people. Sorry if i have made some mistakes. English is not my first language.

Answer 9

First you should create a form with or without Border (border-less is preferred for these things)

public class SplashForm : Form
{
    Form _Parent;
    BackgroundWorker worker;
    public SplashForm(Form parent)
    {
         InitializeComponent();
         BackgroundWorker worker = new BackgroundWorker();
         this.worker.DoWork += new System.ComponentModel.DoWorkEventHandler(this.worker _DoWork);
         backgroundWorker1.RunWorkerAsync();
         _Parent = parent;
    }
    private void worker _DoWork(object sender, DoWorkEventArgs e)
    {
         Thread.sleep(500);
         this.hide();
         _Parent.show();
    }     
}

At Main you should use that

   static class Program
        {
            [STAThread]
            static void Main()
            {
                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new SplashForm());
            }
        }

Answer 10

I ended up doing slightly different, since I was not happy with the other solutions. Basically I did not get them working as intended for some reason.

I did not want the splash to show for a fixed period of time, but rather as long as the MainForm was loading, and load time vary depending on how fast the connection toward the DB was.

In short my MainForm constructor spawn a thread that show my SplashForm , and on the event OnShown the splash thread is aborted. At first this did not work, and the SplashForm would at some times hang (hidden), and when closing the MainForm it would wait on the splash thread to exit. The solution was to catch the ThreadAbortException and call Dispose on the form.

Example code

private readonly Thread _splashThread = null;

public MainForm() {
    InitializeComponent();
    _splashThread = new Thread(new ThreadStart(DoSplash));
    _splashThread.Start();
}

private void DoSplash()
{
    var splashForm = new SplashForm();
    try
    {
        splashForm.ShowDialog();
    }
    catch (ThreadAbortException)
    {
        splashForm.Dispose();
    }
}

protected override void OnShown(EventArgs e)
{
    if (_splashThread != null && _splashThread.IsAlive)
    {
       _splashThread.Abort();
    }
    base.OnShown(e);
}

Answer 11

Here is the easiest way of creating a splash screen:

First of all, add the following line of code before the namespace in Form1.cs code:

using System.Threading;

Now, follow the following steps:

1. Add a new form in you application

2. Name this new form as FormSplashScreen

3. In the BackgroundImage property, choose an image from one of your folders

4. Add a progressBar

5. In the Dock property, set it as Bottom

6. In MarksAnimationSpeed property, set as 50

7. In your main form, named as Form1.cs by default, create the following method:

    private void StartSplashScreen() { Application.Run(new Forms.FormSplashScreen()); }

8. In the constructor method of Form1.cs, add the following code:

    public Form1() { Thread t = new Thread(new ThreadStart(StartSplashScreen)); t.Start(); Thread.Sleep(5000); InitializeComponent();//This code is automatically generated by Visual Studio t.Abort(); }

9. Now, just run the application, it is going to work perfectly.

Answer 12

None of the other answers gave me exactly what I was looking for. Read on for my solution to the problem.

I want a splash screen to fade in from 0% opacity to 100% opacity while things boot up, with a minimum display time of 2000ms (to allow the full fade in effect to show). Once everything is ready, I want the splash screen to display for a further 500ms while the main screen displays behind the splash screen. Then I want the splash screen to go away, leaving the main screen running.

Note that I use the MVP pattern for winforms. If you don't use MVP, you will need to simplify the below example a little.

Long story short, you need to create an AppContext class that inherits from ApplicationContext . I have put this in my Program.cs as below:

static class Program
{
    /// <summary>
    ///  The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main()
    {
        Application.SetHighDpiMode(HighDpiMode.SystemAware);
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new AppContext());
    }
}

public class AppContext : ApplicationContext
{
    private IMainPresenter _mainPresenter;
    private bool _ready;

    public AppContext()
    {
        _ready = false;

        using (ISplashPresenter splashPresenter = new SplashPresenter(new SplashView()))
        {
            Stopwatch sw = Stopwatch.StartNew();

            _mainPresenter = new MainPresenter(new MainView());
            _mainPresenter.Closed += MainPresenter_Closed;

            new Thread(() =>
                {
                    // !!! Do work here !!!

                    if (sw.ElapsedMilliseconds < 2000)
                        Thread.Sleep(2000 - (int)sw.ElapsedMilliseconds);

                    _ready = true;
                })
                .Start();

            while (!_ready)
            {
                Application.DoEvents();
                Thread.Sleep(1);
            }

            _mainPresenter.Show();

            _ready = false;

            new Thread(() =>
                {
                    Thread.Sleep(500);

                    _ready = true;
                })
                .Start();

            while (!_ready)
            {
                Application.DoEvents();
                Thread.Sleep(1);
            }
        }
    }

    private void MainPresenter_Closed(object sender, EventArgs e)
    {
        ExitThread();
    }
}

There are several implementation specific details that I haven't gone into here, such as ISplashPresenter implementing IDisposable and exactly how the fade in is managed; if enough people request it I will edit this answer to include a complete example.

Answer 13

Try this code

public partial class ssplashscreen : Form
    {
        public ssplashscreen()
        {                
            InitializeComponent();    
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            progressBar1.Increment(1);
            if (progressBar1.Value == 100)
            {
                timer1.Stop();
                this.Hide();
                Form frm = new login();
                frm.Show();
            }
        }
    }

Answer 14

Try This:

namespace SplashScreen
{
    public partial class frmSplashScreen : Form
    {
        public frmSplashScreen()
        {
            InitializeComponent();
        }

        public int LeftTime { get; set; }

        private void frmSplashScreen_Load(object sender, EventArgs e)
        {
            LeftTime = 20;
            timer1.Start();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (LeftTime > 0)
            {
                LeftTime--;
            }
            else
            {
                timer1.Stop();
                new frmHomeScreen().Show();
                this.Hide();
            }
        }
    }
}