c#制作简单启动画面的方法

/// <summary> 
/// 启动画面 
/// </summary> 
public partial class SplashScreen : Form 
{ 
 /// <summary> 
 /// 启动画面本身 
 /// </summary> 
 static SplashScreen instance; 
 /// <summary> 
 /// 显示的图片 
 /// </summary> 
 Bitmap bitmap; 
 public static SplashScreen Instance 
 { 
  get 
  { 
   return instance; 
  } 
  set 
  { 
   instance = value; 
  } 
 } 
 public SplashScreen() 
 { 
  InitializeComponent(); 
  // 设置窗体的类型 
  const string showInfo = "启动画面：我们正在努力的加载程序，请稍后...";
  FormBorderStyle = FormBorderStyle.None; 
  StartPosition = FormStartPosition.CenterScreen; 
  ShowInTaskbar = false; 
  bitmap = new Bitmap(Properties.Resources.SplashScreen); 
  ClientSize = bitmap.Size; 
  using (Font font = new Font("Consoles", 10)) 
  { 
   using (Graphics g = Graphics.FromImage(bitmap))
   { 
    g.DrawString(showInfo, font, Brushes.White, 130, 100);
   } 
  } 
  BackgroundImage = bitmap; 
 } 
 protected override void Dispose(bool disposing)
 {
  if (disposing && (components != null)) 
  { 
   if (bitmap != null) 
   { 
    bitmap.Dispose(); 
    bitmap = null; 
   } 
   components.Dispose(); 
  } 
  base.Dispose(disposing); 
 } 
 public static void ShowSplashScreen()
 { 
  instance = new SplashScreen();
  instance.Show(); 
 } 
}

static class Program 
{ 
 /// <summary> 
 /// 应用程序的主入口点。 
 /// </summary> 
 [STAThread] 
 static void Main() 
 { 
  Application.EnableVisualStyles(); 
  Application.SetCompatibleTextRenderingDefault(false);
  // 启动 
  SplashScreen.ShowSplashScreen(); 
  // 进行自己的操作：加载组件，加载文件等等 
  // 示例代码为休眠一会 
  System.Threading.Thread.Sleep(3000); 
  // 关闭 
  if (SplashScreen.Instance != null) 
  { 
   SplashScreen.Instance.BeginInvoke(new MethodInvoker(SplashScreen.Instance.Dispose));
   SplashScreen.Instance = null; 
  } 
  Application.Run(new FormMain()); 
 } 
}