原文如下：
本代码可以依据主程序加载进度来显示Splash。
static class Program
{
/// <summary>
/// 主程序的入口点在此设置，包括一些初始化操作，启动窗体等
/// </summary>
private static ApplicationContext context;
[STAThread]
static void Main()
{
Application.EnableVisualStyles(); //样式设置
Application.SetCompatibleTextRenderingDefault(false); //样式设置
Splash sp = new Splash(); //启动窗体
sp.Show(); //显示启动窗体
context = new ApplicationContext();
context.Tag = sp;
Application.Idle += new EventHandler(Application_Idle); //注册程序运行空闲去执行主程序窗体相应初始化代码
Application.Run(context);
}
//初始化等待处理函数
private static void Application_Idle(object sender, EventArgs e)
{
Application.Idle -= new EventHandler(Application_Idle);
if (context.MainForm == null)
{
Main mw = new Main();
context.MainForm =mw;
mw.init(); //主窗体要做的初始化事情在这里，该方法在主窗体里应该申明为public
Splash sp = (Splash)context.Tag;
sp.Close(); //关闭启动窗体
mw.Show(); //启动主程序窗体
}
}
}
Splash窗体的相关属性设置：
BackgroundImage:载入你想作为启动画面的图片；
ControlBox:False;
FormBorderStyle:None;
ShowInTaskbar:False;
StartPositon:CenterScreen.
[转]
http://www.lordong.cn/blog/post/18.html
当程序在启动过程中需要花一些时间去加载资源时，我们希望程序能显示一个欢迎界面，能简单介绍软件功能的同时还能告知用户该程序还在加载中，使得用户体验更友好。
实现如下：
1. 添加欢迎界面的窗体(比如SlpashForm)，做以下调整：
将FormBorderStyle属性设成None，即没有窗体边框
将StartPosition属性设成CenterScreen，即总是居中
将TopMost属性设成True，即总是在顶部
将UseWaitCursor属性设成Ture，即显示等待光标，让人感觉后台还在运行
增加一个PictureBox控件，与欢迎图片大小一致，窗体的大小也设成一致
增加一个ProgressBar控件，将Style设成Marquee，将MarqueeAnimationSpeed设成50
2. 主界面的构造函数改成以下代码：
// Create thread to show splash window
Thread showSplashThread = new Thread(new ThreadStart(ShowSplash));
showSplashThread.Start();
// Time consumed here
InitializeFrame(); // 把原来构造函数中的所有代码移到该函数中
// Abort show splash thread
showSplashThread.Abort();
showSplashThread.Join(); // Wait until the thread aborted
showSplashThread = null;
3. 显示SplashForm的线程函数
///
/// Thread to show the splash.
///
private void ShowSplash()
{
SplashForm sForm = null;
try
{
sForm = new SplashForm();
sForm.ShowDialog();
}
catch (ThreadAbortException e)
{
// Thread was aborted normally
if (_log.IsDebugEnabled)
{
_log.Debug("Splash window was aborted normally: " + e.Message);
}
}
finally
{
sForm = null;
}
}
4. 在主窗体的Load事件加激活自己的代码
SetForegroundWindow(Process.GetCurrentProcess().MainWindowHandle);
在使用SetForegroundWindow之前先声明一下
// Uses to active the exist window
[DllImport("User32.dll")]
public static extern void SetForegroundWindow(IntPtr hwnd);
下面是部分代码：
AppStart 类，包含Main方法
public class AppStart
{
public AppStart()
{
} [STAThread] static void Main(string[] args) { // 显示Splash窗体 Splash.Show(); DoStartup(args); // 关闭Splash窗体 Splash.Close(); } static void DoStartup(string[] args) { // 做需要的事情 frmMain f = new frmMain(); Application.Run(f); }
}Splash功能类：
public class Splash{ static frmSplash MySplashForm = null; static Thread MySplashThread = null; static void ShowThread() { MySplashForm = new frmSplash(); Application.Run(MySplashForm); } static public void Show() { if (MySplashThread != null) return; MySplashThread = new Thread(new ThreadStart(Splash.ShowThread)); MySplashThread.IsBackground = true; MySplashThread.ApartmentState = ApartmentState.STA; MySplashThread.Start(); } static public void Close() { if (MySplashThread == null) return; if (MySplashForm == null) return; try { MySplashForm.Invoke(new MethodInvoker(MySplashForm.Close)); } catch (Exception) { } MySplashThread = null; MySplashForm = null; } static public string Status { set { if (MySplashForm == null) { return; } MySplashForm.StatusInfo = value; } get { if (MySplashForm == null) { throw new InvalidOperationException("Splash Form not on screen"); } return MySplashForm.StatusInfo; } }}Splash 界面类：
public class frmSplash : System.Windows.Forms.Form{ private string _StatusInfo = ""; public frmSplash() { InitializeComponent(); } private void InitializeComponent() { // 
this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image"))); // } public string StatusInfo { set { _StatusInfo = value; ChangeStatusText(); } get { return _StatusInfo; } } public void ChangeStatusText() { try { if (this.InvokeRequired) { this.Invoke(new MethodInvoker(this.ChangeStatusText)); return; } labStatus.Text = _StatusInfo; } catch (Exception e) { // 异常处理 } }}
主界面类：
public class frmMain : System.Windows.Forms.Form{ public frmMain() { InitializeComponent(); Splash.Status = "状态:载入初始化模块"; System.Threading.Thread.Sleep(1000); Splash.Status = "状态:载入管理模块"; System.Threading.Thread.Sleep(1000); Splash.Status = "状态:载入打印模块"; System.Threading.Thread.Sleep(1000); Splash.Status = "状态:载入插件模块"; System.Threading.Thread.Sleep(1000); Splash.Status = "状态:连接数据库"; System.Threading.Thread.Sleep(1000); Splash.Close(); }}