SplashScreen，就是平时我们说的溅射屏幕，任何一个做过客户端程序的coder应该对它都不陌生，因为它能提升用户体验，让软件看上去更美。SplashScreenForm通常进入程序时是打开，主窗体加载完毕后退出。一般来说，SplashScreenForm比较简洁，窗体的内容只是显示程序主题、版权等信息；复杂些的，可以显示主程序的加载项目情况。
下面是我实现的一个SplashScreen类：
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Reflection;
namespace SplashScreen
{
public class SplashScreen
{
private static object _obj = new object();
private static Form _SplashForm = null;
private static Thread _SplashThread = null;
private delegate void ChangeFormTextdelegate(string s);
public static void Show(Type splashFormType)
{
if (_SplashThread != null)
return;
if (splashFormType == null)
{
throw (new Exception());
}
_SplashThread = new Thread(new ThreadStart(delegate()
{
CreateInstance(splashFormType);
Application.Run(_SplashForm);
}));
_SplashThread.IsBackground = true;
_SplashThread.SetApartmentState(ApartmentState.STA);
_SplashThread.Start();
}
public static void ChangeTitle(string status)
{
ChangeFormTextdelegate de = new ChangeFormTextdelegate(ChangeText);
_SplashForm.Invoke(de, status);
}
public static void Close()
{
if (_SplashThread == null || _SplashForm == null) return;
try
{
_SplashForm.Invoke(new MethodInvoker(_SplashForm.Close));
}
catch (Exception)
{
}
_SplashThread = null;
_SplashForm = null;
}
private static void ChangeText(string title)
{
_SplashForm.Text = title.ToString();
}
private static void CreateInstance(Type FormType)
{
if (_SplashForm == null)
{
lock (_obj)
{
object obj = FormType.InvokeMember(null,
BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.CreateInstance, null, null, null);
_SplashForm = obj as Form;
_SplashForm.TopMost = true;
_SplashForm.ShowInTaskbar = false;
_SplashForm.BringToFront();
_SplashForm.StartPosition = FormStartPosition.CenterScreen;
if (_SplashForm == null)
{
throw (new Exception());
}
}
}
}
}
}
调用的时候只需要传入你需要作为溅射屏幕的窗体，然后在主窗体加载完毕后调用close方法：
namespace SplashScreen
{
public partial class MainForm : Form
{
public MainForm()
{
SplashScreen.Show(typeof(SplashForm));
InitializeComponent();
Thread.Sleep(1000);
SplashScreen.ChangeTitle("111");
Thread.Sleep(1000);
SplashScreen.ChangeTitle("222");
Thread.Sleep(1000);
SplashScreen.ChangeTitle("333");
Thread.Sleep(1000);
SplashScreen.ChangeTitle("444");
SplashScreen.Close();
}
}
}