winform 关于Messagebox自动定时关闭
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using System; using System.Collections.Generic; using System.Linq; using System.Runtime.InteropServices; using System.Text; using System.Windows.Forms; namespace WindowsFormsApplication2 { public class MessageBoxTimeOut { private string _caption; public void Show(string text, string caption) { Show(3000, text, caption); } public void Show(int timeout, string text, string caption) { Show(timeout, text, caption, MessageBoxButtons.OK, MessageBoxIcon.Information); } public void Show(int timeout, string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon) { this._caption = caption; StartTimer(timeout); MessageBox.Show(text, caption, buttons, icon); } private void StartTimer(int interval) { Timer timer = new Timer(); timer.Interval = interval; timer.Tick += new EventHandler(Timer_Tick); timer.Enabled = true; } private void Timer_Tick(object sender, EventArgs e) { KillMessageBox(); //停止计时器 ((Timer)sender).Enabled = false; } [DllImport("User32.dll", EntryPoint = "FindWindow", CharSet = CharSet.Auto)] private extern static IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("User32.dll", CharSet = CharSet.Auto)] public static extern int PostMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam); public const int WM_CLOSE = 0x10; private void KillMessageBox() { //查找MessageBox的弹出窗口,注意对应标题 IntPtr ptr = FindWindow(null, this._caption); if (ptr != IntPtr.Zero) { //查找到窗口则关闭 PostMessage(ptr, WM_CLOSE, IntPtr.Zero, IntPtr.Zero); } } } }
调用:
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MessageBoxTimeOut mb = new MessageBoxTimeOut(); mb.Show("产品编码不存在!", "提示(窗体3秒后自动关闭...)");
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