winform 单例模式 单线程例子

WinForm 单例

public static ChatForm newForm = null;public static ChatForm GetInstance()        {            if (newForm == null || newForm.IsDisposed == true)//newForm.IsDisposed == true必需，否则会出现“访问已释放资源”的异常            {                newForm = new ChatForm();            }            else            {                newForm.Activate();            }            return newForm;        }//调用：ChatForm newForm = ChatForm.GetInstance();newForm.Ipcon = Ip;newForm.Show();

单线程

         static void Main()        {            //DevExpress.UserSkins.OfficeSkins.Register();            //DevExpress.UserSkins.BonusSkins.Register();              DevExpress.XtraEditors.Controls.Localizer.Active = new DevExpress.LocalizationCHS.DevExpressXtraEditorsLocalizationCHS();            DevExpress.XtraGrid.Localization.GridLocalizer.Active = new DevExpress.LocalizationCHS.DevExpressXtraGridLocalizationCHS();            DevExpress.XtraPrinting.Localization.PreviewLocalizer.Active = new DevExpress.LocalizationCHS.DevExpressXtraPrintingLocalizationCHS();            DevExpress.Skins.SkinManager.EnableFormSkins();            Application.EnableVisualStyles();            Application.SetCompatibleTextRenderingDefault(false);            string proc = Process.GetCurrentProcess().ProcessName;            Process[] processes = Process.GetProcessesByName(proc);            if (processes.Length > 1)            {                MessageBox.Show("程序已经运行！","操作提示");            }            else            {                Application.Run(new MainForm());            }        }

 

转载于:https://www.cnblogs.com/deepwishly/archive/2010/07/23/2551222.html