DesktopHelper.UI.ConfigForm.GetInstance C# (CSharp) Method

        public static ConfigForm GetInstance()
        {
            if (form_Config == null)
            {
                lock (synLock)
                {
                    if (form_Config == null) form_Config = new ConfigForm();
                }
            }
            return form_Config;
        }

 //设置
 private void ConfigMenuItem_Click(object sender, EventArgs e)
 {
     try
     {
         configForm = ConfigForm.GetInstance();
         configForm.ReloadConfigHandlor += new ConfigForm.ReloadConfigHandler(ReloadNavigation);
         configForm.Show();
         configForm.Activate();
     }
     catch
     { }
 }