void LVersion_ToRefresh(object sender, EventArgs e) { if (lversion != null) { main_tabControl.TabPages.Remove(lversiontab); lversion = null; } }
private void Lversion_menu_Click(object sender, EventArgs e) { if (lversion == null) { lversion = new LVersion(); lversiontab = new TabPage("VERSION"); main_tabControl.TabPages.Add(lversiontab); lversiontab.Controls.Add(lversion); lversion.Dock = DockStyle.Fill; lversion.Show(); lversion.BringToFront(); } main_tabControl.SelectTab(lversiontab); }