private void CheckWindowsVersion() { int WindowsBuildNumber = WindowsUtil.getWindowsBuildNumber(); if (WindowsBuildNumber < 7600) { MessageBox.Show("Minimum windows version - 7", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); Process.GetCurrentProcess().Kill(); } // check Win 7 or 8.1 if (WindowsBuildNumber < 10000) { tabPageUtilites.Enabled = false; tabPageSettings.Enabled = false; btnDestroyWindowsSpying.Visible = false; btnDestroyWindows78Spy.Visible = true; } //------------------------------------------ }