private void enableGroupToolStripMenuItem_Click(object sender, EventArgs e) { List <UserGroup> groups = GetSelectedModifiableGroups(); if (groups.Count > 0) { bool multi_enable = groups.Count > 1; bool all_enabled = AllGroupsEnabled(groups); foreach (UserGroup group in groups) { try { if (group != null) { _token.EnableGroup(group, !all_enabled); } } catch (Win32Exception ex) { if (!multi_enable) { MessageBox.Show(this, ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } UpdateGroupList(); } else { MessageBox.Show(this, "No Modifable Groups Selected", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }