private void ShowDBTableEditor() { try { OpenDBToolsCommand cmd = new OpenDBToolsCommand(); cmd.Execute(); DBTableEditor frm = m_dbTableEditor; if (frm != null) { frm.Visible = true; frm.BringToFront(); return; } try { frm = new DBTableEditor(); frm.Show(); m_dbTableEditor = frm; } catch (Exception ex) { MessageBox.Show(ex.Message); } } catch (Exception ex) { MessageBox.Show(ex.Message, "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning); } }