[تنبيه - عنوان غير مناسب : ]مشكله مع ال database

السلام عليكم ورحمه الله وبركاته

عندي مشكله بسيطه

عند تنفيذ هذا الامر

 OleDbCommand commend = new OleDbCommand("Select [Component-ID] From Compnent where [Process-Name]="+"'"+ MainForm.tabname+"'");
			  //commend.Connection.ConnectionString.ToString();
			  try
			  {
				  string myconn = this.componentTableAdapter1.Connection.ConnectionString.ToString();
				  OleDbConnection myconnection = new OleDbConnection(myconn);

				  myconnection.Open();
				  OleDbDataReader reder = commend.ExecuteReader();
				  while (reder.Read())
				  {
					  int id = (int)reder["component-ID"];
					  co.UpdateComponent(id, adv.componentname, adv.exDate, adv.MainPriod, adv.LastMintanceData
					  , MainForm.tabname);
				  }
			  }
			  catch (OleDBException e)
			  {
				  MessageBox.Show(e.ToString());
			  }
			  finally
			  {
				  this.componentTableAdapter1.Connection.Close();
			  }

بيطلع error

InvalidOperationException

connection property isnot initialized

فهل حد عنده علم