VS 数据绑定问题

Question

   [System.Diagnostics.DebuggerNonUserCodeAttribute()]
        [System.ComponentModel.Design.HelpKeywordAttribute("vs.data.TableAdapter")]
        [System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Delete, false)]
        public virtual int DeleteQuery(int 编号) {
            System.Data.OleDb.OleDbCommand command = this.CommandCollection[1];
            command.Parameters[0].Value = ((int)(编号));
            System.Data.ConnectionState previousConnectionState = command.Connection.State;
            if (((command.Connection.State & System.Data.ConnectionState.Open) 
                        != System.Data.ConnectionState.Open)) {
                               
                command.Connection.Open();
                s = command.Connection.State.ToString();  
            }
            int returnValue; 
            try {        
                returnValue = command.ExecuteNonQuery();
            }
            finally {
                if ((previousConnectionState == System.Data.ConnectionState.Closed)) {
                    command.Connection.Close();
                }
            }
            return returnValue;
        }         private void button1_Click(object sender, EventArgs e)
        {
            WindowsApplication1.db1DataSetTableAdapters.表1TableAdapter adapter = new   WindowsApplication1.db1DataSetTableAdapters.表1TableAdapter();
            WindowsApplication1.db1DataSet date=new  WindowsApplication1.db1DataSet();
            adapter.DeleteQuery(1);            
        }执行了 adapter.DeleteQuery(1);  并没有把数据库中编号=1的行删除，这是为什么？

Answer 1

[System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Delete, true)]
   public bool DeleteT(int ID)
   {
        int rowsAffected = Adapter.Delete(ID);
        return rowsAffected == 1;
   }