简单问题,麻烦一下

Question

下面代码是写入数据库记录,
    
public void Insert(string DepID, string DepName, string DepMemo)
        {
            IDbConnection db = null;
            IDbTransaction mTransaction = null;
            try
            {
                db = DataAccess.Connection.CreateConnection();
                mTransaction = db.BeginTransaction(IsolationLevel.ReadCommitted);
                IDbCommand mCommand = db.CreateCommand();
                mCommand.CommandText = "insert into department(dep_id,dep_name,dep_memo) values(@dep_id,@dep_name,@dep_memo)";
                IDbDataParameter mParam;
                mCommand.Parameters.Clear();
                mParam = mCommand.CreateParameter();
                mParam.ParameterName = "@dep_id";
                mParam.Value = DepID;
                mCommand.Parameters.Add(mParam);                mParam = mCommand.CreateParameter();
                mParam.ParameterName = "@dep_name";
                mParam.Value = DepName;
                mCommand.Parameters.Add(mParam);                mParam = mCommand.CreateParameter();
                mParam.ParameterName = "@dep_memo";
                mParam.Value = DepMemo;
                mCommand.Parameters.Add(mParam);
                mCommand.ExecuteNonQuery();
                mTransaction.Commit();
            }
            catch(Exception e)
            {
                if (mTransaction != null)
                    mTransaction.Rollback();
                throw(e);
            }
            finally
            {
                if (db != null)
                    db.Close();
            }
        } 这个怎么执行的时候提示错误了 
提示TRANSACTION属性尚未初始化?

Answer 1

mCommand.ExecuteNonQuery();这行报错