/// <summary> /// 用户注册 /// 0:成功注册 /// 1:用户已存在 /// </summary> /// <param name="name"></param> /// <param name="password"></param> /// <param name="customersex"></param> /// <param name="securityquestion"></param> /// <param name="securityquestionanswer"></param> /// <returns></returns> public int Register() { SqlConnection sql = DataBaseOperations.CreateConnection(); //建立数据库连接 string cmdText = "select * from Users where Name='" + Name + "'"; SqlDataReader sqlDataReader = DataBaseOperations.GetSqlDataReader(cmdText, sql); //查询数据库中是否有该用户 if (sqlDataReader.HasRows) //搜索结果中有数据,说明已经注册 { sqlDataReader.Close(); //关闭sqlDataReader(必要操作!!) sql.Close(); //关闭sql连接 return(1); //用户名已经存在,返回1,共前台使用 } //将用户信息写入数据库 else { sqlDataReader.Close();//关闭sqlDataReader(必要操作!!) //将用户信息写入User表 cmdText = "insert into Users (Name,Password,Power,LegalityState) values ('" + Name + "','" + Password + "','" + Powers + "','" + legalityState + "')"; DataBaseOperations.ReviseDataToDataBase(cmdText, sql); //将用户信息写入Customer表 cmdText = "insert into Customer (Name,Password,CustomerSex,SecurityQuestion,SecurityQuestionAnswer,LegalityState) values('" + Name + "','" + Password + "','" + customerSex + "','" + securityQuestion + "','" + securityQuestionAnswer + "','" + legalityState + "')"; DataBaseOperations.ReviseDataToDataBase(cmdText, sql); //执行插入操作 sql.Close(); //关闭sql连接 return(0); //操作成功返回0,供前台使用 } }
/// <summary> /// 用户登录 /// </summary> /// <returns>0:用户密码正确,账号未被冻结,并且提取相应的权限值</returns> /// <returns>1:用户密码错误</returns> /// <returns>2:用户尚未注册</returns> /// <returns>3:账号被冻结</returns> public int Login() { SqlConnection sql = DataBaseOperations.CreateConnection(); string cmdText = "select * from Users where Name='" + Name + "'"; SqlDataReader sqlDataReader = DataBaseOperations.GetSqlDataReader(cmdText, sql); //如果查询到该用户,匹配用户名/密码 if (sqlDataReader.HasRows) //根据查询结果里面的行数判断是否有该用户 { sqlDataReader.Close(); //关闭sqlDataReader,必要操作 SqlDataAdapter sqlDataAdapter = DataBaseOperations.GetSqlDataAdapter(cmdText, sql); DataSet dataSet = DataBaseOperations.GetDataSet(sqlDataAdapter); //对用户密码进行匹配 if (dataSet.Tables[0].Rows[0]["Password"].ToString() == Password) { string power = dataSet.Tables[0].Rows[0]["Power"].ToString();//获取数据库中用户权限(string) //将string权限转换为Power类型 switch (power) { case "Customer": Powers = Power.Customer; break; case "Manager": Powers = Power.Manager; break; } if (Convert.ToInt32(dataSet.Tables[0].Rows[0]["LegalityState"]) == 0) { sql.Close(); //关闭sql连接 return(0); //用户密码正确,账号未被冻结,提示前台进行相应的操作 } else { sql.Close(); //关闭sql连接 return(3); //账号被冻结,提示前台进行相应的操作 } } else { sql.Close(); //关闭sql连接 return(1); //用户密码错误,提示前台进行相应的操作 } } sql.Close(); //关闭sql连接 return(2); //用户名不存在,提示用户注册 }