【机房重构】---注册
【前言】：以蜗牛的速度终于敲完登录这一条线了，终于思路通了一些，但是当自己再敲注册时，又有点卡壳了，我是将原来的学生表分成两个表--学生表和卡表，但是传参数时又不知道咋传了，通过跟小伙伴们交流和自己上网的搜索，终于有了一些思路，然后自己独立完成的第一条线，还是比较有成就感的呢，嘿嘿！
【内容】：
第一步：进行实体层的封装，将数据库表中的内容，写入实体，方便各层的调用，代码很简单，这里就不赘述了！
第二步；创建接口方法，方便D层的实现接口
using LoginEntity;
namespace IDAL
{
public interface IRegister
{
DataTable Registercard(LoginEntity.Card card, LoginEntity.Student student);
}
}第三步：D层实现接口，然后D层会调用sqlHlper，代码如下：
using System.Data; //引入数据
using System.Data.SqlClient;
using LoginEntity;
using IDAL; //声明接口
namespace DAL
{
public class SqlSeverRegisterDAL:IDAL.IRegister
{
public DataTable Registercard(LoginEntity.Card card, LoginEntity.Student student)
{
SqlParameter []sqlParameter={new SqlParameter ("@CardNo",card .CardNo ),
new SqlParameter ("@StudentNo",student .StudentNo ),
new SqlParameter ("@date",card .date ),
new SqlParameter ("@time",card.time ),
new SqlParameter ("@cash",card.cash),
new SqlParameter ("@status",card.status),
new SqlParameter ("@type",card .type ),
new SqlParameter ("@Ischeck",card.Ischeck),
new SqlParameter("@Explain",card.Explain),
new SqlParameter("@userID",card.UserID)};
string sql="Insert into Card_Info(CardNo,StudentNo,date,time,cash,status,type,Ischeck,UserID,Explain)values(@CardNo,@StudentNo,@date,@time,@cash,@status,@type,@Ischeck,@userID,@Explain)";
DataTable table = SQLHelper.SqlHelper.GetDataTable(sql, CommandType.Text, sqlParameter);
if (table.Rows .Count !=0 ) //判断返回的table表不为空
{
SqlParameter []parameter ={new SqlParameter ("@studentnoo",student .StudentNo ),
new SqlParameter ("@studentname",student .StudentName),
new SqlParameter ("@sex",student.Sex),
new SqlParameter ("@department",student .Department),
new SqlParameter ("@grade",student.Grade),
new SqlParameter ("@class",student .Class)};
string Asql = "Insert into [Student_Info](StudentNo,StudentName,Sex,Department,Grade,Class)valus(@studentno,@studentname,@sex,@department,@grade,@class)";
DataTable table1 = SQLHelper.SqlHelper.GetDataTable(Asql, CommandType.Text, parameter);
return table1;
}
return table;
}
}
}第四步，创建抽象工厂+反射
using System.Configuration;//引用配置文件
using System.Reflection;//引用反射
using IDAL;//引用接口
namespace Factory
{
public class RegisterFatory
{
public static readonly string AssemblyName = "DAL";
public static readonly string db = ConfigurationManager.AppSettings["DB"];//读取配置文件
public IRegister Createcard()
{
string className = AssemblyName + "." + db + "RegisterDAL";
return (IRegister)Assembly.Load(AssemblyName).CreateInstance(className);
}
}
}
using System.Data;
using System.Data.SqlClient;
using Factory;
using IDAL;
using LoginEntity;
using System.Windows.Forms; //显示Messagebox控件
namespace LoginBLL
{
public class RegisterBLL
{
//B层实现抽象工厂和接口的方法，然后在这里进行逻辑判读
public DataTable Registercard(Card card, Student student)
{
Factory.RegisterFatory factory = new Factory.RegisterFatory();
IDAL.IRegister Iregister = factory.Createcard();
DataTable userbacktable = Iregister.Registercard(card ,student );
return userbacktable;
第六步、外观层调用B层的方法，然后U层的数据传给B层，或者返还数据到U层
using LoginBLL;
using LoginEntity;
using System.Data;
namespace Facade
{
public class RegisterFacade
{
public DataTable Registercard(LoginEntity .Card card,LoginEntity .Student student)
{
//调用B层方法，然后将U层数据传入B层或者返回信息到U层
LoginBLL .RegisterBLL loginBll=new LoginBLL.RegisterBLL();
DataTable dt=loginBll .Registercard (card,student );
return dt ;
}
}
}第七步、U层接收用户输入的数据，并且把数据传给实体，然后通过外观层，进行参数的传递；
using System.Windows.Forms;
namespace LoginUI
{
public partial class RegisterUI : Form
{
public RegisterUI()
{
InitializeComponent();
}
private void btnSave_Click(object sender, EventArgs e)
{
//判读信息完整性
if (txtCardno.Text ==""|| txtStudentno.Text ==""||txtName .Text ==""||cmbSex.Text ==""||txtDepartment.Text ==""||txtClass.Text ==""||txtGrade.Text ==""||cmbStatus.Text ==""||cmbType .Text ==""||txtNotes .Text =="")
{
MessageBox.Show("请将信息补充完整");
}
else
{
LoginEntity.Card card = new LoginEntity.Card(); //实例化实体卡
LoginEntity.Student student = new LoginEntity.Student();//实例化学生表
//将U层从数据传入到实体，然后通过外观层进行传参;
card.CardNo = int.Parse (txtCardno.Text.Trim ()); //类型的强制转换
card.status = cmbStatus.Text;
card.type = cmbType.Text;
card.Ischeck = "未结账";
card.Explain = txtNotes.Text;
card.cash = txtCash.Text;
card.UserID = Form1.LoginTxtUserID.ToString();
string time = DateTime.Now.ToLongTimeString().ToString();
card.time = time;;
string date = DateTime.Now.ToLongDateString().ToString();
card.date = date;
student.StudentNo = txtStudentno.Text;
student.Grade = txtGrade.Text;
student.Department = txtDepartment.Text;
student.Class = txtClass.Text;
student.Sex = cmbSex.Text;
student.StudentName = txtName.Text;
Facade.RegisterFacade facade = new Facade.RegisterFacade(); //实例化外观层
DataTable reg = new DataTable();
reg = facade.Registercard(card ,student); //将实体中的参数传入外观层
}【总结】：
基本上思路是这样的，万事开头难，当自己真正着手去做，然后进行一些小挫折后，就会真正的明白，会发现其实都是套路呢。开头比较慢，相信自己慢慢就会飞起来的，嘿嘿！以上过程是小编的一些理解，如有疑议，欢迎沟通交流！