反射的学习笔记--sql语句生成

学生实体类

 public class Student
    {

        public int Id { get; set; }
        public string Name { get; set; }
        public int Age { get; set; }
        public string Address { get; set; }
        public string Tel { get; set; }
        public int GrateId { get; set; }
        public Grate grate { get; set; }

    }

年级实体类

1 public class Grate
2     {
3
4         public int Id { get; set; }
5         public string Name { get; set; }
6         public List<Student> Students { get; set; }
7     }

反射实现代码

 1  public class Entity<T>
 2     {
 3         public string GetSql(T en)
 4         {
 5             Type ty = en.GetType();
 6             PropertyInfo []pf = ty.GetProperties();
 7             StringBuilder sb = new StringBuilder();
 8             sb.Append("insert into "+ty.Name+" (");
 9             foreach (PropertyInfo item in pf)
10             {
11
12
13                 sb.Append(item.Name + ",");
14             }
15
16             sb.Remove(sb.Length - 1, 1);
17             sb.Append(") ");
18             sb.Append("values(");
19             foreach (PropertyInfo item in pf)
20             {
21
22
23                 sb.Append("@" + item.Name + ",");
24             }
25             sb.Remove(sb.Length - 1, 1);
26             sb.Append(")");
27             return sb.ToString(); ;
28         }
29
30
31
32     }

反射生成的sql 反射学习笔记