PropertyInfo 简单用法

• 一般用于两个类的数据绑定
• 如下

  String DefaultDBConnection = "Data Source=111.111.0.111;Initial Catalog=ZMT;User ID=name;Password=pwd";//连接字符串
              DataSet ds = new DataSet();
              using (SqlConnection conn = new SqlConnection(DefaultDBConnection))//开启数据库连接
              {
                  SqlTransaction trans = null;
                  string orgCode = "1=1";
                  string SQL = string.Format(@"select * from instockplan where ISPID=559
                                              select * from InStockPlanDetails where ISPID=559 and @test");
                  conn.Open();
                  trans = conn.BeginTransaction();//打开一个事物
                  SqlCommand cmd = new SqlCommand(SQL, conn);
                  cmd.Parameters.AddWithValue("@test", orgCode);
                  cmd.Transaction = trans;//此次操作绑定当前的事物
                  SqlDataAdapter Da = new SqlDataAdapter(cmd);
                  Da.Fill(ds);//把查询的数据存在ds
                  //var i = 0;
                  //foreach (var item in ds.Tables[0].Rows)
                  //{
                  //    Console.WriteLine(i++);
                  //}
                  trans.Commit();//事物提交
                  conn.Close();//关闭数据库连接
              }
              List<Plan> list = new List<Plan>();
              foreach (DataRow item in ds.Tables[0].Rows)
              {
                  Plan plan = new Plan();
                  Type planAttr = typeof(Plan); //获取当前类属性
                  System.Reflection.PropertyInfo[] planAttrs = planAttr.GetProperties();//获取当前这个类的所有属性
                  foreach (PropertyInfo attr in planAttrs)
                  {
                      if (ds.Tables[0].Columns.Contains(attr.Name))
                          attr.SetValue(plan, item[attr.Name].ToString(), null);//给当前plan对象赋值该字段
                      if (attr.Name == "planDetails"&& ds.Tables[1].Rows.Count>0)//如果子类里边有数据的时候才进去
                      {
                          foreach (DataRow Pitem in ds.Tables[1].Rows)
                          {
                              PlanDetails planD = new PlanDetails();
                              Type planDAttr = typeof(PlanDetails);
                              System.Reflection.PropertyInfo[] planDAttrs = planDAttr.GetProperties();
                              foreach (var attrD in planDAttrs)
                              {
                                  if (ds.Tables[1].Columns.Contains(attrD.Name))
                                      attrD.SetValue(planD, Pitem[attrD.Name].ToString(), null);
                              }
                              plan.planDetails.Add(planD);
                          }
                          
                      }
                  }
                  list.Add(plan);
              }
              foreach (var item in list)
              {
                  Console.WriteLine(item.ISPID);
              }

• 测试类

  public class Plan
      {
          public Plan()
          {
              planDetails = new List<PlanDetails>();
          }
          public string ISPCode { get; set; }
  
          public string ISPStatus { get; set; }
  
          public string ISPID { get; set; }
          
          public List<PlanDetails> planDetails { get; set; }
      }
      public class PlanDetails
      {
          public string ISPDID { get; set; }
  
          public string ISPID { get; set; }
  
          public string SKUNo { get; set; }
      }