C# Reflection PropertyInfo
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;
using System.Reflection;
namespace PropertyInfo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
protected object AssembleObject(Type type, System.Data.IDataReader reader)
{
object o = Activator.CreateInstance(type);
if (o == null)
return null;
System.Reflection.PropertyInfo[] properties = type.GetProperties();//声明一个获取类型属性的变量
for (int i = 0; i <reader.FieldCount; i++)
{
System.Reflection.PropertyInfo property = type.GetProperty(reader.GetName(i));//得到第i列的所有属性
object val = reader[i];//第i列
if (val != DBNull.Value && property != null && property.CanWrite)//判断对象是否为空，属性是否为空，属性是否可写！如果都为true
property.SetValue(o, reader[i], null);//o对象，reader[i]对象的新值，索引器空的
}
return o;
}
public class User
{
private int _Id;
public int Id
{
get { return _Id; }
set { _Id = value; }
}
private string _Name;
public string Name
{
get { return _Name; }
set { _Name = value; }
}
private int _Sex;
public int Sex
{
get { return _Sex; }
set { _Sex = value; }
}
private string _SId;
public string SId
{
get { return _SId; }
set { _SId = value; }
}
private string _Pwd;
public string Pwd
{
get { return _Pwd; }
set { _Pwd = value; }
}
}
private void button1_Click(object sender, EventArgs e)
{
DataTable dt = new DataTable();
using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|db2.mdb;Persist Security Info=True"))
{
string sql = @"select * from User";
conn.Open();
OleDbCommand cmd = new OleDbCommand("select * from db2.User", conn);
OleDbDataAdapter da = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds, "dt");
dt = ds.Tables[0];
OleDbDataReader dr = cmd.ExecuteReader();
User u=new User();
while (dr.Read())
{
u = (User)AssembleObject(typeof(User), dr);
}
}
}
}
}