文件写入补充（序列化对象写入）
student类必须标记序列化
using System;
using System.Collections.Generic;
using System.Text;
namespace TextFile
{
[Serializable]
class Student
{
public string Name { get; set; }
public string Gender { get; set; }
public int Age { get; set; }
public DateTime Birthday { get; set; }
}
}
主程序代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
//引入命名空间
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
namespace TextFile
{
public partial class FrmFile : Form
{
public FrmFile()
{
InitializeComponent();
}
private void btnSave_Click(object sender, EventArgs e)
{
//封装对象信息
Student objStu = new Student()
{
Name = this.txtName.Text.Trim(),
Age = Convert.ToInt16(this.txtAge.Text.Trim()),
Gender = this.txtGender.Text.Trim(),
Birthday = Convert.ToDateTime(this.txtBirthday.Text.Trim())
};
//保存到文本文件
FileStream fs = new FileStream("C:\objStu.obj", FileMode.Create);
StreamWriter sw = new StreamWriter(fs);
//一行一行写入文本
sw.WriteLine(objStu.Name);
sw.WriteLine(objStu.Age);
sw.WriteLine(objStu.Gender);
sw.WriteLine(objStu.Birthday.ToShortDateString());
//关闭文件流和写入器
sw.Close();
fs.Close();
}
private void btnRead_Click(object sender, EventArgs e)
{
FileStream fs = new FileStream("C:\objStu.obj", FileMode.Open);
StreamReader sr = new StreamReader(fs);
//一行一行读取
Student objStu = new Student()
{
Name = sr.ReadLine(),
Age = Convert.ToInt16(sr.ReadLine()),
Gender = sr.ReadLine(),
Birthday = Convert.ToDateTime(sr.ReadLine())
};
sr.Close();
fs.Close();
this.txtName.Text = objStu.Name;
this.txtAge.Text = objStu.Age.ToString();
this.txtGender.Text = objStu.Gender;
this.txtBirthday.Text = objStu.Birthday.ToShortDateString();
}
private void btnSerialize_Click(object sender, EventArgs e)
{
//封装对象信息
Student objStu = new Student()
{
Name = this.txtName.Text.Trim(),
Age = Convert.ToInt16(this.txtAge.Text.Trim()),
Gender = this.txtGender.Text.Trim(),
Birthday = Convert.ToDateTime(this.txtBirthday.Text.Trim())
};
//【1】创建文件流
FileStream fs = new FileStream("C:\objStu.obj", FileMode.Create);
//【2】创建二进制格式化器
BinaryFormatter formatter = new BinaryFormatter();
//【3】调用序列化方法
formatter.Serialize(fs, objStu);
//【4】关闭文件流
fs.Close();
}
private void btnDeserialize_Click(object sender, EventArgs e)
{
//【1】创建文件流
FileStream fs = new FileStream("C:\objStu.obj", FileMode.Open);
//【2】创建二进制格式化器
BinaryFormatter formatter = new BinaryFormatter();
//【3】调用序列化方法
Student objStu = (Student)formatter.Deserialize(fs);
//【4】关闭文件流
fs.Close();
//显示对象属性
this.txtName.Text = objStu.Name;
this.txtAge.Text = objStu.Age.ToString();
this.txtGender.Text = objStu.Gender;
this.txtBirthday.Text = objStu.Birthday.ToShortDateString();
}
}
}