C#入门保存对象到文件

因为要对文件做操作，所以首先还是要引入命名空间

1 //引入命名空间
2 using System.IO;

一、保存对象数据到文本文件中。

注意对象明确原则；

 1            //封装数据；
 2             Student objStudent = new Student()  //对象初始化器
 3             {
 4                 StudentName = this.txtStudentName.Text.Trim(),
 5                 Age = Convert.ToInt32(this.txtAge.Text.Trim()),
 6                 Birthday = Convert.ToDateTime(this.txtBirthday.Text.Trim()),
 7                 Gender = this.txtGender.Text.Trim()
 8             };
 9 
10             //保存到文件
11             FileStream fs = new FileStream("objStudent.obj", FileMode.Create);
12             StreamWriter sw = new StreamWriter(fs);
13             //逐行写入
14             sw.WriteLine(objStudent.StudentName);
15             sw.WriteLine(objStudent.Age);
16             sw.WriteLine(objStudent.Birthday);
17             sw.WriteLine(objStudent.Gender);
18             //关闭对象
19             sw.Close();
20             fs.Close();

二、读取对象数据，并显示；

 1           FileStream fs = new FileStream("objStudent.obj", FileMode.Open);
 2             StreamReader sr = new StreamReader(fs);
 3             //逐行读取；
 4             Student objStudent = new Student()
 5             {
 6                 StudentName = sr.ReadLine(),
 7                 Age = Convert.ToInt32(sr.ReadLine()),
 8                 Birthday = Convert.ToDateTime(sr.ReadLine()),
 9                 Gender = sr.ReadLine()
10             };
11             sr.Close();
12             fs.Close();
13 
14             //显示数据
15             this.txtStudentName.Text = objStudent.StudentName;
16             this.txtAge.Text = objStudent.Age.ToString();
17             this.txtBirthday.Text = objStudent.Birthday.ToShortDateString();
18             this.txtGender.Text = objStudent.Gender;

 

posted @ 2017-07-28 11:06  sadseal  阅读(3363)  评论(0)  编辑  收藏  举报