二进制序列化(保存并加载)
本文关键字：加载 保存 序列化 二进制 | 更新日期: 2023-09-27 17:56:18
我的问题是，我在旧程序中使用了这种二进制序列化结构，使用与保存和加载对象列表相同的格式。在新程序中，我没有收到任何错误，并且在运行程序并进入保存功能时，它会捕获异常并指出"无法保存文件"。当我手动打开 .Txt 文件，但再次运行程序时，数据不会重新加载。我只是想知道是否有人可以花几分钟时间查看代码，看看我是否缺少任何内容。
编辑* 我现在已经包括了包含教室列表和课堂类的显示类。 希望这有帮助
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;
using System.Xml;
using System.Xml.Serialization;
namespace ExamAssignment
{
[Serializable]
public class SaveLoad
{
public void Save(string filename, List<Classroom> objsave)
{
BinaryFormatter binFormatter = new BinaryFormatter();
//point to the file's location
string strFileLocation = "SAVE.xml";
// Gain code access to the file that we are going `
// to write to
try
{
// Create a FileStream that will write data to file.
FileStream writerFileStream = new FileStream(strFileLocation, FileMode.Create, System.IO.FileAccess.Write);
binFormatter.Serialize(writerFileStream, objsave);
// Close the writerFileStream when we are done.
writerFileStream.Close();
}
catch (Exception)
{
Console.WriteLine("Unable to save the file");
}
}
public List<Classroom> Load()
{
BinaryFormatter binFormatter = new BinaryFormatter();
string strFileLocation = "SAVE.xml";// Check if we had previously Saved Results previously
List<Classroom> objLoad = new List<Classroom>();
if (File.Exists(strFileLocation))
{
try
{
// Create a FileStream will gain read access to the data file.
FileStream readerFileStream = new FileStream(strFileLocation, FileMode.Open, System.IO.FileAccess.Read);// Reconstruct information of the Results from file.
objLoad = (List<Classroom>)
binFormatter.Deserialize(readerFileStream);
// Close the readerFileStream when we are done
readerFileStream.Close();
}
catch (Exception)
{
Console.WriteLine("There seems to be a file that contains the Classrooms but somehow there is a problem " + "with reading it.");// end try-catch
}
}
return objLoad;
// end if
..
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Collections;
using System.Runtime.Serialization.Formatters.Binary;
using System.Runtime.Serialization;
using System.Xml;
using System.Xml.Serialization;
namespace ExamAssignment
{
[Serializable]
public class Display
{
Classroom C1 = new Classroom();
public List<Classroom> ClassList;
SaveLoad objSave = new SaveLoad();
public Display()
{
ClassList = new List<Classroom>();
}
public void saving()
{
objSave.Save("SAVE.xml", ClassList);
}
public void Load()
{
ClassList = objSave.Load();
}
public void addClassroom()
{
Console.WriteLine("Please Enter the number of the classroom");
int ClassNum = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("'nNow enter the module of the classroom");
string ClassModule = Console.ReadLine();
ClassList.Add(new Classroom(ClassNum, ClassModule));
for (int i = 0; i < ClassList.Count(); i++)
{
Console.WriteLine("'nClass Number: {0}, Class Module: {1}", ClassNum, ClassModule);
}
}
public void ViewClass()
{
Console.WriteLine("To view the students and teacher in a classroom please enter the class number");
int selection = Convert.ToInt32(Console.ReadLine());
int index = ClassList.FindIndex(item => selection == item.ClassNum);
ClassList[index].ViewClassroom();
}
public void ViewClassrooms()
{
for (int i = 0; i < ClassList.Count; i++)
{
Console.WriteLine("'nClass Number: {0}, Class Module: {1}", ClassList[i].ClassNum, ClassList[i].ClassModule);
}
}
public void AddStudent()
{
int repeat = 0;
int RoomNumber = 0;
Console.WriteLine("Please state the room number you wish to add the students to");
RoomNumber = Convert.ToInt32(Console.ReadLine());
int index = ClassList.FindIndex(item => RoomNumber == item.ClassNum);
do
{
ClassList[index].AddStudent();
Console.WriteLine("'nThank you, to add another student to the classroom press 1, or to exit press 0");
repeat = Convert.ToInt32(Console.ReadLine());
}
while (repeat == 1);
}
public void removeStudent()
{
int RoomNumber = 0;
Console.WriteLine("'nPlease state the room number you wish to remove the teacher from");
RoomNumber = Convert.ToInt32(Console.ReadLine());
int index = ClassList.FindIndex(item => RoomNumber == item.ClassNum);
ClassList[index].RemoveStudent();
}
public void AddModule()
{
throw new System.NotImplementedException();
}
public void ViewModule()
{
throw new System.NotImplementedException();
}
public void AddTeacher()
{
int repeat = 0;
int RoomNumber = 0;
Console.WriteLine("Please state the room number you wish to add the Teacher to");
RoomNumber = Convert.ToInt32(Console.ReadLine());
int index = ClassList.FindIndex(item => RoomNumber == item.ClassNum);
do
{
ClassList[index].AddTeacher();
Console.WriteLine("'nThank you, to add another teacher to a classroom press 1, or to exit press 0");
repeat = Convert.ToInt32(Console.ReadLine());
}
while (repeat == 1);
}
public void removeTeacher()
{
int RoomNumber = 0;
Console.WriteLine("'nPlease state the room number you wish to remove the teacher from");
RoomNumber = Convert.ToInt32(Console.ReadLine());
int index = ClassList.FindIndex(item => RoomNumber == item.ClassNum);
ClassList[index].RemoveTeacher();
}
}
}
namespace ExamAssignment
{
[Serializable]
public class Classroom
{
private int classNum;
private string classModule;
public Teacher t1;
public List<Student> ClassStudents;
public Display d1;
public int selection;
public Classroom(int newClassNum, string newClassModule)
{
ClassStudents = new List<Student>();
Display d1 = new Display();
classNum = newClassNum;
classModule = newClassModule;
//selection = Newselection;
}
public Classroom()
{
}
public void AddStudent()
{
Console.WriteLine("Please enter the Student Name");
string stuName = Console.ReadLine();
Console.WriteLine("Now enter the student Id");
int stuNum = Convert.ToInt32(Console.ReadLine());
ClassStudents.Add(new Student(stuName, stuNum));
for (int i = 0; i < ClassStudents.Count(); i++)
{
Console.WriteLine("'nStudent Name: {0}, Student ID: {1}", ClassStudents[i].Name, ClassStudents[i].StudentId);
}
}
public void AddTeacher()
{
Console.WriteLine("Please enter the Teacher's name to add to the classroom");
string teachName = Console.ReadLine();
Console.WriteLine("Now enter the Teacher ID");
int teachNum = Convert.ToInt32(Console.ReadLine());
t1 = new Teacher(teachNum, teachName);
}
public void RemoveStudent()
{
int loop = 0;
do
{
int j = 0;
int selection = 0;
for (int i = 0; i < ClassStudents.Count(); i++)
{
Console.WriteLine("'nStudent Name: {0}, Student ID: {1}, {2}", ClassStudents[i].Name, ClassStudents[i].StudentId, j);
j = j + 1;
}
Console.WriteLine("'n'nTo remove a student please choose a number from the list or press 99 to exit");
selection = Convert.ToInt32(Console.ReadLine());
if (selection < 98)
{
loop = 1;
}
else
{
ClassStudents.RemoveAt(selection);
}
}
while (loop == 0);
}
public void RemoveTeacher()
{
int repeat = 0;
do
{
Console.WriteLine("'nTeacher name:{0}, Teacher ID {1}'n", t1.name, t1.staffId);
Console.WriteLine("To remove this teacher press 1 or to go back to the menu press 0");
int selection = Convert.ToInt32(Console.ReadLine());
if (selection == 1)
{
t1 = null;
Console.WriteLine("'n Thank you, this teacher has been removed'n");
}
if (selection == 0)
{
repeat = 0;
}
}
while (repeat == 1);
}
public void ViewClassroom()
{
if (ClassStudents != null)
{
foreach (Student s1 in ClassStudents)
{
Console.WriteLine("'n" + s1.name + " " + s1.studentId);
}
}
if (t1 != null)
{
Console.WriteLine("'nTeacher name: {0}, Teacher ID {1}'n", t1.name, t1.staffId);
}
else
{
Console.WriteLine("there is no teacher associated with this classroom");
}
}
public Teacher One
{
get
{
throw new System.NotImplementedException();
}
set
{
}
}
public Student Many
{
get
{
throw new System.NotImplementedException();
}
set
{
}
}
public Module onE
{
get
{
throw new System.NotImplementedException();
}
set
{
}
}
public int ClassNum
{
get
{
return classNum;
}
set
{
value = classNum;
}
}
public string ClassModule
{
get
{
return classModule;
}
set
{
value = classModule;
}
}
}
}
使用 Serializable 属性标记您的类，因为这是序列化具有 BinaryFormatter 的类所必需的。
[Serializable]
public class Classroom
{
/*...your class definition...*/
}