我的问题是，我在旧程序中使用二进制序列化的这种结构，使用相同的格式保存和加载对象列表。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，它捕获异常并指出“无法保存文件”。当我手动打开.Txt文件时，会保存某种形式的数据，但在再次运行程序时，数据不会重新加载。我只是想知道是否有人可能需要几分钟时间查看代码并查看是否存在是我所缺少的。
编辑*我现在已经包含了包含教室列表和课堂班级的显示类。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;
}
}
}
}
答案 0 :(得分：1)
使用Serializable属性标记您的班级，因为这是使用BinaryFormatter对类进行序列化所必需的。
[Serializable]
public class Classroom
{
/*...your class definition...*/
}