我正在尝试读取以下格式的文本文件: (最后的#号只是他们所在课程的数量,但我没有将课程名称保存在fac / students类中)
Course Biology
Faculty Taylor Nate 0
Student Doe John 3
Student Sean Big 0
Course Art
Faculty Leasure Dan 1
首先输入的应该是一门课程,然后是该特定课程的教职员工。课程课程应包含教师和学生的集合。
我已经能够将每门课程/学生/教师放到各自的班级,但是我很难想象将学生/教师添加到课程中的方法。
我当前的想法是将数据放入各自的类中,以便保留课程的当前索引,因此我将其另存为
courses[currentCourse++]
因此,当我解析下一行时,(作为教师/学生)我已经知道课程索引应该是什么。
using (StreamReader reader = new StreamReader(fileName))
{
while (!reader.EndOfStream)
{
lineCounter++;
line = reader.ReadLine();
string[] words = line.Split(' ');
Console.WriteLine(words[0]);
if (words[0] == "Course")
{
string nameOfCourse = words[1];
courses[currentCourse++] = new Course
{
Name = nameOfCourse
};
}
if (words[0] == "Faculty")
{
string firstName = words[1];
string lastName = words[2];
string numOfClasses = words[3];
faculty[currentFaculty++] = new Faculty
{
FirstName = firstName,
LastName = lastName,
NumOfClasses = numOfClasses,
};
}
if (words[0] == "Student")
{
string firstName = words[1];
string lastName = words[2];
string numOfClasses = words[3];
students[currentStudent++] = new Student
{
FirstName = firstName,
LastName = lastName,
NumOfClasses = numOfClasses,
};
}
我知道问题出在课程班级本身,但是我不确定将班级添加到另一个班级的术语。
public class Course
{
public override string ToString()
{
return $"{Name}";
}
public string Name { get; set; }
}
public class Student
{
public override string ToString()
{
return $"{FirstName} {LastName} {NumOfClasses}";
}
public string FirstName { get; set; } = string.Empty;
public string LastName { get; set; } = string.Empty;
public string NumOfClasses { get; set; } = string.Empty;
}
感谢阅读!
答案 0 :(得分:1)
您要向课程添加Student
和Faculty
的集合,对吗?只需将List<T>
添加到Course
类中,然后在构造函数中对其进行初始化,就可以做到这一点。
public class Course
{
public override string ToString()
{
return $"{Name}";
}
public string Name { get; set; }
public List<Student> Students { get; set; }
public List<Faculty> FacultyMems { get; set; }
public Course()
{
Students = new List<Student>();
FacultyMems = new List<Faculty>();
}
}
在您的using
块中,您可以按以下方式将每个学生/教职员工添加到课程中:
if (words[0] == "Course")
{
string nameOfCourse = words[1];
currentCourse++;
courses[currentCourse] = new Course
{
Name = nameOfCourse
};
}
if (words[0] == "Faculty")
{
string firstName = words[1];
string lastName = words[2];
string numOfClasses = words[3];
courses[currentCourse].FacultyMems.Add(new Faculty
{
FirstName = firstName,
LastName = lastName,
NumOfClasses = numOfClasses,
});
}
if (words[0] == "Student")
{
string firstName = words[1];
string lastName = words[2];
string numOfClasses = words[3];
courses[currentCourse].Students.Add(new Student
{
FirstName = firstName,
LastName = lastName,
NumOfClasses = numOfClasses,
});
}
这样,每次遇到"Course"
时,您的课程列表都会添加一个新项目,然后您可以在出现这些值时附加学生/教师/等。
这可以进一步简化,但是这里有一个概念供您遵循。希望这会有所帮助。
答案 1 :(得分:0)
如果我对您的理解正确,那么您是否希望course
列出教师和学生的名单?
public class Course
{
public override string ToString()
{
return $"{Name}";
}
public string Name { get; set; }
public List<Student> Students { get; set; }
public List<Faculty> FacultyMembers {get; set;}
}
请确保在尝试将列表添加到列表之前初始化列表,否则您将获得null引用异常。