我可能正在为你做一个任务，大声笑，但这会让你得到你想要的结果：
class Program
{
// Contains the elements of an line after it's been parsed.
static string[] array;
static void Main(string[] args)
{
// Read the lines of a file into a list of strings. Iterate through each
// line and create an array of elements by parsing (splitting) the line by a delimiter (eg. a comma).
// Then display what's now contained within the array of strings.
var lines = ReadFile("dummy.txt");
foreach (string line in lines)
{
array = CreateArray(line);
Display();
}
// Prevent the console window from closing.
Console.ReadLine();
}
// Reads a file and returns an array of strings.
static List<string> ReadFile(string fileName)
{
var lines = new List<string>();
using (var file = new StreamReader(fileName))
{
string line = string.Empty;
while ((line = file.ReadLine()) != null)
{
lines.Add(line);
}
}
return lines;
}
// Create an array of string elements from a comma delimited string.
static string[] CreateArray(string line)
{
return line.Split(',');
}
// Display the results to the console window for demonstration.
static void Display()
{
foreach (string item in array)
{
Console.WriteLine(item);
}
Console.WriteLine();
}
}
文本文件中包含的示例如下：
Bloggs,Joe,John,2015/01/04,M
Jones,Janet,Gillian,2015/01/04,F
Jenfrey,Jill,April,2015/01/04,F
Drogger,Jeff,Jimmy,2015/01/04,M
结果是：
Bloggs
Joe
John
2015/01/04
M
Jones
Janet
Gillian
2015/01/04
F
Jenfrey
Jill
April
2015/01/04
F
Drogger
Jeff
Jimmy
2015/01/04
M
或者，根据您的业务需求，您可以使用以下解决方案生成学生记录对象列表：
class Program
{
static int _recordIndex;
static List<StudentRecord> _studentRecords;
static void Main(string[] args)
{
// Initialize a list of student records and set the record index to the index of the first record.
_studentRecords = new List<StudentRecord>();
_recordIndex = 0;
// Read the lines of a file into a list of strings. Iterate through each
// line and create a list of student records of elements by parsing (splitting) the line by a delimiter (eg. a comma).
// Then display what's now contained within the list of records.
var lines = ReadFile("dummy.txt");
foreach (string line in lines)
{
_studentRecords.Add(CreateStudentResult(line));
}
Display();
// Prevent the console window from closing.
Console.ReadLine();
}
// Reads a file and returns an array of strings.
static List<string> ReadFile(string fileName)
{
var lines = new List<string>();
using (var file = new StreamReader(fileName))
{
string line = string.Empty;
while ((line = file.ReadLine()) != null)
{
lines.Add(line);
}
}
return lines;
}
// Get the next student record in the list of records
static StudentRecord GetNext()
{
// Check to see if there are any records, if not... don't bother running the rest of the method.
if (_studentRecords.Count == 0)
return null;
// If we are on the index of the last record in the list, set the record index back to the first record.
if (_recordIndex == _studentRecords.Count - 1)
{
_recordIndex = 0;
}
// Otherwise, simply increment the record index by 1.
else
{
_recordIndex++;
}
// Return the record at the the new index.
return _studentRecords[_recordIndex];
}
static StudentRecord GetPrevious()
{
// Check to see if there are any records, if not... don't bother running the rest of the method.
if (_studentRecords.Count == 0)
return null;
// If we are on the index of the first record in the list, set the record index to the last record.
if (_recordIndex == 0)
{
_recordIndex = _studentRecords.Count - 1;
}
// Otherwise, simply deincrement the record index by 1.
else
{
_recordIndex--;
}
// Return the record at the the new index.
return _studentRecords[_recordIndex];
}
// Create a StudentResult object containing the string elements from a comma delimited string.
static StudentRecord CreateStudentResult(string line)
{
var parts = line.Split(',');
return new StudentRecord(parts[0], parts[1], parts[2], parts[3], parts[4]);
}
// Display the results to the console window for demonstration.
static void Display()
{
// Display a list of all the records
Console.WriteLine("Student records:\n----------------");
foreach (var record in _studentRecords)
{
Console.WriteLine(record.ToString());
Console.WriteLine();
}
// Display the first record in the list
Console.WriteLine("First record is:\n----------------");
Console.WriteLine(_studentRecords.First().ToString());
Console.WriteLine();
// Display the last record in the list.
Console.WriteLine("Last record is:\n----------------");
Console.WriteLine(_studentRecords.Last().ToString());
Console.WriteLine();
// Display the next record in the list
Console.WriteLine("Next record is:\n----------------");
Console.WriteLine(GetNext().ToString());
Console.WriteLine();
// Display the last record in the list.
Console.WriteLine("Previous record is:\n----------------");
Console.WriteLine(GetPrevious().ToString());
Console.WriteLine();
}
// A record object used to store the elements of parsed string.
public class StudentRecord
{
public string LastName { get; set; }
public string FirstName { get; set; }
public string MiddleName { get; set; }
public string Date { get; set; }
public string Gender { get; set; }
// Default constructor
public StudentRecord()
{
}
// Overloaded constructor that accepts the parts of a parsed or split string.
public StudentRecord(string lastName, string firstName, string middleName, string date, string gender)
{
this.LastName = lastName;
this.FirstName = firstName;
this.MiddleName = middleName;
this.Date = date;
this.Gender = gender;
}
// Overrided ToString method which returns a string of property values.
public override string ToString()
{
return string.Format(
"Last name: {0}\nFirst name: {1}\nMiddle name: {2}\nDate {3}\nGender: {4}",
this.LastName, this.FirstName, this.MiddleName, this.Date, this.Gender);
}
}
}
上述代码的结果如下：
Student records:
----------------
Last name: Bloggs
First name: Joe
Middle name: John
Date 2015/01/04
Gender: M
Last name: Jones
First name: Janet
Middle name: Gillian
Date 2015/01/04
Gender: F
Last name: Jenfrey
First name: Jill
Middle name: April
Date 2015/01/04
Gender: F
Last name: Drogger
First name: Jeff
Middle name: Jimmy
Date 2015/01/04
Gender: M
First record is:
----------------
Last name: Bloggs
First name: Joe
Middle name: John
Date 2015/01/04
Gender: M
Last record is:
----------------
Last name: Drogger
First name: Jeff
Middle name: Jimmy
Date 2015/01/04
Gender: M
Next record is:
----------------
Last name: Jones
First name: Janet
Middle name: Gillian
Date 2015/01/04
Gender: F
Previous record is:
----------------
Last name: Bloggs
First name: Joe
Middle name: John
Date 2015/01/04
Gender: M