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我正在通過C＃課程工作，所以此問題比現實世界更具學術性。C＃在包含類的數組的類的數組中搜索字符串
我想在包含一個或多個子類（嵌入式）數組的類的數組中搜索字符串。我希望能夠搜索父代和輔助數組。我一直在嘗試.NET框架類庫數組方法，但我無處可去 - 你會看到我的Array.IndexOf返回-1。我在下面粘貼了我的代碼，並會很感激任何建議。我知道有更復雜的方法可以做到這一點，但我需要暫時堅持使用陣列。提前致謝。
using System;
namespace Nested_Arrays
{
public class Program
{
static void Main(string[] args)
{
Student[] StudentArray = new Student[3];
StudentSubjects[] StudentSubjectsArray = new StudentSubjects[3];
StudentArray[0] = new Student() {
StudentName = "Peter", StudentLocation = "Australia"
};
StudentArray[0].StudentSubjectsArray[0] = new StudentSubjects() {
SubjectName = "Calculus", StudentsResult = "Pass"
};
StudentArray[0].StudentSubjectsArray[1] = new StudentSubjects() {
SubjectName = "Algebra", StudentsResult = "Pass"
};
StudentArray[0].StudentSubjectsArray[2] = new StudentSubjects() {
SubjectName = "Statistics", StudentsResult = "Pass"
};
StudentArray[1] = new Student() {
StudentName = "Michelle", StudentLocation = "France"
};
StudentArray[1].StudentSubjectsArray[0] = new StudentSubjects() {
SubjectName = "Engineering", StudentsResult = "Pass"
};
StudentArray[1].StudentSubjectsArray[1] = new StudentSubjects() {
SubjectName = "Algebra", StudentsResult = "Pass"
};
StudentArray[1].StudentSubjectsArray[2] = new StudentSubjects() {
SubjectName = "Aramaic", StudentsResult = "Pass"
};
StudentArray[2] = new Student() {
StudentName = "Mitchell", StudentLocation = "Canada"
};
StudentArray[2].StudentSubjectsArray[0] = new StudentSubjects() {
SubjectName = "Engineering", StudentsResult = "Pass"
};
StudentArray[2].StudentSubjectsArray[1] = new StudentSubjects() {
SubjectName = "Greek", StudentsResult = "Pass"
};
StudentArray[2].StudentSubjectsArray[2] = new StudentSubjects() {
SubjectName = "Aramaic", StudentsResult = "Pass"
};
for (int i = 0; i < 3; i++)
{
Console.WriteLine($ "\n{i + 1,3} {StudentArray[i].StudentName,-10} {StudentArray[i].StudentLocation,-15}");
for (int j = 0; j < 3; j++) {
Console.WriteLine($ "{j + 1,6} {StudentArray[i].StudentSubjectsArray[j].SubjectName,-15} {StudentArray[i].StudentSubjectsArray[j].StudentsResult,-10}");
}
}
String searchString = "Mitchell";
Console.WriteLine($ "\n We are searching for \"{searchString}\"");
int index = Array.IndexOf(StudentArray, searchString);
Console.WriteLine(" The first occurrence of \"{0}\" is at index {1}.", searchString, index);
searchString = "Aramaic";
Console.WriteLine($ "\n We are searching for \"{searchString}\"");
index = Array.IndexOf(StudentSubjectsArray, searchString);
Console.WriteLine(" The first occurrence of \"{0}\" is at index {1}.", searchString, index);
Console.WriteLine($ "\n");
}
public class Student
{
private string studentName;
public string StudentName {
get {
return studentName;
}
set {
studentName = value;
}
}
private string studentLocation;
public string StudentLocation {
get {
return studentLocation;
}
set {
studentLocation = value;
}
}
private StudentSubjects[] studentSubjectsArray = new StudentSubjects[3];
public StudentSubjects[] StudentSubjectsArray {
get {
return studentSubjectsArray;
}
set {
studentSubjectsArray = value;
}
}
//Constructor
public Student() {}
}
public class StudentSubjects {
private string subjectName;
public string SubjectName {
get {
return subjectName;
}
set {
subjectName = value;
}
}
private string studentsResult;
public string StudentsResult {
get {
return studentsResult;
}
set {
studentsResult = value;
}
}
//Constructor
public StudentSubjects() {}
}
}
}
感謝羅迪。 StudentArray [i] .GetType（）。ToString（）返回「TestingForumResponses。程序+學生「，所以你的ifs不會觸發，你的代碼只能通過。 我不太清楚如何使用.GetType - 有什麼建議嗎？ – Joe
我已經完全改變了解決方案，現在它應該可以工作。 –