我正在写一个C＃应用程序，我可以添加各种类型的学生 - 普通学生，学术社会学生，或艺术和文化社会学生。在主表格上，我有3个数据网格（一个列出学术学生，一个列出艺术和文化学生，另一个列出正常学生）。为了让用户指定有关学生的其他信息（如果他们是学术社会学生，或艺术和文化学生，或两者兼有），将打开另一个表格，要求用户添加其他信息。
在指定信息之后，我想获取该信息，并将其添加到相关数据网格，换句话说，更新主窗体中的数据网格。
我怎么想我会解决这个问题：
我尝试了以上操作，但我得到了错误：
错误1可访问性不一致：参数类型'ONT2000_Practical_05.AcademicSocieties'不如方法'ONT2000_Practical_05.Form1.addAcademicStudentRow（ONT2000_Practical_05.AcademicSocieties）'c：\ users \ okuhle \ documents \ visual studio 2013 \ Projects \ ONT2000 Practical 05 \ ONT2000 Practical 05 \ Form1.cs 35 21 ONT2000 Practical 05
我有3个班级 - 学术团体，ArtsAndCultureSociety和学生......学术团体和ArtsAndCultureSociety都继承了学生班级。以下是课程的代码：
THE STUDENT CLASS:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ONT2000_Practical_05
{
public class Student
{
private String studentNumber;
private String studentName;
private String studentDegree;
public Student(string number, string name, string degree)
{
studentNumber = number;
studentName = name;
studentDegree = degree;
}
public String getStudentName()
{
return studentName;
}
public String getStudentNumber()
{
return studentNumber;
}
public String getStudentDegree()
{
return studentDegree;
}
}
}
THE ACADEMICSSOCIETY CLASS：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ONT2000_Practical_05
{
public class AcademicSocieties : Student
{
private String courseCode;
private String societyName;
public AcademicSocieties(String studentName, String studentNumber, String studentDegree, String courseCode, String societyName) : base(studentNumber, studentName, studentDegree)
{
this.courseCode = courseCode;
this.societyName = societyName;
}
public String getCourseCode()
{
return courseCode;
}
public String getSocietyName()
{
return societyName;
}
}
}
ARTSANDCULTURE SOCIETY CLASS
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ONT2000_Practical_05
{
class ArtsAndCultureSociety : Student
{
private int experienceLevel;
private int competitionWins;
private String societyName;
private Boolean colours;
public ArtsAndCultureSociety(int level, int wins, string societyName, String studentNumber, String studentName, String studentDegree) : base(studentNumber, studentName, studentDegree)
{
experienceLevel = level;
competitionWins = wins;
this.societyName = societyName;
}
}
}
主要表格：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ONT2000_Practical_05
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void academicSocietiesToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void degreeLabel_Click(object sender, EventArgs e)
{
}
private void exitApplicationToolStripMenuItem_Click(object sender, EventArgs e)
{
Environment.Exit(0);
}
public void addAcademicStudentRow(AcademicSocieties thisStudent) //This is where the Error Occurs
{
academicSocietiesDataGrid.Rows.Add(thisStudent.getStudentName(), thisStudent.getSocietyName(), thisStudent.getCourseCode());
}
private void addStudentButton_Click(object sender, EventArgs e)
{
String studentName = ProgramFunctions.validateTextBoxData(studentNameTextBox);
String studentNumber = ProgramFunctions.validateStudentNumber(studentNumberTextBox);
String studentDegree = ProgramFunctions.validateTextBoxData(degreeTextBox);
if (studentName.Equals(null) || studentNumber.Equals(null) || studentDegree.Equals(null) || studentDegree.Equals("null")) //Error 1 is on this line
{
ProgramFunctions.displayMessage("Data Integrity Error", "As a result of one or more fields failing data validation, this application will not continue processing data");
} else
{
if (artsAndCultureCheckBox.Checked && academicCheckBox.Checked)
{
Student newStudent = new Student(studentNumber, studentName, studentDegree);
StudentData.setCurrentStudent(newStudent);
ProgramFunctions.saveCurrentForm(this);
GeneralStudentSocietyForm generalForm = new GeneralStudentSocietyForm();
generalForm.Visible = true;
generalForm.Focus();
} else if (academicCheckBox.Checked)
{
Student newStudent = new Student(studentNumber, studentName, studentDegree);
StudentData.setCurrentStudent(newStudent);
ProgramFunctions.saveCurrentForm(this);
AcademicSocietyForm academics = new AcademicSocietyForm();
academics.Visible = true;
academics.Focus();
} else if (artsAndCultureCheckBox.Checked)
{
Student newStudent = new Student(studentNumber, studentName, studentDegree);
StudentData.setCurrentStudent(newStudent);
ProgramFunctions.saveCurrentForm(this);
ArtsAndCultureForm artsAndCulture = new ArtsAndCultureForm();
artsAndCulture.Visible = true;
artsAndCulture.Focus();
} else
{
Student newStudent = new Student(studentNumber, studentName, studentDegree);
StudentData.addNewStudent(newStudent);
ProgramFunctions.displayMessage("Student Added", "A New Student has successfully been added to the database. Click OK to continue");
studentDataDataGird.Rows.Add(newStudent.getStudentName(), newStudent.getStudentNumber(), newStudent.getStudentDegree());
}
}
}
private void Form1_Load(object sender, EventArgs e)
{
ProgramFunctions.addNewAcademicSociety("Accounting Society");
ProgramFunctions.addNewAcademicSociety("Law Student Society");
ProgramFunctions.addNewAcademicSociety("Science Student Society");
ProgramFunctions.addNewAcademicSociety("Information Technology Student Society");
ProgramFunctions.addNewAcademicSociety("Business Science Student Society");
ProgramFunctions.addNewArtsAndCultureSociety("Choir Society");
ProgramFunctions.addNewArtsAndCultureSociety("Hip Hop Society");
ProgramFunctions.addNewArtsAndCultureSociety("Anime Society");
ProgramFunctions.addNewArtsAndCultureSociety("The Hockey Society");
}
private void studentDataDataGird_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
public void academicSocietiesDataGrid_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
}
}
}
PROGRAMFUNCTIONS类（这是我保存表单对象的地方）：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace ONT2000_Practical_05
{
class ProgramFunctions
{
private static List<String> academicSocieties = new List<String>();
private static List<String> artsAndCultureSocieties = new List<String>();
private static Form1 formObject;
public static void saveCurrentForm(Form1 formData)
{
formObject = formData;
}
public static void academicStudentDataGridRow(AcademicSocieties newStudent)
{
formObject.addAcademicStudentRow(newStudent);
}
public static Form1 updateMainForm()
{
return formObject;
}
public static void addNewAcademicSociety(String societyName)
{
academicSocieties.Add(societyName);
}
public static void addNewArtsAndCultureSociety(String societyName)
{
artsAndCultureSocieties.Add(societyName);
}
public static void displayMessage(String title, String Message)
{
MessageBox.Show(Message, title);
}
public static String validateTextBoxData(TextBox thisTextBox)
{
if (thisTextBox.Text.Equals(null) || thisTextBox.Text.Equals("") || thisTextBox.Text.Equals(" "))
{
displayMessage("Empty Data Detected!", "You may not specify empty data for the student");
return null;
} else
{
thisTextBox.Text = thisTextBox.Text.Trim();
thisTextBox.Text = thisTextBox.Text.ToUpper();
return thisTextBox.Text;
}
}
public static String getSelectedItem(ComboBox thisComboBox)
{
return thisComboBox.SelectedItem.ToString();
}
public static int getArtsAndCultureCount()
{
return artsAndCultureSocieties.Count;
}
public static int getAcademicSocietyCount()
{
return academicSocieties.Count;
}
public static String getAcademicSociety(int index)
{
return academicSocieties[index];
}
public static String getArtsAndCultureSociety(int index)
{
return artsAndCultureSocieties[index];
}
public static String validateStudentNumber(TextBox studentNumberTextBox)
{
if (studentNumberTextBox.Text.Equals(null) || studentNumberTextBox.Text.Equals("") || studentNumberTextBox.Text.Equals(" "))
{
displayMessage("Empty Data Detected!", "You did not input any data...Please be sure you do specify some data");
return null;
} else
{
if (!studentNumberTextBox.Text.StartsWith("s"))
{
displayMessage("Invalid Student Number", "You have entered an invalid student number. Please be sure this student number follows the correct format. The student number must begin with a 's' character. ");
return null;
}
if (studentNumberTextBox.Text.Length != 10)
{
displayMessage("Invalid Student Number", "The student number specified may not be longer than 10 characters");
return null;
}
return studentNumberTextBox.Text;
}
}
}
}
答案 0 :(得分：0)
您是否在某些类定义中缺少访问修饰符'public'？如果你没有在ArtsAndCultureSociety之前添加公开，那么它将是私有的。
答案 1 :(得分：0)
将ProgramFunctions，ArtsAndCultureSociety类的访问修饰符更改为public。