vb学生管理系统代码

VB学生管理系统的代码可以根据具体需求而有所不同，下面给出一个简单示例：

' 学生类模块
Public Class Student
    Public Property Name As String
    Public Property Age As Integer
    Public Property Grade As Integer

    ' 构造函数
    Public Sub New(name As String, age As Integer, grade As Integer)
        Me.Name = name
        Me.Age = age
        Me.Grade = grade
    End Sub
End Class

' 学生管理系统主模块
Public Class StudentManagementSystem
    Public Students As New List(Of Student)

    ' 添加学生
    Public Sub AddStudent(name As String, age As Integer, grade As Integer)
        Dim student As New Student(name, age, grade)
        Students.Add(student)
    End Sub

    ' 查询学生
    Public Function SearchStudent(name As String) As Student
        For Each student As Student In Students
            If student.Name = name Then
                Return student
            End If
        Next
        Return Nothing
    End Function

    ' 删除学生
    Public Sub DeleteStudent(name As String)
        Dim student As Student = SearchStudent(name)
        If student IsNot Nothing Then
            Students.Remove(student)
        End If
    End Sub
End Class

' 示例代码
Public Sub Main()
    ' 创建学生管理系统对象
    Dim system As New StudentManagementSystem()

    ' 添加学生
    system.AddStudent("张三", 17, 10)
    system.AddStudent("李四", 16, 9)

    ' 查询学生
    Dim student As Student = system.SearchStudent("张三")
    Console.WriteLine("姓名：" & student.Name & " 年龄：" & student.Age & " 年级：" & student.Grade)

    ' 删除学生
    system.DeleteStudent("李四")

    ' 显示剩余学生信息（遍历）
    For Each student In system.Students
        Console.WriteLine("姓名：" & student.Name & " 年龄：" & student.Age & " 年级：" & student.Grade)
    Next
End Sub

这是一个简单的学生管理系统代码示例，包含了学生类和学生管理系统类。主模块中创建一个学生管理系统对象，然后进行添加学生、查询学生、删除学生等操作，并对添加、查询和删除的结果进行输出显示。可以根据需要进行扩展和修改。