Question

how to code button titled Open Student Details File.

When this button is clicked, do following: a) Open and read StudentDetails.txt and store the data into a StudentDetails structure array. 

Answer 1

Imports System.IO




Public Class MainForm
  



    Structure StudentDetails
        Public StudentID As String
        Public FirstName As String
        Public LastName As String
        Public Country As String
        Public Responses As String
    End Structure




 
    Private student_Details() As StudentDetails
    Private totalStudentDetails As Integer = 0







    Private Sub btnOpenStudentDetailsFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOpenStudentDetailsFile.Click




        Dim FilePath As String = "StudentDetails.txt"
        Using reader As StreamReader = New StreamReader(FilePath)
            ' Read the number of students 
            Dim numberStudents As Integer = Integer.Parse(reader.ReadLine())
            ReDim student_Details(numberStudents - 1)
            For i As Integer = 0 To numberStudents - 1
                Dim values() = reader.ReadLine().Split(",")
                student_Details(i).StudentID = values(0)
                student_Details(i).FirstName = values(1)
                student_Details(i).LastName = values(2)
                student_Details(i).Country = values(3)
                student_Details(i).Responses = values(4)
                totalStudentDetails += 1
            Next
            reader.Close()
        End Using
        
    End Sub
 



End Class