Answer to Question #210807 in Visual Basic for Senem221

Question

There is one button and one listbox on the form.

Adding the names and surnames of personnel younger than 35 years old into the listbox when the button is clicked.

is requested.

Using object-oriented programming techniques the required class (with methods) and from that class

code the object to be created.

Thanks in advance to those who help.

Answer 1

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        Try
            If disposing AndAlso components IsNot Nothing Then
                components.Dispose()
            End If
        Finally
            MyBase.Dispose(disposing)
        End Try
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.btnAdd = New System.Windows.Forms.Button()
        Me.lstPersonnel = New System.Windows.Forms.ListBox()
        Me.SuspendLayout()
        '
        'btnAdd
        '
        Me.btnAdd.Location = New System.Drawing.Point(12, 27)
        Me.btnAdd.Name = "btnAdd"
        Me.btnAdd.Size = New System.Drawing.Size(418, 23)
        Me.btnAdd.TabIndex = 0
        Me.btnAdd.Text = "Add"
        Me.btnAdd.UseVisualStyleBackColor = True
        '
        'lstPersonnel
        '
        Me.lstPersonnel.FormattingEnabled = True
        Me.lstPersonnel.Location = New System.Drawing.Point(12, 70)
        Me.lstPersonnel.Name = "lstPersonnel"
        Me.lstPersonnel.Size = New System.Drawing.Size(418, 95)
        Me.lstPersonnel.TabIndex = 1
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(452, 189)
        Me.Controls.Add(Me.lstPersonnel)
        Me.Controls.Add(Me.btnAdd)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
        Me.MaximizeBox = False
        Me.MinimizeBox = False
        Me.Name = "Form1"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "Personnel Younger 35"
        Me.ResumeLayout(False)

    End Sub
    Friend WithEvents btnAdd As System.Windows.Forms.Button
    Friend WithEvents lstPersonnel As System.Windows.Forms.ListBox

End Class

Public Class Form1


    Class Personnel
        Public name As String
        Public surname As String
        Public age As Integer


        Public Overrides Function ToString() As String
            Return name + " " + surname
        End Function
    End Class




    ''' <summary>
    ''' Add button
    ''' </summary>
    ''' <param name="sender"></param>
    ''' <param name="e"></param>
    ''' <remarks></remarks>
    Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
        Dim _Personnel As New Personnel()
        _Personnel.age = Integer.Parse(InputBox("Enter age: "))
        If (_Personnel.age < 35) Then
            _Personnel.name = InputBox("Enter name: ")
            _Personnel.surname = InputBox("Enter surname: ")
            lstPersonnel.Items.Add(_Personnel.ToString())
        End If
    End Sub
End Class