' Project PhoneBook4

' Find phone number given the name in a Windows application.
' Use one array list with comma delimited strings loaded
' from a text file.

Imports System.IO
Public Class Form1
    Inherits System.Windows.Forms.Form

    Public phoneNumberEntries(12) As String
    Public index As Integer

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    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.
    Friend WithEvents txtNameToFind As System.Windows.Forms.TextBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents btnSearch As System.Windows.Forms.Button
    Friend WithEvents txtPhoneNumber As System.Windows.Forms.TextBox
    Friend WithEvents Label2 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.txtNameToFind = New System.Windows.Forms.TextBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.txtPhoneNumber = New System.Windows.Forms.TextBox
        Me.Label2 = New System.Windows.Forms.Label
        Me.btnSearch = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'txtNameToFind
        '
        Me.txtNameToFind.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.25!, _
            System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, _
            CType(0, Byte))
        Me.txtNameToFind.Location = New System.Drawing.Point(32, 24)
        Me.txtNameToFind.Name = "txtNameToFind"
        Me.txtNameToFind.Size = New System.Drawing.Size(216, 29)
        Me.txtNameToFind.TabIndex = 0
        Me.txtNameToFind.Text = ""
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(72, 64)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(144, 24)
        Me.Label1.TabIndex = 1
        Me.Label1.Text = "Name To Find"
        '
        'txtPhoneNumber
        '
        Me.txtPhoneNumber.Font = New System.Drawing.Font("Microsoft Sans Serif", _
            14.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, _
            CType(0, Byte))
        Me.txtPhoneNumber.Location = New System.Drawing.Point(32, 104)
        Me.txtPhoneNumber.Name = "txtPhoneNumber"
        Me.txtPhoneNumber.Size = New System.Drawing.Size(216, 29)
        Me.txtPhoneNumber.TabIndex = 2
        Me.txtPhoneNumber.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(72, 144)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(144, 24)
        Me.Label2.TabIndex = 3
        Me.Label2.Text = "Phone Number"
        '
        'btnSearch
        '
        Me.btnSearch.Location = New System.Drawing.Point(32, 192)
        Me.btnSearch.Name = "btnSearch"
        Me.btnSearch.Size = New System.Drawing.Size(216, 40)
        Me.btnSearch.TabIndex = 4
        Me.btnSearch.Text = "Search"
        '
        'Form1
        '
        Me.AcceptButton = Me.btnSearch
        Me.AutoScaleBaseSize = New System.Drawing.Size(10, 22)
        Me.ClientSize = New System.Drawing.Size(280, 266)
        Me.Controls.Add(Me.btnSearch)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.txtPhoneNumber)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.txtNameToFind)
        Me.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.25!, _
            System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, _
            CType(0, Byte))
        Me.Name = "Form1"
        Me.Text = "PhoneBook4 Example"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Form1_Load(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles MyBase.Load

        Dim f As New StreamReader("PhoneBookNumbers.txt")
        Dim i As Integer = 0
        Dim line As String

        ' Add names and phonenumbers to names ArrayList.
        index = 0
        While f.Peek() > -1
            line = f.ReadLine()
            phoneNumberEntries(index) = line
            index += 1
        End While
    End Sub

    Private Sub btnSearch_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles btnSearch.Click

        Dim i As Integer
        Dim fields(), name, phoneNumber As String

        For i = 0 To index - 1
            ' Use Split function to extract name and phoneNumber.
            fields = Split(phoneNumberEntries(i), ",")
                name = fields(0)
                phoneNumber = fields(1)
                If txtNameToFind.Text = name Then
                    txtPhoneNumber.Text = phoneNumber
                    Exit Sub
                End If
        Next
        txtPhoneNumber.Text = "Name Not Found"
    End Sub
End Class