Imports System.IO

Public Class Form1
    Inherits System.Windows.Forms.Form
    Public list As New ArrayList(10)
    Public i 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 OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
    Friend WithEvents cmdOpen As System.Windows.Forms.Button
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Button4 As System.Windows.Forms.Button
    Friend WithEvents Button5 As System.Windows.Forms.Button
    Friend WithEvents Button6 As System.Windows.Forms.Button
    Friend WithEvents Button7 As System.Windows.Forms.Button
    Friend WithEvents Button8 As System.Windows.Forms.Button
    Friend WithEvents Button9 As System.Windows.Forms.Button
    Friend WithEvents Button10 As System.Windows.Forms.Button
    Friend WithEvents Button11 As System.Windows.Forms.Button
    Friend WithEvents SaveFileDialog1 As System.Windows.Forms.SaveFileDialog
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
        Me.cmdOpen = New System.Windows.Forms.Button
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.Button4 = New System.Windows.Forms.Button
        Me.Button5 = New System.Windows.Forms.Button
        Me.Button6 = New System.Windows.Forms.Button
        Me.Button7 = New System.Windows.Forms.Button
        Me.Button8 = New System.Windows.Forms.Button
        Me.Button9 = New System.Windows.Forms.Button
        Me.Button10 = New System.Windows.Forms.Button
        Me.Button11 = New System.Windows.Forms.Button
        Me.SaveFileDialog1 = New System.Windows.Forms.SaveFileDialog
        Me.SuspendLayout()
        '
        'cmdOpen
        '
        Me.cmdOpen.Location = New System.Drawing.Point(16, 24)
        Me.cmdOpen.Name = "cmdOpen"
        Me.cmdOpen.Size = New System.Drawing.Size(72, 24)
        Me.cmdOpen.TabIndex = 0
        Me.cmdOpen.Text = "Open"
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(16, 72)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(72, 24)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Button1"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(16, 104)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(72, 23)
        Me.Button2.TabIndex = 2
        Me.Button2.Text = "Button2"
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(16, 136)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(72, 23)
        Me.Button3.TabIndex = 3
        Me.Button3.Text = "Button3"
        '
        'Button4
        '
        Me.Button4.Location = New System.Drawing.Point(16, 168)
        Me.Button4.Name = "Button4"
        Me.Button4.Size = New System.Drawing.Size(72, 23)
        Me.Button4.TabIndex = 4
        Me.Button4.Text = "Button4"
        '
        'Button5
        '
        Me.Button5.Location = New System.Drawing.Point(16, 200)
        Me.Button5.Name = "Button5"
        Me.Button5.Size = New System.Drawing.Size(72, 23)
        Me.Button5.TabIndex = 5
        Me.Button5.Text = "Button5"
        '
        'Button6
        '
        Me.Button6.Location = New System.Drawing.Point(16, 232)
        Me.Button6.Name = "Button6"
        Me.Button6.Size = New System.Drawing.Size(72, 23)
        Me.Button6.TabIndex = 6
        Me.Button6.Text = "Button6"
        '
        'Button7
        '
        Me.Button7.Location = New System.Drawing.Point(16, 264)
        Me.Button7.Name = "Button7"
        Me.Button7.Size = New System.Drawing.Size(72, 23)
        Me.Button7.TabIndex = 7
        Me.Button7.Text = "Button7"
        '
        'Button8
        '
        Me.Button8.Location = New System.Drawing.Point(16, 296)
        Me.Button8.Name = "Button8"
        Me.Button8.Size = New System.Drawing.Size(72, 23)
        Me.Button8.TabIndex = 8
        Me.Button8.Text = "Button8"
        '
        'Button9
        '
        Me.Button9.Location = New System.Drawing.Point(16, 328)
        Me.Button9.Name = "Button9"
        Me.Button9.Size = New System.Drawing.Size(72, 23)
        Me.Button9.TabIndex = 9
        Me.Button9.Text = "Button9"
        '
        'Button10
        '
        Me.Button10.Location = New System.Drawing.Point(16, 360)
        Me.Button10.Name = "Button10"
        Me.Button10.Size = New System.Drawing.Size(72, 23)
        Me.Button10.TabIndex = 10
        Me.Button10.Text = "Button10"
        '
        'Button11
        '
        Me.Button11.Location = New System.Drawing.Point(16, 392)
        Me.Button11.Name = "Button11"
        Me.Button11.Size = New System.Drawing.Size(72, 23)
        Me.Button11.TabIndex = 11
        Me.Button11.Text = "Button11"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(352, 502)
        Me.Controls.Add(Me.Button11)
        Me.Controls.Add(Me.Button10)
        Me.Controls.Add(Me.Button9)
        Me.Controls.Add(Me.Button8)
        Me.Controls.Add(Me.Button7)
        Me.Controls.Add(Me.Button6)
        Me.Controls.Add(Me.Button5)
        Me.Controls.Add(Me.Button4)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.cmdOpen)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region

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

    End Sub

    Private Sub cmdOpen_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdOpen.Click

        Dim oFile As System.IO.File
        Dim oRead As System.IO.StreamReader
        Dim LineIn As String
        With OpenFileDialog1
            .Filter = "Text Files (*.txt)|*.txt"
            .FilterIndex = 1
            .FileName = "Names2.txt"
            .Title = "Pick a file to open..."
            .CheckFileExists() = True
            .CheckPathExists = True
            .ValidateNames = True
            .DereferenceLinks = True

            If .ShowDialog() = DialogResult.OK Then
                oRead = oFile.OpenText(.FileName)

                While oRead.Peek <> -1
                    list.Add(oRead.ReadLine())
                End While
                oRead.Close()
            Else
                MessageBox.Show("Please Select a File", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
            End If
        End With
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim i As Integer
        MessageBox.Show(list.Count)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim count As Integer
        For i = 0 To list.Count - 1
            If Mid(list(i), 1, 1) = "A" Then
                count += 1
            End If
        Next
        MessageBox.Show("There are " & count & " name(s) starting with ""A""")
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Dim count As Integer
        For i = 0 To list.Count - 1
            If Mid(list(i), 1, 1) = "E" Then
                count += 1
            End If
        Next
        MessageBox.Show("There are " & count & " name(s) starting with ""E""")
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        Dim letter As String = InputBox("Please enter a letter")
        Dim count As Integer
        For i = 0 To list.Count - 1
            If Mid(list(i), 1, 1) = letter Then
                count += 1
            End If
        Next
        MessageBox.Show("There are " & count & " name(s) starting with " & letter)

    End Sub

    Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
        Dim name As String = InputBox("Please enter a name")
        Dim count As Integer
        For i = 0 To list.Count - 1
            If list(i) = name Then
                count += 1
            End If
        Next
        MessageBox.Show("There are " & count & " " & name & "(s)")
    End Sub

    Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
        Dim letter As String = InputBox("Please enter a letter")
        Dim count As Integer
        For i = 0 To list.Count - 1
            If Mid(list(i), Len(list(i)), 1) = letter Then
                count += 1
            End If
        Next
        MessageBox.Show("There are " & count & " names ending in " & letter)
    End Sub

    Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
        Dim letter As String = InputBox("Please enter a letter")
        Dim count As Integer
        For i = 0 To list.Count - 1
            If Mid(list(i), 2, 1) = letter Then
                count += 1
            End If
        Next
        MessageBox.Show("There are " & count & " names which second letter is " & letter)
    End Sub

    Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
        Dim count, j As Integer
        For i = 0 To list.Count - 1
            For j = 1 To Len(list(i))
                If Mid(list(i), j, 1) = "a" Then
                    count += 1
                End If
            Next
        Next
        MessageBox.Show("There are " & count & " a's in the file Names2.txt")
    End Sub

    Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click
        Dim count, countB, j As Integer
        For i = 0 To list.Count - 1
            For j = 1 To Len(list(i))
                If Mid(list(i), j, 1) = "b" Then
                    count += 1
                End If
                If Mid(list(i), j, 1) = "B" Then
                    countB += 1
                End If
            Next
        Next
        MessageBox.Show("There are " & count & " b's" & vbNewLine _
        & "There are " & countB & " B's in the file Names2.txt")
    End Sub

    Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click
        Dim count, count2, j As Integer
        Dim letter As String = InputBox("Please enter a letter").ToLower
        For i = 0 To list.Count - 1
            If InStr(list(i), letter) > 0 Then
                count += 1
            End If
            If InStr(list(i), letter.ToUpper) > 0 Then
                count2 += 1
            End If
        Next
        MessageBox.Show("There are " & count & " names with " & letter.ToLower & vbNewLine _
        & "There are " & count2 & " names with " & letter.ToUpper & " in the names2.txt file")
    End Sub

    Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
        Dim savelist As New ArrayList(10)
        Dim count, count2, j As Integer
        Dim letter As String = InputBox("Please enter a letter").ToLower
        For i = 0 To list.Count - 1
            If InStr(list(i), letter) > 0 Then
                savelist.Add(list(i))
            End If
            If InStr(list(i), letter.ToUpper) > 0 Then
                savelist.Add(list(i))
            End If
        Next

        With SaveFileDialog1
            .Filter = "Text Files (*.txt)|*.txt"
            .FilterIndex = 1
            .Title = "Pick a file to open..."
            .CheckPathExists = True
            .ValidateNames = True
            .DereferenceLinks = True

            If .ShowDialog() = DialogResult.OK Then
                Dim oWrite As New System.IO.StreamWriter(.FileName)
                For i = 0 To savelist.Count - 1
                    oWrite.WriteLine(savelist(i))
                Next
                oWrite.Close()
            Else
                MessageBox.Show("Please Select a File", "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
            End If
        End With
    End Sub
End Class