Tuesday, October 26 2010

Here is the code for the finished program I made, the one that draws a line.

Private Sub form1_mousedown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
mouseClickCounter = mouseClickCounter + 1

If mouseClickCounter = 1 Then
firstX = e.X
firstY = e.Y
messageToMe(firstX, firstY)
ElseIf mouseClickCounter = 2 Then
secondX = e.X
secondY = e.Y

Dim myGraphics As Graphics
Dim myPen As Pen

myPen = New Pen(Color:=Color.Black, Width:=2)
myGraphics = Graphics.FromHwnd(hwnd:=ActiveForm().Handle)

myGraphics.DrawLine(pen:=myPen, x1:=firstX, y1:=firstY, x2:=secondX, y2:=secondY)
messageToMe(secondX, secondY)

firstX = 0
firstY = 0
secondX = 0
secondY = 0
mouseClickCounter = 0

End If


End Sub

Public Sub messageToMe(ByVal X As Integer, ByVal Y As Integer)
MessageBox.Show("Hello!" & " " & mouseClickCounter & vbTab & "(" & X & ", " & Y & ")")
End Sub
End Class

Monday, October 25th 2010

Me preliminary course load for the upcoming Spring semester:

Scripting 23122 CSYS 2033-190
VB.net / ASP / SQL 22290 CSCI 2893-101
PHP Programming 23990 CSYS 2463-101
Principles of Microeconomics 21483 ECON 2023-313
Intermediate Algebra 22638 March 0123-316

I hope that none of these classes will be canceled.

Overloads Function CountFiles(ByVal minSize As Integer, ByVal maxSize As Integer) As Integer
Debug.WriteLine("You've reqested the files between " & minSize & " and " & maxSize & " bytes.")
Dim files() As String
files = System.IO.Directory.GetFiles("c:\windows")
Dim i, fileCount As Integer
For i = 0 To files.GetUpperBound(0)
Dim FI As New System.IO.FileInfo(files(i))
If FI.Length >= minSize And FI.Length <= maxSize Then
fileCount = fileCount + 1
End If
Next
Return (fileCount)
End Function

Overloads Function CountFiles(ByVal fromDate As Date, ByVal toDate As Date) As Integer
Debug.WriteLine("You've requested the count of files creadted from " & fromDate & " to " & toDate)
Dim files() As String
files = System.IO.Directory.GetFiles("C:\windows")
Dim i, fileCount As Integer
For i = 0 To files.GetUpperBound(0)
Dim FI As New System.IO.FileInfo(files(i))
If FI.CreationTime.Date >= fromDate And FI.CreationTime.Date <= toDate Then
fileCount = fileCount + 1
End If
Next
Return (fileCount)
End Function

Overloads Function CountFiles(ByVal type As String) As Integer
Debug.WriteLine("You've requested the " & type & " files")
'Function Implementation
End Function

Overloads Function CountFiles(ByVal minSize As Integer, ByVal maxSize As Integer, ByVal type As String) As Integer
Debug.WriteLine("You've requested the " & type & " files between " & minSize & " and " & maxSize & " bytes")
End Function

Overloads Function CountFiles(ByVal fromDate As Date, ByVal toDate As Date, ByVal type As String) As Integer
Debug.WriteLine("You've requested teh " & type & " files created from " & fromDate & " to " & toDate)
End Function

Try
Dim num_Items As Integer = Integer.Parse("12345678")
Catch ex As Exception
Console.WriteLine(ex.Message)

End Try

Dim a As Double = 5.687
Dim b As Int32 = 1234

Console.WriteLine(a.ToString)
Console.WriteLine(b.ToString)
Console.WriteLine(483733.2324.ToString)

Dim C As Integer
Console.WriteLine(C.GetType())
Console.WriteLine(C.GetType().ToString)

Console.ReadLine()

i = 3 Or 4
Console.WriteLine(i)
i = 2 And 4
Console.WriteLine(i)
i = 3 Xor 3
Console.WriteLine(i)
i = Not 5
Console.WriteLine(i)
Console.ReadLine()

Here is something I made about drawing lines

Dim myGraphics As Graphics
Dim myPen As Pen

Dim firstX As Integer = InputBox("Please enter the first X coordinate")
Dim firstY As Integer = InputBox("Please enter the first y coordinate")
Dim secondX As Integer = InputBox("please enter the second X coordinate")
Dim secondY As Integer = InputBox("please enter the second Y coordinate")



myGraphics = Graphics.FromHwnd(hwnd:=ActiveForm().Handle)
myPen = New Pen(Color:=Color.Blue, Width:=3)
myGraphics.DrawLine(pen:=myPen, x1:=firstX, y1:=firstY, x2:=secondX, y2:=secondY)

Friday, October 22 2010

This isn't really that fancy, but I mostly did it on my own. I am populating a textbox with more textboxes, where the textboxes location is being determined randomly. I like it.

Public Class Form1

Dim arrayName(1000) As String
Dim index As Integer = 0


Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
playingField.Width = 1200
playingField.Height = 800
playingField.Left = ClientRectangle.Left + 7

Randomize()
Dim x As Integer
Dim y As Integer
Dim MyNewTextbox As New TextBox


x = (Int(Rnd() * 1150)) + playingField.Left + 3
y = (Int(Rnd() * 750)) + playingField.Top + 3

arrayName(index) = "Box" & index




index += 1
MyNewTextbox.Size = New Size(20, 20)
MyNewTextbox.Text = "0"
MyNewTextbox.Location = New Point(x, y)
MyNewTextbox.ForeColor = Color.White
MyNewTextbox.BackColor = Color.Black
MyNewTextbox.BorderStyle = BorderStyle.None
MyNewTextbox.Name = arrayName(index)

If arrayName(index) = "box5" Then
MyNewTextbox.ForeColor = Color.Red

End If

If index Mod 7 = 1 Then
MyNewTextbox.ForeColor = Color.Green
End If

Me.Controls.Add(MyNewTextbox)
MyNewTextbox.BringToFront()





End Sub

Private Sub playingField_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles playingField.TextChanged

End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
For i = 0 To 1000
arrayName(i) = "box" & i
Next i

End Sub
End Class

Dim Message As String
Select Case Now.DayOfWeek
Case DayOfWeek.Monday
Message = "Have a nice week"
Case DayOfWeek.Friday
Message = "Have a nice weekend!"
Case Else
Message = "Welcome back!"

End Select

'' I added a title to the message box, I've done it before from tutorials but couldn't remeber how to do it off the top of my head.

MsgBox(Message, 0, "Title")


End Sub
End Class

These tutorials are from Evangelos Petroutsos

''The IndexOf method locates an instance of a character in a string

Dim MyText As String
MyText = "The quick brown fox jumped over the lazy dog."
Dim position, words As Integer
position = 0 : words = 0
Do While position >= 0
position = MyText.IndexOf(" ", position + 1)
words += 1
Loop
MsgBox("There are " & words & " words in the text.")

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

'' Pmt() is a built-in function for figuring out payments

Dim mPay, totalPay As Double
'' I edited this to allow the end user to put some of their own information
Dim years As Integer
Dim months As Integer

years = InputBox("How many years will you be paying the loan?")
months = monthlyOrNot()
MsgBox(months)
Dim Duration As Integer = months * years
Dim Rate As Single = (7.25 / 100) / 12
Dim Amount As Single = 20000
mPay = -Pmt(Rate, Duration, Amount)
totalPay = mPay * Duration
MsgBox("Each payment will be " & mPay.ToString("C") & vbCrLf & "You will pay back a total of " & totalPay.ToString("C"))




End Sub
Public Function monthlyOrNot()
If MsgBox("Will you be paying monthly?", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
Return 12
ElseIf MsgBox("Will it be quarterly?", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
Return 4
ElseIf MsgBox("Will the payment be bimonthly?", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
Return 6
Else
Return 1
End If
End Function

Thursday 10/21/2010

Here is a quick tutorial I did off of Youtube

Dim X As Integer
Dim Num1 As Integer
Dim size1 As Integer = 1000
Dim arrayStore(size1) As Integer

Randomize()

For X = 1 To 1000
Num1 = Rnd() * 9 + 1
TextBox1.AppendText(Str(Num1))
arrayStore()
Next

Wednesday, October 20th 2010

Public Class Form1

Dim goRight As Boolean
Dim goBottom As Boolean
Dim tickCount As Integer

Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lblOne.Click

End Sub

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick


tickCount += 1



If lblOne.Left >= TextBox1.Right - lblOne.Width - 4 Then
goRight = False
End If

If lblOne.Left <= TextBox1.Left + 3 Then
goRight = True
End If

If goRight = True Then
lblOne.Left += 5
Else
lblOne.Left -= 5
End If


If lblOne.Top <= TextBox1.Top + 3 Then
goBottom = False
End If

If lblOne.Top >= TextBox1.Bottom - lblOne.Height - 4 Then
goBottom = True
End If




If goBottom = True Then
lblOne.Top -= 5
Else
lblOne.Top += 5
End If

End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Timer1.Enabled = True
goRight = True
goBottom = True

tickCount = 1
lblOne.Text = "O"
lblOne.BackColor = TextBox1.BackColor

TextBox1.Width = Me.ClientRectangle.Width - 7
TextBox1.Left = Me.ClientRectangle.Left + 3
TextBox1.Height = Me.ClientRectangle.Height - 10
TextBox1.Top = Me.ClientRectangle.Top + 5


End Sub
End Class

I added the ability to move another character around

Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
Select Case e.KeyCode
Case Keys.Right
lblCharacter.Text = "X"
lblCharacter.Location = New Point(lblCharacter.Location.X + 5, lblCharacter.Location.Y)
Case Keys.Left
lblCharacter.Text = "X"
lblCharacter.Location = New Point(lblCharacter.Location.X - 5, lblCharacter.Location.Y)
Case Keys.Up
lblCharacter.Text = "X"
lblCharacter.Location = New Point(lblCharacter.Location.X, lblCharacter.Location.Y - 5)
Case Keys.Down
lblCharacter.Text = "X"
lblCharacter.Location = New Point(lblCharacter.Location.X, lblCharacter.Location.Y + 5)
End Select
End Sub

I also created a quick program that creates a form

Dim playingField As New TextBox
playingField.Width = 300
playingField.Height = 300
playingField.Multiline = True


Me.Controls.Add(playingField)

Here is a better version of the program to create a form

Dim textDisplay As New TextBox()
textDisplay.Location = New Point(ClientRectangle.Left + 7, ClientRectangle.Top + 7)
textDisplay.Size = New Size(200, 200)
textDisplay.Multiline = True
Me.Controls.Add(textDisplay)

Monday October 18th 2010

Working on some tutorials by Patrice Pelland. It's a bit of a nuisance navigating all the forms, etc. I can see how it is cool to be able to do these things with the design environment instead of coding it by hand, but I am just afraid that they will up and change everything with the next edition of visual basic. not sure if that concern is valid.

If e.CurrentProgress < e.MaximumProgress Then
If pbStatus.Value >= pbStatus.Maximum Then
pbStatus.Value =
pbStatus.Minimum
Else
pbStatus.PerformStep()
End If
Else
pbStatus.Value = pbStatus.Minimum
End If

Thursday 10/14/2010

I am going to convert some psuedo-code I wrote for a class into real VB.net code.

First I am going to test to see if the general principles work.

Const month_list As String = "january february march april may june july august september october november december"


Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim monthName As String
monthName = InputBox("Enter a month")
monthName = monthName.ToLower

If month_list.Contains(monthName) = True Then
MessageBox.Show("That is a month")
Else
MessageBox.Show("That is not a month")
End If
End Sub

OK here is the finished product. Debating whether or not to do a quick tutorial. Will smoke a cigarrette and walk to QT while deciding.

Public Class Form1

Const month_list As String = "january february march april may june july august september october november december"
Const month_31 As String = "january march may july august october december"
Const January_value As Integer = 31
Const February_value As Integer = 28
Const March_value As Integer = 31
Const April_value As Integer = 30
Const May_value As Integer = 31
Const June_value As Integer = 30
Const July_value As Integer = 30
Const August_value As Integer = 31
Const September_value As Integer = 30
Const October_value As Integer = 31
Const November_value As Integer = 30




Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim monthString, doAnother As String
Dim dayInteger, totalValue, totalRemainingValue As Integer
Dim i As Integer = 1
Dim yesOrNo As String
Dim totalRemaingValue As Integer = 0

Do
totalRemaingValue = 0
dayInteger = 0
totalValue = 0

monthString = ""
dayInteger = 0
getMonth(monthString)
getDay(monthString, dayInteger)
getMonthValue(monthString, dayInteger, totalValue)
totalRemaingValue = subtractTotalValue(totalValue)
txtInfo.Text = txtInfo.Text & "Entry " & i & vbTab & monthString.ToUpper & " " & dayInteger & vbTab & totalRemaingValue & " days left in the year." & vbCrLf
i += 1
yesOrNo = InputBox("Do you want to enter another date? Enter NO to stop")
yesOrNo = yesOrNo.ToLower
Loop While yesOrNo <> "no"






End Sub

Sub getMonth(ByRef monthString)
Dim monthCorrect As Boolean = False
While monthCorrect = False
While isNull(monthString) = True
monthString = InputBox("Please enter a month")
End While
monthString = monthString.ToLower
If month_list.Contains(monthString) = True Then
MessageBox.Show("You entered the month " & monthString)
monthCorrect = True
Else
MessageBox.Show("You entered " & monthString & " which is incorrect. Please try again.")
End If
End While
End Sub


Sub getDay(ByVal monthString, ByRef dayInteger)
While dayInteger = 0
dayInteger = InputBox("Please enter a date for the day.")
If dayInteger = "" Then
MessageBox.Show("Please enter a number.")
dayInteger = 0
Else
If monthString.tolower = "february" Then
If dayInteger >= 1 And dayInteger <= 28 Then
MessageBox.Show("You have entered " & monthString.ToUpper & " " & dayInteger)
Else
MessageBox.Show("You entered " & dayInteger & ". That is incorrect. Please try again.")
dayInteger = 0
End If
ElseIf month_31.Contains(monthString) Then
If dayInteger >= 1 And dayInteger <= 31 Then
MessageBox.Show("You have entered " & monthString.ToUpper & " " & dayInteger)
Else
MessageBox.Show("You entered " & dayInteger & ". That is incorrect. Please try again.")
dayInteger = 0
End If
Else
If dayInteger >= 1 And dayInteger <= 30 Then
MessageBox.Show("You have entered " & monthString.ToUpper & " " & dayInteger)
Else
MessageBox.Show("You entered " & dayInteger & ". That is incorrect. Please try again.")
dayInteger = 0
End If
End If
End If
End While
End Sub

Sub getMonthValue(ByVal monthString, ByVal dayInteger, ByRef totalValue)
Select Case monthString.tolower
Case "january"
totalValue = dayInteger
Case "february"
totalValue = dayInteger + January_value
Case "march"
totalValue = dayInteger + January_value + February_value
Case "april"
totalValue = dayInteger + January_value + February_value + March_value
Case "may"
totalValue = dayInteger + January_value + February_value + March_value + April_value
Case "june"
totalValue = dayInteger + January_value + February_value + March_value + April_value + May_value
Case "july"
totalValue = dayInteger + January_value + February_value + March_value + April_value + May_value + June_value
Case "august"
totalValue = dayInteger + January_value + February_value + March_value + April_value + May_value + June_value + July_value
Case "september"
totalValue = dayInteger + January_value + February_value + March_value + April_value + May_value + June_value + July_value + August_value
Case "october"
totalValue = dayInteger + January_value + February_value + March_value + April_value + May_value + June_value + July_value + August_value + September_value
Case "november"
totalValue = dayInteger + January_value + February_value + March_value + April_value + May_value + June_value + July_value + August_value + September_value + October_value
Case "december"
totalValue = dayInteger + January_value + February_value + March_value + April_value + May_value + June_value + July_value + August_value + September_value + October_value + November_value
End Select
End Sub

Function isNull(ByVal variableHolder)
If variableHolder = "" Then
Return True
Else
Return False
End If
End Function

Function subtractTotalValue(ByVal totalValue)
totalValue = 365 - totalValue
Return totalValue
End Function
End Class

Here I am trying to work with rectangular arrays

Dim numbersArray(7, 2) As Integer
Dim numbersString As String = ""
Dim arrayFillerOne As Integer = 0
Dim arrayFillerTwo As UInteger = 0


For integerCounter As Integer = 1 To numbersArray.GetLength(0) - 1
arrayFillerONe = integerCounter * 3
arrayFillerTwo = integerCounter * 4
numbersArray(integerCounter, 0) = arrayFillerOne

Next


For i As Integer = 0 To numbersArray.GetLength(0) - 1
For j As Integer = 0 To numbersArray.GetLength(1) - 1
numbersString &= numbersArray(i, j) & vbTab
TextBox1.Text = numbersString
Next
numbersString &= vbCrLf


Next

I think I've gotten the hang of it. It is a bit tricky to convert numbers into spaces, and vice versa.

Dim numbersArray(7, 2) As Integer
Dim numbersString As String = ""
Dim arrayFillerOne As Integer = 0
Dim arrayFillerTwo As UInteger = 0

For i = 0 To numbersArray.GetLength(0) - 1
numbersArray(i, 0) = i * 3
numbersArray(i, 1) = numbersArray(i, 0) + 5
numbersArray(i, 2) = numbersArray(i, 1) + numbersArray(i, 0)


Next i

For i As Integer = 0 To numbersArray.GetLength(0) - 1
For j As Integer = 0 To numbersArray.GetLength(1) - 1
numbersString &= numbersArray(i, j) & vbTab
TextBox1.Text = numbersString
Next
numbersString &= vbCrLf
Next