Hi I'm created a program for a project and I've now started running some tests and the score for the user isn't being calculated correctly and I believe that it can't compare the answer given to the correct answer. I'm very confused and need any help that can be given. My code looks like this, any confusing parts and I'll try and explain.
Imports System.IO
Public Class QuestionScreen
Dim score As Integer = 0
Dim count As Integer
Dim Difficulty_ext As String
Dim questions, answers As New List(Of String)()
Private i As Integer
Sub ReadFile()
If Main.Diff_DDown.Text = "Easy" Then
Difficulty_ext = "questions - Easy"
ElseIf Main.Diff_DDown.Text = "Medium" Then
Difficulty_ext = "questions - Medium"
Else
Difficulty_ext = "questions - Difficult"
End If
Randomize()
Dim countline = File.ReadAllLines("c:\Users\Alice\Desktop\programme files\" & Difficulty_ext & ".txt").Length
Dim numline As Integer
Dim values() As String
Using sr As New StreamReader("c:\Users\Alice\Desktop\programme files\" & Difficulty_ext & ".txt")
While Not sr.EndOfStream
values = sr.ReadLine().Split(","c)
questions.Add(values(0))
answers.Add(values(1))
End While
End Using
numline = Int(Rnd() * countline)
For i As Integer = 0 To numline
Question.Text = questions(i)
Act_ANS.Text = answers(i)
Next
End Sub
Private Sub Pass_Btn_Click(sender As Object, e As EventArgs) Handles Pass_Btn.Click
If count < 10 Then
Call ReadFile()
count = count + 1
Ans_TxtBx.Text = ""
Hid_Score.Text = score
Else
ResultsScreen.Show()
Me.Hide()
End If
End Sub
Public Sub Submit_Btn_Click(sender As Object, e As EventArgs) Handles Submit_Btn.Click
If count < 10 Then
Call ReadFile()
count = count + 1
If Ans_TxtBx.Text = answers(i) Then
score = score + 1
End If
Hid_Score.Text = score
Else
ResultsScreen.Show()
Me.Hide()
count = 0
End If
Ans_TxtBx.Text = ""
End Sub
Private Sub QuestionScreen_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Call ReadFile()
End Sub
End Class
OK..... Try this, I have debugged your code trying to leave it pretty much as you had it, there were a number of problems, nothing major just a few lines of code in the wrong place....
Imports System.IO
Public Class Form1
Dim score As Integer = 0
Dim count As Integer
Dim Difficulty_ext As String
Dim questions, answers As New List(Of String)()
Private i As Integer
Sub ReadFile()
If Diff_DDown.Text = "Easy" Then
Difficulty_ext = "questions - Easy"
ElseIf Diff_DDown.Text = "Medium" Then
Difficulty_ext = "questions - Medium"
Else
Difficulty_ext = "questions - Difficult"
End If
Randomize()
Try
Dim countline = File.ReadAllLines("c:\Users\Alice\Desktop\programme files\" & Difficulty_ext & ".txt").Length
Dim numline As Integer
Dim values() As String
' clear the list of questions and answers
answers.Clear()
questions.Clear()
'''''''''''''''''''''''''''''''''''''''''
Using sr As New StreamReader("c:\Users\Alice\Desktop\programme files\" & Difficulty_ext & ".txt")
While Not sr.EndOfStream
values = sr.ReadLine().Split(","c)
questions.Add(values(0))
answers.Add(values(1))
End While
End Using
numline = Int(Rnd() * countline)
For i = 0 To numline
Question.Text = questions(i)
Act_ANS.Text = answers(i)
Next
Catch ex As Exception
End Try
End Sub
Private Sub Pass_Btn_Click(sender As Object, e As EventArgs) Handles Pass_Btn.Click
If count < 10 Then
count = count + 1
Ans_TxtBx.Text = ""
Hid_Score.Text = score
Else
ResultsScreen.Show()
Me.Hide()
End If
Call ReadFile() ' move this to the bottom
End Sub
Public Sub Submit_Btn_Click(sender As Object, e As EventArgs) Handles Submit_Btn.Click
If count < 10 Then
count = count + 1
If Ans_TxtBx.Text = answers(i - 1) Then ' need to subtract 1 here
score = score + 1
End If
Hid_Score.Text = score
Else
ResultsScreen.Show()
Me.Hide()
count = 0
End If
Ans_TxtBx.Text = ""
Call ReadFile() ' move this to the bottom
End Sub
Private Sub QuestionScreen_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Call ReadFile()
End Sub
End Class
Related
i am having a bit of issue with exporting my data from a List-view in VB.NET i have included screenshots of what i am seeing basically i want to see only the Values in my csv file when i export it,
as you can see i am seeing what the List-box is showing, those values are coming from the List View Before Export. also i need the export to be in 1 column not rows as shown
any help would be great..
''''
Imports System.IO
Imports System.IO.StreamReader
Imports System.IO.StreamWriter
Imports System.Data.DataSet
Public Class Form1
Private Sub startcol_Click(sender As Object, e As EventArgs) Handles startcol.Click
Timer1.Enabled = True
End Sub
Private Sub stopcol_Click(sender As Object, e As EventArgs) Handles stopcol.Click
Timer1.Enabled = False
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
Const MIN As Double = 5.0
Const MAX As Double = 400.0
Const DEC_PLACES As Integer = 2
Dim rnd As New Random
Dim list As Integer()
'Generate a random number X where MIN <= X < MAX and then round to DEC_PLACES decimal places.
Dim dbl As Double = Math.Round(rnd.NextDouble() * (MAX - MIN) + MIN, DEC_PLACES)
weight.Text = dbl
Dim newItem As New ListViewItem(weight.Text)
newItem.SubItems.Add(weight.Text)
'newItem.SubItems.Add(TextBox3.Text)
ListBox1.Items.Add(newItem)
ListView1.Items.Add(newItem)
rowcnt.Text = ListView1.Items.Count
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Timer1.Enabled = True
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
' ExportDatasetToCsv(List)
'WriteToTextFile()
Me.DoSave()
End Sub
Private Sub DoSave()
Dim SFD As New SaveFileDialog()
Try
With SFD
.AddExtension = True
.CheckPathExists = True
.CreatePrompt = False
.OverwritePrompt = True
.ValidateNames = True
.ShowHelp = True
.DefaultExt = "txt"
.Filter = _
"CSV Files (*.csv)|*.csv|" & _
"All files|*.*"
.FilterIndex = 1
If .ShowDialog() = Windows.Forms.DialogResult.OK Then
Me.DoSaveItems(.FileName)
End If
End With
Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Exclamation, Me.Text)
End Try
End Sub
' save All values from ListView1
Private Sub DoSaveItems(ByVal fileName As String)
If fileName Is Nothing = False Then
If fileName.Length > 0 Then
Using writer As New System.IO.StreamWriter(fileName)
For Each currentItem As Object In Me.ListView1.Items
writer.Write(currentItem.ToString() & ",")
Next
End Using
End If
End If
End Sub
Public Function ExportListViewToCSV(ByVal filename As String, ByVal lv As ListView) As Boolean
Try
' Open output file
Dim os As New StreamWriter(filename)
' Write Headers
For i As Integer = 0 To lv.Columns.Count - 1
' replace quotes with double quotes if necessary
os.Write("""" & lv.Columns(i).Text.Replace("""", """""") & """,")
Next
os.WriteLine()
' Write records
For i As Integer = 0 To lv.Items.Count - 1
For j As Integer = 0 To lv.Columns.Count - 1
os.Write("""" & lv.Items(i).SubItems(j).Text.Replace("""", """""") + """,")
Next
os.WriteLine()
Next
os.Close()
Catch ex As Exception
' catch any errors
Return False
End Try
Return True
End Function
Public Sub TestExportToCSV()
Dim dlg As New SaveFileDialog
dlg.Filter = "CSV files (*.CSV)|*.csv"
dlg.FilterIndex = 1
dlg.RestoreDirectory = True
If dlg.ShowDialog = Windows.Forms.DialogResult.OK Then
If ExportListViewToCSV(dlg.FileName, ListView1) Then
Process.Start(dlg.FileName)
End If
End If
End Sub
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
'TestExportToCSV()
End Sub
End Class
''''
As you haven't shown us your code, we can't tell you how to modify it specifically. In general though, you can treat the ListView somewhat like a 2D array, looping through the rows and the columns to get the data. That means that you could output the data to a CSV like this:
Using writer As New StreamWriter(filePath)
For rowIndex = 0 To myListView.Items.Count - 1
Dim item = myListView.Items(rowIndex)
'Write a line break before all but the first line.
If rowIndex > 0 Then
writer.WriteLine()
End If
For columnIndex = 0 To myListView.Columns.Count - 1
Dim subItem = item.SubItems(columnIndex)
'Write a field delimiter before all but the first field.
If columnIndex > 0 Then
write.Write(",")
End If
writer.Write(subItem.Text)
Next
Next
End Using
That's the old-school way. There are more succinct options, especially with the advent of LINQ:
File.WriteAllLines(filePath,
myListView.Items.
Cast(Of ListViewItem)().
Select(Function(item) String.Join(",",
item.SubItems.
Cast(Of ListViewItem.ListViewSubItem)().
Select(Function(subItem) subItem.Text))))
EDIT:
If you want to include the column headers then you can modify the above code like so:
Using writer As New StreamWriter(filePath)
For columnIndex = 0 To myListView.Columns.Count - 1
Dim column = myListView.Columns(columnIndex)
'Write a field delimiter before all but the first field.
If columnIndex > 0 Then
writer.Write(",")
End If
writer.Write(column.Text)
Next
For rowIndex = 0 To myListView.Items.Count - 1
Dim item = myListView.Items(rowIndex)
'Write a line break before each line.
writer.WriteLine()
For columnIndex = 0 To myListView.Columns.Count - 1
Dim subItem = item.SubItems(columnIndex)
'Write a field delimiter before all but the first field.
If columnIndex > 0 Then
writer.Write(",")
End If
writer.Write(subItem.Text)
Next
Next
End Using
File.WriteAllLines(filePath,
myListView.Items.
Cast(Of ListViewItem)().
Select(Function(item) String.Join(",",
item.SubItems.
Cast(Of ListViewItem.ListViewSubItem)().
Select(Function(subItem) subItem.Text))).
Prepend(String.Join(",",
myListView.Columns.
Cast(Of ColumnHeader)().
Select(Function(header) header.Text))))
I cannot get my code below to work correctly, in fact I want to press a back button in order to go up the lines one by one of a text file then I cut the chain into 3 parts.
Dim LinesOfText() As String = System.IO.File.ReadAllLines("c:\essai.librairie", Encoding.UTF8)
For line As Integer = LinesOfText.Length - 1 To 0 Step -1
Dim currentLine As String = LinesOfText(line)
Dim value As String = currentLine
Dim startIndex As Integer = 0
Dim length As Integer = 17
Dim substring As String = value.Substring(startIndex, length)
Dim subs As String = value.Substring(17, 90)
Dim subst As String = value.Substring(107, 120)
TextBox1.Text = substring
TextBox2.Text = subs
TextBox3.Text = subst
Next
If you store the lines and a line counter so that they are in scope where needed, you can do it like this:
Imports System.IO
Public Class Form1
Dim lines As String()
Dim currentLine As Integer = -1
Sub LoadData(filename As String)
lines = File.ReadAllLines(filename)
currentLine = lines.Length - 1
End Sub
Sub ShowCurrentLine()
If currentLine >= 0 Then
TextBox1.Text = lines(currentLine).Substring(0, 3)
TextBox2.Text = lines(currentLine).Substring(4, 3)
TextBox3.Text = lines(currentLine).Substring(8, 3)
lblLineNo.Text = (currentLine + 1) & "/" & lines.Length
Else
TextBox1.Clear()
TextBox2.Clear()
TextBox3.Clear()
lblLineNo.Text = "-"
End If
End Sub
Private Sub bnNext_Click(sender As Object, e As EventArgs) Handles bnNext.Click
If currentLine < lines.Length - 1 Then
currentLine += 1
ShowCurrentLine()
End If
End Sub
Private Sub bnPrev_Click(sender As Object, e As EventArgs) Handles bnPrev.Click
If currentLine > 0 Then
currentLine -= 1
ShowCurrentLine()
End If
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
LoadData("C:\temp\SO67209265.txt")
ShowCurrentLine()
End Sub
End Class
You will need to set the substring parameters for your data—I just used a small text file—and the filename to be loaded.
The label lblLineNo is used to show the current line number, starting at 1.
I'm new at visual basic programming and everything was fine until our topic shifted to arrays. I tried to understand it's code using Java. (Example: method are called functions.. .)
My prof has given us an exercise to create a Quiz program that asks the user more than 5 questions (in textbox) with choices (in buttons) and computes the score at the end (All just in one form). If the user click an a button it will tell if it's right or wrong and then proceed to change the question along with the choices.
*Required: - After the user finish the quiz the score will be displayed and there should be a restart button and all the question will be asked again randomly no pattern. - Try to make functions.
I tried searching the web since yesterday and I still have made no progress at my code.
Public Class Form1
Dim questions(5) As String
Dim answers(5) As String
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Method/Function for loading the Q&A
loadQsAndAs()
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
Me.Close()
End Sub
Private Sub loadQsAndAs()
'Questions
questions(0) = "What is 1 + 1?"
questions(1) = "Who is the first man to walk on the Moon?"
questions(2) = "What is the name of the main character in the movie: Yes Man! (2007)"
questions(3) = "If I gave you three apples and you ate two, how many is left?"
questions(4) = "What do you want in your final grade?"
questions(5) = "What is the name of the thing(s) that you use whenever you eat?"
'Answers
answers(0) = "2"
answers(1) = "Neil Armstrong"
answers(2) = "Jim Carrey"
answers(3) = "1"
answers(4) = "A 4.0"
answers(5) = "A Spoon and Fork"
TextBox1.Text = setTheQuestion()
Button1.Text = setTheAnswer1()
Button2.Text = setTheAnswer2()
Button3.Text = setTheAnswer3()
Button4.Text = setTheAnswer4()
End Sub
Private Function setTheQuestion() As String
Dim randomValue As New Random
Dim randomQ As String = ""
Dim i As Integer
Dim index As Integer
For i = 0 To 0
index = randomValue.Next(0, questions.Length)
randomQ &= questions(index)
Next
Return randomQ
End Function
Private Function setTheAnswer1() As String
Dim randomValue As New Random
Dim randomAns As String = ""
Dim i As Integer
Dim index As Integer
For i = 0 To 0
index = randomValue.Next(0, answers.Length)
randomAns &= answers(index)
Next
Return randomAns
End Function
Private Function setTheAnswer2() As String
Dim randomValue As New Random
Dim randomAns As String = ""
Dim i As Integer
Dim index As Integer
For i = 0 To 0
index = randomValue.Next(1, answers.Length)
randomAns &= answers(index)
Next
Return randomAns
End Function
Private Function setTheAnswer3() As String
Dim randomValue As New Random
Dim randomAns As String = ""
Dim i As Integer
Dim index As Integer
For i = 0 To 0
index = randomValue.Next(2, answers.Length)
randomAns &= answers(index)
Next
Return randomAns
End Function
Private Function setTheAnswer4() As String
Dim randomValue As New Random
Dim randomAns As String = ""
Dim i As Integer
Dim index As Integer
For i = 0 To 0
index = randomValue.Next(3, answers.Length)
randomAns &= answers(index)
Next
Return randomAns
End Function
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
loadQsAndAs()
End Sub
End Class
Public Class Form1
Dim questions As New ArrayList
Dim answers As New ArrayList
Dim dtQAMain As New DataTable
Dim questionsCopy As New ArrayList
Dim alAnsButton As New ArrayList 'arraylist to store all answer button.
Dim totalScore As Integer
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles MyBase.Load
'Method/Function for loading the Q&A
alAnsButton.Add(Button1)
alAnsButton.Add(Button2)
alAnsButton.Add(Button3)
alAnsButton.Add(Button4)
loaddtQA()
loadQsAndAs()
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles Button5.Click
Me.Close()
End Sub
Private Sub loaddtQA()
dtQAMain = New DataTable
dtQAMain.Columns.Add("Q")
dtQAMain.Columns.Add("A")
For i = 0 To 5
questions.Add("")
answers.Add("")
Next
'Questions
questions(0) = "What is 1 + 1?"
questions(1) = "Who is the first man to walk on the Moon?"
questions(2) = "What is the name of the main character in the movie: Yes Man!(2007)"
questions(3) = "If I gave you three apples and you ate two, how many is left?"
questions(4) = "What do you want in your final grade?"
questions(5) = "What is the name of the thing(s) that you use whenever you eat?"
'Answers
answers(0) = "2"
answers(1) = "Neil Armstrong"
answers(2) = "Jim Carrey"
answers(3) = "1"
answers(4) = "A 4.0"
answers(5) = "A Spoon and Fork"
For i = 0 To questions.Count - 1
dtQAMain.Rows.Add(questions(i), answers(i)) 'assign QA in table for scoring purpose later
Next
End Sub
Private Sub loadQsAndAs()
Label1.Visible = False
For i = 0 To alAnsButton.Count - 1
alAnsButton(i).visible = True
Next
questionsCopy = New ArrayList
questionsCopy = questions.Clone 'close a copy so we dont effect the actual question copy when randomize and eliminate asked question from arraylist
TextBox1.Text = setTheQuestion()
setTheAnswer()
End Sub
Private Function setTheQuestion() As String
Dim randomValue As New Random
Dim randomQ As String = ""
Dim index As Integer
If questionsCopy.Count <> 0 Then
index = randomValue.Next(0, questionsCopy.Count - 1)
randomQ = questionsCopy(index)
questionsCopy.RemoveAt(index) 'asked question will be remove.
Else ' questions are finished, show the mark
ShowMark()
End If
Return randomQ
End Function
Private Sub setTheAnswer() 'randonmize the answer and assign to button
If TextBox1.Text = "" Then Exit Sub ' if question finish exit sub
Dim randomValue As New Random
Dim NewIndex As Integer
Dim temp As String
Dim answersCopy As ArrayList = answers.Clone
For n = answersCopy.Count - 1 To 0 Step -1
NewIndex = randomValue.Next(0, n + 1)
' Swap them.
temp = answersCopy(n)
answersCopy(n) = answersCopy(NewIndex)
answersCopy(NewIndex) = temp
Next
Dim AnswerRowCheck As Integer = questions.IndexOf(TextBox1.Text)
Dim ActualAnswer As String = dtQAMain.Rows(AnswerRowCheck).Item("A") 'check actual answer
Dim totalRemove As Integer = 0
For i = answersCopy.Count - 1 To 0 Step -1
If totalRemove = 2 Then Exit For
If answersCopy(i) <> dtQAMain.Rows(AnswerRowCheck).Item("A") Then
answersCopy.RemoveAt(i)
totalRemove += 1
End If
Next 'remove 2 of the selection,since only 4 button for answer selection and should not take out the actual answer
For i = 0 To alAnsButton.Count - 1
alAnsButton(i).text = answersCopy(i)
Next
End Sub
Private Sub ShowMark()
For i = 0 To alAnsButton.Count - 1
alAnsButton(i).text = "" 'clear the text, no more input receive from user.
Next
Label1.Visible = True
Label1.Text = totalScore & " out of 6 are correct."
End Sub
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
totalScore = 0
loadQsAndAs() 'refresh question
End Sub
Private Sub Button4_MouseClick(sender As Object, e As MouseEventArgs) Handles Button4.MouseClick, Button3.MouseClick, Button2.MouseClick, Button1.MouseClick
If sender.text = "" Then Exit Sub
Dim AnswerRowCheck As Integer = questions.IndexOf(TextBox1.Text) 'search question number
If dtQAMain.Rows(AnswerRowCheck).Item("A") = sender.text Then 'checking answer
totalScore += 1
End If
TextBox1.Text = setTheQuestion() 'next question
setTheAnswer()
End Sub
End Class
The code had cover most of the necessary comment which include the idea and how it work. Random() and arraylist are the key for this program to function, just pay more attention on it. Good luck.
How about trying this?
Public Class Form1
Dim questions(5) As String
Dim answers(5) As String
Private Sub loadQsAndAs()
'Questions
questions(0) = "What is 1 + 1?"
questions(1) = "Who is the first man to walk on the Moon?"
questions(2) = "What is the name of the main character in the movie: Yes Man! (2007)"
questions(3) = "If I gave you three apples and you ate two, how many is left?"
questions(4) = "What do you want in your final grade?"
questions(5) = "What is the name of the thing(s) that you use whenever you eat?"
'Answers
answers(0) = "2"
answers(1) = "Neil Armstrong"
answers(2) = "Jim Carrey"
answers(3) = "1"
answers(4) = "A 4.0"
answers(5) = "A Spoon and Fork"
Dim random As New Random
Dim indices = { 0, 1, 2, 3, 4, 5 }.OrderBy(Function (n) random.Next()).ToArray()
Dim question = random.Next(questions.Length - 1)
TextBox1.Text = questions(indices(question))
Button1.Text = answers(indices(0))
Button2.Text = answers(indices(1))
Button3.Text = answers(indices(2))
Button4.Text = answers(indices(3))
End Sub
End Class
That's it. Nice and simple. The key trick is creating a randomize indices array to do the lookups into the questions and answers arrays.
Private Dim rnd As Integer
Private Function setTheQuestion() As String
rnd = (CInt(Math.Ceiling(Rnd() * questions.Length)) + 1)
Return questions(rnd)
End Function
Private Function setTheAnswer1() As String
Return answers(rnd)
End Function
I need some help with the histogram. My program counted the words with three, four, five and six letters. Now I need to make simple histogram from the received answers. This is my code:
Public Class Form1
Dim tekst As String
Dim rijec() As String
Dim trazena As String
Dim brojac1 As Integer = 1
Dim brojac2 As Integer = 0
Dim brojac3 As Integer = 0
Private Sub btnUcitaj_Click(sender As Object, e As EventArgs) Handles btnUcitaj.Click
If OpenFileDialog1.ShowDialog = DialogResult.OK Then
RichTextBox1.Text = My.Computer.FileSystem.ReadAllText(OpenFileDialog1.FileName)
End If
End Sub
Private Sub btnPrebroj1_Click(sender As Object, e As EventArgs) Handles btnPrebroj1.Click
tekst = RichTextBox1.Text
rijec = tekst.Split(CChar(" "))
Dim count = From x In rijec Where x.Length = 3
txtTri.Text = ("Number of words: " & count.Count.ToString())
End Sub
Private Sub btnPrebroj2_Click(sender As Object, e As EventArgs) Handles btnPrebroj2.Click
tekst = RichTextBox1.Text
rijec = tekst.Split(CChar(" "))
Dim count = From x In rijec Where x.Length = 4
txtCetiri.Text = ("Number of words: " & count.Count.ToString())
End Sub
Private Sub btnPrebroj3_Click(sender As Object, e As EventArgs) Handles btnPrebroj3.Click
tekst = RichTextBox1.Text
rijec = tekst.Split(CChar(" "))
Dim count = From x In rijec Where x.Length = 5
txtPet.Text = ("Number of words: " & count.Count.ToString())
End Sub
Private Sub btnPrebroj4_Click(sender As Object, e As EventArgs) Handles btnPrebroj4.Click
tekst = RichTextBox1.Text
rijec = tekst.Split(CChar(" "))
Dim count = From x In rijec Where x.Length = 6
txtSest.Text = ("Number of words: " & count.Count.ToString())
End Sub
i need histogram from these results from picture.
Visual Basic actually has a control called a chart which is nice for this kind of situation. I found a tutorial here if you would like to check it out.
I wrote up this function that should work with your code, all you need to do is add a data chart and call it Chart1 and call this function.
Private Sub ShowData()
Chart1.Series.Clear() ' Delete the default data series.
Dim tekst = RichTextBox1.Text
Dim rijec = tekst.Split(CChar(" "))
With Chart1.Series.Add("Word Lengths") ' Add a new series called Word Lengths
For wordLength As Integer = 3 To 6 ' Check every word length from 3 to 6
Dim count = From x In rijec Where x.Length = wordLength ' Count how many words there are
.Points.AddXY(wordLength, count.Count) ' Add a new data point
Next
End With
End Sub
Good luck, I hope this helped!
~Nic
For VB.net 2015
I'm a new programmer. I've been warping my brain around this for 2 days. Can seem to see the problem. It seems I can only add 150 records to the dictionary. I'm not sure where its failing in the code. I'm not getting any errors or warnings.
Really hope someone can give me a hand.
Heres a link to my file I'm working with.
https://drive.google.com/file/d/0B1zf86jcRv49Y1lCMHRvNWt4UFk/view?usp=sharing
P.S. Sry about the crappy coding skill :-)
Imports System
Imports System.IO
Public Class Form1
Dim xx As Integer = 0
Private MainDataList As New Dictionary(Of String, List(Of String))
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim temp1 As List(Of String)
'MsgBox(xx)
If MainDataList.ContainsKey(TextBox1.Text) Then
temp1 = MainDataList.Item(TextBox1.Text)
Label1.Text = temp1(0)
Beep()
Else
Label1.Text = "Not Found"
Beep()
Beep()
End If
TextBox1.Text = ""
End Sub
Private Sub GetData()
Dim ReadDataLine(50000) As String
Try
' Open the file using a stream reader.
Using sr As New StreamReader("C:\Inventory\Invatory.csv")
'Dim line As String
' Read the stream to a string and write the string to the console.
ReadDataLine(0) = sr.ReadLine
Do While (sr.EndOfStream = False)
ReadDataLine(xx) = sr.ReadLine
'AddToList(ReadDataLine) ' pars data into main list
'MsgBox(sr.ReadLine)
xx = xx + 1
Loop
sr.Close()
'line = sr.ReadLine()
End Using
Catch e As Exception
'MsgBox(xx)
MsgBox("The file could not be read:")
MsgBox(e.Message)
End Try
'MsgBox(xx)
'xx = 0
For Each i As String In ReadDataLine
AddToList(i)
'MsgBox(xx)
'xx = xx + 1
Next
End Sub
Private Sub AddToList(data As String)
Dim barCode As String = ""
Dim steps As Integer = 1
Dim LastPos As Integer = 2
Dim datalist As New List(Of String)
Dim firstPass As Boolean = False
For i = 2 To Len(data)
'Find end of cell
If Mid(data, i, 1) = "," Then
If firstPass = False Then
barCode = Mid(data, LastPos, i - 2)
'MsgBox(Mid(data, LastPos, i - 2))
LastPos = i
firstPass = True
Else
Dim temp As Integer = i - LastPos
datalist.Add(Mid(data, LastPos + 1, temp - 1))
'MsgBox(Mid(data, LastPos + 1, temp - 1))
LastPos = i
End If
End If
Next
MainDataList.Add(barCode, datalist)
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
GetData()
Label1.Text = "Ready!"
Me.Show()
TextBox1.Focus()
End Sub
Private Sub Label1_Click(sender As Object, e As EventArgs) Handles Label1.Click
End Sub
End Class