Reading certain lines of a text file and boundary testing ...

Question

Hi all, 
This is only my second post so please be gentle ;P
Basically, my problem is that i want to read certain chunks of a text file into different text boxes. For example, this may be 50 lines in textbox1, then 50 in textbox2, then the rest in textbox3. i know this would involve using a splitter, but i have absolutelyno
idea how i would go about implementation this. any help would be greatly appreciated on this.
my second problem is that i also need to carry out testing on my system. one page in this is the login page. I understand that normal data would be all correct fields and erroneous data would be blank field(s). however, i dont really know what would be boundary
testing for this. The only thing i could think of is correct username but incorrect password but i dont think this is correct. again, any help would be appreciated. 
thanks, 
LTID

Answer 1

Hi all, 
This is only my second post so please be gentle ;P
Basically, my problem is that i want to read certain chunks of a text file into different text boxes. For example, this may be 50 lines in textbox1, then 50 in textbox2, then the rest in textbox3. i know this would involve using a splitter, but i have absolutelyno
idea how i would go about implementation this. any help would be greatly appreciated on this.
my second problem is that i also need to carry out testing on my system. one page in this is the login page. I understand that normal data would be all correct fields and erroneous data would be blank field(s). however, i dont really know what would be boundary
testing for this. The only thing i could think of is correct username but incorrect password but i dont think this is correct. again, any help would be appreciated. 
thanks, 
LTID
I suppose there would be a reason for needing to read some amount of lines into each textbox. But you make no mention of why that would be necessary.
There is such a thing as a delimited text file. Each line would contain a delimiter of some character between fields on each line. That file could be used for displaying information in separate controls on a Form.
But you only mention TextBox's and reading x amount of lines from a file into each TextBox as if you are perhaps providing certain information for each TextBox.
If that is what you want then provided replies will work. If you want to explain what you need to do with regard to information in a file and displaying it otherwise then please explain so that a better method could be provided.
Example using Text Field Parser.
https://msdn.microsoft.com/en-us/library/microsoft.visualbasic.fileio.textfieldparser(v=vs.110).aspx
Option Strict On
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Me.Location = New Point(CInt((Screen.PrimaryScreen.WorkingArea.Width / 2) - (Me.Width / 2)), CInt((Screen.PrimaryScreen.WorkingArea.Height / 2) - (Me.Height / 2)))
Using MyReader As New Microsoft.VisualBasic.FileIO.TextFieldParser("c:\Users\John\Desktop\DelimitedTextFile.Txt")
MyReader.TextFieldType = Microsoft.VisualBasic.FileIO.FieldType.Delimited
MyReader.Delimiters = New String() {"|"}
Dim currentRow As String()
While Not MyReader.EndOfData
Try
currentRow = MyReader.ReadFields()
ListBox1.Items.Add(currentRow(0))
ListBox2.Items.Add(currentRow(1))
ListBox3.Items.Add(currentRow(2))
Catch ex As Microsoft.VisualBasic.FileIO.MalformedLineException
MsgBox("Line " & ex.Message & " is invalid. Skipping")
End Try
End While
End Using
End Sub
End Class
Text in text file DelimitedTextFile.Txt. Delimiter is vertical bar.
Bill|Home Depot|Garden Department
Cheryll|DirectTV|Installer
Charlie|C&K Automotive|Owner
Zorro|Television|Masked Avenger
Samantha|Mayo Clinic|Nurse Practitioner
Mona|Bahia Honda Key State Park|Park Ranger
La vida loca