Visual Basic - Selecting values from a string and defining them as something - vb.net

Question

I have a log file in txt, inside are strings of information. one string looks like this:
49000 120614 12334480 12 32 2 90 90 90 321 384 2 345 873 890
each value between the spaces represents something in specific, (e.g the second line "120614" is the date "12 June 2014") I am writing a program where I load the txt file into it, and then when i click a certain button it will take this string and put all the values into a specific text box, for instance, "Date = 12 06 2014". I have been researching how to find a certain line and declare that line with its contents as something, but I have not found the answer!! I am using Visual Basic to write it, and I really need help with what direction to take, will stramreader be able to do this?? What function am I looking for?
Here is my code for loading the file.. Just incase.
Public Class Form1
Private Sub browsebtn1_Click(sender As Object, e As EventArgs) Handles browsebtn1.Click
Dim filedialog As New OpenFileDialog 'openfiledialog1 is now filedialog'
filedialog.Filter = "Text Document|*.txt" 'filter the openfiledialogs file extension to txt only'
filedialog.Title = "Select Bosvark Log File.." 'openfiledialog title'
If filedialog.ShowDialog = Windows.Forms.DialogResult.OK Then 'if the file is chosen then..'
filepath1.Text = filedialog.FileName 'filepath1 text is file path of selected file'
RichTextBox1.LoadFile(filepath1.Text, RichTextBoxStreamType.PlainText) 'richtextbox1 retrieves the file path and displays the document'
End If
End Sub
Private Sub convertbtn_Click(sender As Object, e As EventArgs) Handles convertbtn.Click
If RichTextBox1.Text = "" Then
MessageBox.Show("Please load a file first!") 'If user doesnt load a file, give them an error message.'
End If
End Sub
Private Sub RichTextBox1_TextChanged(sender As Object, e As EventArgs) Handles RichTextBox1.TextChanged
If RichTextBox1.Text = "" Then
RichTextBox1.Visible = False 'If there is no file loaded, The textbox will not appear.'
Else
RichTextBox1.Visible = True 'if the file is loaded, textbox will appear.'
End If
End Sub
End Class

Answer 1

you can load the contents of the file to a string variable (if the file isnt too large)
Dim intFile As Integer
Dim strFile As String
Dim strData As String
intFile = FreeFile
strFile = "c:\temp\file.txt"
Open strFile For Input As #intFile
strData = Input(LOF(intFile), #intFile)
Close #intFile
you can split all the data into an array per line
Dim strLine() As String
strLine = Split(strData)
you can loop over all lines to perform some action on all lines
Dim lngLine As Long
For lngLine = 0 To UBound(strLine)
'do action
Next lngLine
or just perform an action on one specific line:
dim strField() as String
'split line into array separated per spaces
strField = Split(strLine(lngLine), " ")