Code always search the last record not the number I inputed - vb.net

Question

Why my code always search the last record not the one I searched, like this 8850338005909.
Here is code Sample Data in Textfile:
8501045891528,2271,"ADAMS CNDY HALLS
HNYLMN100S/36",57.25,36.00,4822,1,100,101,465
8850338001604,2271,"ADAMS CNDY HALLS
HNYLMN100S/36",57.25,36.00,4822,1,100,101,465
8850338005909,2271,"ADAMS CNDY HALLS
HNYLMN100S/36",57.25,36.00,4822,1,100,101,465
8850338002519,2312,"CLRTS CNDY COOL MINT
40S/60",27.75,60.00,7049,1,100,101,465 8850338001000,2313,"ADAMS GUM
CLRETSTWIN PK14GX2/1",66.50,1.00,4822,1,100,101,470
4804880224138,2315,"BGUIO OIL CKNG
16KG/1",978.00,1.00,6135,1,192,193,639
And my code:
Private Sub Data2()
Dim text As String = IO.File.ReadAllText("C:\ITEMRTV.txt")
Dim index As Integer = text.IndexOf(TextBox1.Text)
Dim Values() As String = Split(text, ",")
If index >= 0 Then
' String is in file, starting at character "index"
Label1.Text = Values(0) ' now contains first column value,
Label2.Text = Values(1) ' contains second column, etc.
Label3.Text = Values(2)
Label4.Text = Values(3)
Label5.Text = Values(4)
Label6.Text = Values(5)
End If
End Sub

Answer 1

Try this:
Dim text As String = IO.File.ReadAllText("C:\ITEMRTV.txt")
Dim Values() As String = text.Split(New String() {",", Environment.NewLine}, StringSplitOptions.None)
Dim index As Integer = Array.IndexOf(Values, TextBox1.Text)
If index >= 0 Then
Label1.Text = Values(index)
Label2.Text = Values(index + 1)
Label3.Text = Values(index + 2)
Label4.Text = Values(index + 3)
Label5.Text = Values(index + 4)
Label6.Text = Values(index + 5)
End If
But you should divide into lines and columns:
Dim text() As String = IO.File.ReadAllLines("C:\ITEMRTV.txt")
Dim s() As String
For Each line As String In text
s = line.Split(","c)
If s(0).Equals(TextBox1.Text, StringComparison.CurrentCultureIgnoreCase) _
AndAlso s.Length > 5 Then
Label1.Text = s(0)
Label2.Text = s(1)
Label3.Text = s(2)
Label4.Text = s(3)
Label5.Text = s(4)
Label6.Text = s(5)
Exit For
End If
Next
You could even create your own structure to hold the data, what would be the better option. For example, declarin a Dictionary(Of Integer, List(Of String)) for each file, because the first field looks like a ID, or declaring your own class to hold each field appropiately.