[RESOLVED] VS.NET 2015 getting System.NullReferenceExcept while trying to transfer Strings

[Haider92]

Hi Everyone

I'm trying to use Visual Basic.net 2015 to programming app to use it to split data logger record and store in into array, then use any operations with them...

but the problem is when i try to transfer string between variable i get an error

sell the source code below.

Imports System.Text
Imports System.IO
Public Class Form1
    Dim path As String = Nothing
    Dim splited() As String
    Dim buffer() As String
    Dim truec() As String
    Dim ic As Integer
    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim FileReader As StreamReader
        Dim results As DialogResult
        results = OpenFileDialog1.ShowDialog
        If results = DialogResult.OK Then
            FileReader = New StreamReader(OpenFileDialog1.FileName)
            Document.Text = FileReader.ReadToEnd()
            FileReader.Close()

        End If
    End Sub

    Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button2.Click
        ic = 0
        splited = Document.Text.Split(";")
        MsgBox(splited.Count)
        MsgBox(splited(4))
        buffer = splited(0).Split(",")
        Label1.Text = buffer(0)
        Label2.Text = buffer(1)
        For i As Integer = 0 To splited.Count - 2
            buffer = splited(i).Split(",")
            If buffer(0) = "ROOM_ON" Then
                MsgBox(buffer(1))
                truec(0) = buffer(1)
                ic = ic + 1
            End If
        Next i

    End Sub
End Class

the source code in the attachment contain vb.net source code and text file