I've been looking into the SaveFileDialog and OpenFileDialog features, but have been failing to implement them. The actualy program that I would be implementing this in is much larger, so alternative methods are welcomed.

Code:
Public Class Form1
    Public Results(2) As Double

    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged, TextBox2.TextChanged
        Dim A, B, C As Double
        Double.TryParse(TextBox1.Text, A)
        Double.TryParse(TextBox2.Text, B)

        C = A + B

        Label3.Text = C
    End Sub

    Private Sub SaveFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SaveFileDialog1.FileOk
        Dim FileToSaveAs As String = SaveFileDialog1.FileName

        Dim objwriter As New System.IO.StreamWriter(FileToSaveAs)
        For i = 0 To 2
            objwriter.WriteLine(Results(i))
        Next
        objwriter.Close()
    End Sub

    Private Sub SaveToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripButton.Click
        Results(0) = TextBox1.Text
        Results(1) = TextBox2.Text
        Results(2) = Label3.Text
        SaveFileDialog1.ShowDialog()
    End Sub

    Private Sub OpenToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripButton.Click
        OpenFileDialog1.ShowDialog()
        TextBox1.Text = Results(0)
        TextBox2.Text = Results(1)
        Label3.Text = Results(2)
    End Sub

    Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk
        Dim SavedFile As String = OpenFileDialog1.FileName

        Dim objreader As New System.IO.StreamReader(SavedFile)
        For i = 0 To 2
            objreader.ReadLine(Results(i))
        Next
        objreader.Close()
    End Sub
End Class
I also found this page: http://visualbasic.about.com/od/usin...ppsettings.htm which seems to suggest that VB.Net can just save thing automatically

And this thread: http://www.vbforums.com/showthread.p...ht=save+inputs which at the end mentions a "bianary formatter".