I don´t know what kind of data type are the three finder patterns but I think I am getting closer.
private void timer1_Tick(object sender, EventArgs e)
{
if (pictureBox1.Image != null)
{
BarcodeReader barcodeReader = new BarcodeReader();
Result result = barcodeReader.Decode((Bitmap)pictureBox1.Image);
if (result != null)
{
ResultPoint[] location1 = result.ResultPoints;
txtLocation1.Text = location1[0].ToString();
txtLocation2.Text = location1[1].ToString();
txtLocation3.Text = location1[2].ToString();
txtLocation4.Text = location1[3].ToString
();
ZXing.QrCode.Internal.FinderPattern[,] Points = new ZXing.QrCode.Internal.FinderPattern[3,2];
txtPoint1.Text = Points[0, 0].ToString(); *here i have an error
txtPoint2.Text = Points[1, 0].ToString();
txtPoint3.Text = Points[2, 0].ToString(
* I have this error, that I think is from C#
System.NullReferenceException: "Reference to object no established like an instance of an object"
Any help?