I need to combine two multiline textboxes in vb net, like this:

```none
textbox1:
a
b
c
d

textbox2:
1
2
3
4

textbox3:
a1
b2
c3
d4

```

Just a form with three textboxes. And a button to merge/combine/concatenate each value from t1 and t2, in t3. 

one of my attempts:

Private Sub Button3\_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click

```
    For Each line In TextBox1.Lines
        For Each linex In TextBox2.Lines
            Me.TextBox3.Text += line & linex
            Me.TextBox3.Text += Environment.NewLine
        Next
    Next

End Sub

```

but result combination of lines (lines=linex) taken by two (a1,a2,a3,b1,b2,b3...)