textbox1.text="234,2552,567"
For I As Integer = 0 To TextBox1.Text.Length - 1
If TextBox1.Text.IndexOf(",") = I Then
TextBox2.Text += i
End If
Next
呢個方法只能搵到第一個"," 即係index只能找到=3
有咩方法可以搵晒咁多個index