Question

I am new to VB. I read a book and follow its code

Public Class Form1

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
    Dim Wrap As String
    Wrap = Chr(13) & Chr(10)
    Dim i As Integer
    For i = 1 To 4
        PictureBox1.Image = System.Drawing.Image.FromFile("C:\face0" & i & ".ico")
        MsgBox("Click for next face")
    Next
End Sub
End Class

It Works. However, I try to adjust the code to make Wrap become a variable available to the whole form1. I do the following, but it does NOT work. Why?

Public Class Form1

    Dim Wrap As String
    Wrap = Chr(13) & Chr(10)

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click

    Dim i As Integer
    For i = 1 To 4
        PictureBox1.Image = System.Drawing.Image.FromFile("C:\face0" & i & ".ico")
        MsgBox("Click for next face")
    Next
End Sub
End Class

Answer 1

You can’t have arbitrary pieces of code at class level. Wrap = Chr(13) & Chr(10) is an arbitrary piece of code.

If you want to assign a value to a variable, do so with an initializer:

Dim Wrap As String = Chr(13) & Chr(10)

Better yet, use ControlChars.CrLf which is a predefined constant for same.