The TextBox
does not display unprintable characters, like most text editors can do.
You can, however, simply insert the ↵
symbol yourself, be replacing each newline character with ↵
and a newline character.
Example:
Dim f = New Form()
Dim txt = New TextBox() With { .MultiLine = True, .Dock = DockStyle.Fill}
Dim text = <text>This is just
some multine text
to be displayed</text>.Value
txt.Text = Regex.Replace(text, "(\n\r|\r|\n)", "↵$1")
f.Controls.Add(txt)
f.ShowDialog()
Result: