Try,
“this is first line” + “\n” + “this is second line”
OR
“this is first line” & vbnewline & “this is second line”
OR try following other ways,
Environment.NewLine or vbCrLf or Constants.vbCrLf
Try,
“this is first line” + “\n” + “this is second line”
OR
“this is first line” & vbnewline & “this is second line”
OR try following other ways,
Environment.NewLine or vbCrLf or Constants.vbCrLf