Dim a As String =
"https://fritz.box/webservices/homeautoswitch.lua?ain=087610001620&"
Dim b As String = "switchcmd=setswitchtoggle&"
Dim c As String = "sid="
Dim d As String = "<sid>"
 
Dim str2 As String = a & b & c & d
lbl.Text = str2