vb.net - VB If statement AND/OR -

if user input "a" or "a" .. output apple. work in letters "b" "c" , fort... where/how should put and/or operator?

private sub txtchange_change()  if txtchange.text = "a"     lbloutput.caption = "apple"  elseif txtchange.text = "b"     lbloutput.caption = "banana"  elseif txtchange.text = "c"     lbloutput.caption = "cat"  elseif txtchange.text = "d"     lbloutput.caption = "dog"  else     lbloutput.caption = "not found"  end if   end sub 

for simple .. use select case

private sub txtchange_change()  select case ucase(txtchange.text) case "a" : lbloutput.caption = "apple" case "b" : lbloutput.caption = "banana" case "c" : lbloutput.caption = "cat" case "d" : lbloutput.caption = "dog" case "red" : lbloutput.backcolor = rgb(255, 0, 0) case else   lbloutput.caption = "not found" end select  end sub