vb.net - Erro on VB "Expecting an existing scalar var" -


i trying make function using vb. function collect data report. follows example:

public function headerdata() string dim dados string dados = ""   if not(frm.formquery.fieldbyname("a").asstring  = "s" , _      frm.formquery.fieldbyname("b").asstring  = "s" , _      frm.formquery.fieldbyname("c").asstring  = "s" , _      frm.formquery.fieldbyname("d").asstring  = "s")  dados = dados + "type: "  if frm.formquery.fieldbyname(a).asstring = "s"   dados = dados + "a" end if  if frm.formquery.fieldbyname(b).asstring = "s"   if frm.formquery.fieldbyname(a).asstring = "s"     dados = dados + ", "   end if   dados = dados + "b" end if  if frm.formquery.fieldbyname(c).asstring = "s"   if frm.formquery.fieldbyname(a).asstring = "s" or _      frm.formquery.fieldbyname(b).asstring = "s"      dados = dados + ", "   end if   dados = dados + "c" end if   if frm.formquery.fieldbyname(d).asstring = "s"   if frm.formquery.fieldbyname(a).asstring = "s" or _      frm.formquery.fieldbyname(b).asstring = "s" or _      frm.formquery.fieldbyname(c).asstring = "s"      dados = dados + ", "   end if   dados = dados + "d" end if  dados =  dados + "; "

and function causes error: expecting existing scalar var.

i did other functions same purpose, similar code, using same variable collect data (dados) , did not cause error. happening?

your logic doesn't make sense. highly suggest write few lines , debug. make sure works , write few more lines. writing @ beginning cause trouble.

    dim possiblefields string() = {"a", "b", "c", "d"}     dim foundfields new list(of string)     dim dados string = ""      each field string in possiblefields         if frm.formquery.fieldbyname(field).asstring = "s"             foundfields.add(field)         end if     next      if foundfields.count > 0         dados = string.format("type: {0}; ", string.join(", ", foundfields.toarray()))     end if

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