winforms - Getting Missing member exception on vb.net windows forms -

getting missing member exception unhandled

dim objdoc xdocument = xdocument.load("kmmiddletier.xml")     dim el = objdoc.descendants("connectionkeys").descendants("connectionkey").where(function(x) x.attribute("key").value = "db_devqce").[select](function(x) x)     dim result = el.attributes("connectionstring").firstordefault().value 

i fixed "option infer" -> on