asp.net - JQuery getJSON() not working when checking email -

i have registration page checks webmethod see if particular value exists in db.

for email validation, have

//checks email against database. $(emailtextbox).blur(function () {     if ($(this).val()) {         email = encodeuri(escape($(this).val()));         alert(email);         $.getjson('/checkavailable.aspx?' + email + ".email", function (results) {             if (results.email == "true") {                 availabilityemail.html('<img src="/app_themes/defaulttheme/misc/tick.png"/>');                 email = true;                 checkvalid();             } else {                 availabilityemail.html('<img src="/app_themes/defaulttheme/misc/cross.png"/>');                 email = false;                 checkvalid();             }         });     } }); 

which uses

private string getemail(string email) {     const string strsql =         "select memberemail someview memberemail = @email";      var sqlcomm = new sqlcommand(strsql, dataconn.connect()) { commandtype = commandtype.text };     sqlcomm.parameters.add(new sqlparameter("@email", sqldbtype.varchar, 255)).value = email;      string rdr = (string)sqlcomm.executescalar();      return !string.isnullorempty(rdr) ? "\"" + "email" + "\"" + " : " + "\"" + "false" + "\"" : "\"" + "email" + "\"" + " : " + "\"" + "true" + "\"" + "\n"; } 

but seems though jquery method never posts when use .. i've tried escape \\., still doesn't work.

can help?

edit:
using encodeuri or not makes no difference. trying convert string value also, comes same result.

debug application , check json result being returned pasting in json validator such jsonlint.com. looks of things, json missing commas.

check out more json on wiki.