Using AJAX to Dynamically Fill a Dropdown VB.Net JQuery -


i trying make ajax call fill dropdown when value selected in dropdown. currently, getting syntaxerror: invalid character error, if remove "datatype: json", mess looks html code. dropdown must bound using value , text pairs. aspx code related dropdown:

<%@ page title="" language="vb" autoeventwireup="false" masterpagefile="~/site.master"      codebehind="request.aspx.vb" inherits="ndbedp.request" maintainscrollpositiononpostback="true" %> <asp:content id="content1" contentplaceholderid="headcontent" runat="server"> </asp:content> <asp:content id="content2" contentplaceholderid="featuredcontent" runat="server"> </asp:content> <asp:content id="content3" contentplaceholderid="maincontent" runat="server">     <script type="text/javascript">         $('.entitydrop').live('change', function (event) {             loadstatedrop()         });          var loadstatedrop = function () {             var data = "{'entity':'"+ $('#<%=ddlentity.clientid%> option:selected').val()+"'}"             alert("before ajax(), val: " + $('#<%=ddlentity.clientid%> option:selected').val());             $.ajax({                 type: "post",                 url: "request.aspx/loadstates",                 datatype: "json",                 data: data,                 contenttype: "application/json; charset=utf-8",                 success: function (list) {                     alert(list);                     $('.statedrop').empty()                     $.each(list, function (element) {                         var optn = document.createelement("option");                         optn.text = element.stateabbr;                         optn.value = element.stateid;                         $('.statedrop').append(optn);                     });                 },                 error: function (jqxhr, textstatus, errorthrown) {                     alert("error updating dropdowns: " + errorthrown);                 }             });         };     </script>     <asp:panel id="userinput" runat="server">         <asp:panel id="userinformation" runat="server" borderstyle="none" style="margin-bottom: 0px">             <asp:dropdownlist cssclass="entryfield, entitydrop" id="ddlentity" runat="server" width="95%"></asp:dropdownlist>             <asp:dropdownlist cssclass="entryfield, statedrop" id="ddlexpensestate" runat="server" width="18%"></asp:dropdownlist>             <asp:dropdownlist id="ddlexpenseperiod" runat="server" cssclass="entryfield" width="50%"></asp:dropdownlist>             <asp:dropdownlist id="ddlexpenseyear" runat="server" cssclass="entryfield" width="20%"></asp:dropdownlist>         </asp:panel>     </asp:panel> </asp:content>

this vb.net code:

imports ndbedp.stringextensions imports ndbedp.dropdownextensions imports ndbedp.gridviewextensions imports system.io imports system.web.services imports system.web.script.services imports system.web.script.serialization  public class request     inherits system.web.ui.page      <webmethod()> _     public shared function loadstates(entity integer) dictionary(of string, integer)         dim expensestates dataset = (new requestbus).getexpensestates(entity)         dim returnstates new dictionary(of string, integer)         integer = 0 expensestates.tables(0).rows.count - 1             returnstates.add(expensestates.tables(0).rows(i).item("stateabbr"), expensestates.tables(0).rows(i).item("stateid"))         next         return returnstates     end function end class

let me know if need see other code help.

i have tried doing through webservices, couldn't work either. included webservice , hooked properly, before adding of own code, got: javascript critical error @ line 3, column 1 web service script1002 syntax error. prefer in webservice, i'm open can work.

does know i'm doing wrong here?

edit: changed match current code

first off, not need serialize data coming asp.net ajax page method, json serializes data default.

second, why not returning type method? function , there no return type declared. appears want return list(of t) can loop through results client-side.

here example page method returns current time string:

<webmethod> _ public shared function getdate() string     return datetime.now.tostring() end function

please read become more familiar using jquery directly call asp.net ajax page methods


Comments

Post a Comment

Popular posts from this blog

How to mention the localhost in android -

i trying call localhost in android application. unfortunately not possible used several methods emulator local host http://10.0.2.2/android/dbconnection.php and network ip address http://192.168.1.xx/android/dbconnection.php also http://localhost:8080/android/dbconnection.php but nothing connected localhost. purpose refer stackoverflow answers not working i facing same problem when worked on localhost. referred stackoverflow answer got solution create new emulator works fine in new emulator.
Read more

php - Calling a template part from a post -

i include iframe within post in wordpress. located inside content of post, meaning cannot in post template file, otherwise either before or after. i'd add facebook plugin within posts: <div id="socialwrap"><div class="fb-like" data-href="http://onlinearizonahomes.info" data-send="true" data-width="450" data-show-faces="true" data-font="arial"></div></div> i thinking of calling template part within post <?php get_template_part( 'social' ); ?> cannot use php within post without plugin (i'd avoid using plugin this). an alternative using javascript create html in post, seems unnecessary use of javascript. what best way add html within wordpress post? you can use shortcode. add functions.php function cudjex_fbshare( $atts, $content = null ) { global $post; $link = get_permalink($post->id); return '<div id="socialwrap...
Read more

c# - String.format() DateTime With Arabic culture -

check below code snippet, namespace testdateconvertion { class program { static void main(string[] args) { datetime testvalue = new datetime(2013, 12, 15, 15, 33, 44); cultureinfo culture = new cultureinfo("ar-sa"); string stringvalue = string.format(culture, "{0:d} {0:hh:mm:ss}", testvalue); console.writeline(stringvalue); console.readline(); } } } it gives output 22/02/35 15:33:44 i not getting how possible. whats 35 doing in output there that's 13/12/2015 in hijri, 35 means 1435 in hijri, default date format saudi arabia.
Read more