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POError trying to return data from web service using json
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2013-03-29T08:35:54.953
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<p>I am receiving "Internal Server Error" trying to call a web service method from json.</p> <p>Here is the WebService code:</p> <pre><code>Imports System.Web.Services Imports System.Web.Services.Protocols Imports System.ComponentModel <System.Web.Script.Services.ScriptService()> _ <System.Web.Services.WebService(Namespace:="http://tempuri.org/")> _ <System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _ <ToolboxItem(False)> _ Public Class WebService1 Inherits System.Web.Services.WebService <WebMethod()> _ Public Function HelloWorld() As String Return "Hello World" End Function End Class </code></pre> <p>The calling page's markup and script is as follows:</p> <pre><code><%@ Page Language="vb" AutoEventWireup="false" CodeBehind="WebForm1.aspx.vb" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>WebForm1</title> <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <script > $(document).ready(function () { // Add the page method call as an onclick handler for the div. $("#Result").click(function () { $.ajax({ type: "POST", url: "WebService1.asmx/HelloWorld", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", error: function(xhr, status, error) { $("#Result").html("xhr: " + xhr.text + "</br>Status: " + status + "</br>Error: " + error); }, success: function (data) { $("#Result").html(data.d); } }); }); }); </script> </head> <body> <div id="Result">Click here ...</div><br/> <input id="KenID" /> </body> </html> </code></pre> <p>I am not sure what to check to make this simple application work.</p> <p>Will appreciate some hints.</p> <p>Jacek</p>
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<jquery><asp.net><json>
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Error trying to return data from web service using json
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