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PO.ajax call returns undefine in .net?
 

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  1. PO.ajax call returns undefine in .net?
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    <p>I am trying to build vb.net web app by using mongodb as database. App needs consuming web service and return JSON string. which is used as data source for Kendo UI chart.</p> <p>My web service:-</p> <pre><code> Imports MongoDB.Bson Imports MongoDB.Driver Imports MongoDB.Driver.Builders Imports System.Web.Services Imports System.Web.Services.Protocols Imports System.Web.Script.Services 'Imports System.Web.Script.Serialization Imports System.ComponentModel Imports System.IO Imports AjaxControlToolkit ' To allow this Web Service to be called from script, using ASP.NET AJAX,'uncomment the following line. &lt;System.Web.Script.Services.ScriptService()&gt; _ &lt;System.Web.Services.WebService(Namespace:="http://tempuri.org/")&gt; _ &lt;System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)&gt; _ &lt;Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()&gt; _ Public Class WebService_BufferFile Inherits System.Web.Services.WebService Dim connectionString As String = "mongodb://localhost" Dim client = New MongoClient(connectionString) &lt;WebMethod()&gt; _ Public Function BufferFile_Power(ByVal UserId As Integer, ByVal DataBaseName As String, ByVal Collection As String, ByVal FileDate As DateTime, ByVal FileName As String) As String '&lt;ScriptMethod(ResponseFormat:=ResponseFormat.Json, UseHttpGet:=False)&gt; _ 'runner = Mongo2Go.MongoDbRunner.Start() 'runner.Import(strDatabase, strCollection, ImportFilePath, False) 'MongoImportExport.Import("C:\MongoDB\bin\", 27017, strDatabase, strCollection, ImportFilePath, False) Dim ImportFilePath As String = "E:\SCADA\RAW\" &amp; DataBaseName &amp; "\" &amp; Collection &amp; "\" &amp; Format(FileDate, "yyyy") &amp; "\Buffer\" &amp; FileName &amp; "" If File.Exists(ImportFilePath) Then Dim ImportProcess As New Process() ImportProcess.StartInfo.UseShellExecute = True ImportProcess.StartInfo.CreateNoWindow = True ImportProcess.StartInfo.WorkingDirectory = "C:\MongoDB\bin" ImportProcess.StartInfo.FileName = "mongoimport.exe" ImportProcess.StartInfo.Arguments = " --db " &amp; DataBaseName &amp; " --collection " &amp; Collection &amp; "_" &amp; Format(FileDate, "yyMMdd") &amp; "_" &amp; UserId &amp; " --type csv --file " &amp; ImportFilePath &amp; " --headerline" ImportProcess.Start() ImportProcess.WaitForExit(1500) ImportProcess.Dispose() Else Return 0 Exit Function End If Dim server = client.GetServer() Dim database = server.getDatabase(DataBaseName) Dim UserCollection = Collection &amp; "_" &amp; Format(FileDate, "yyMMdd") &amp; "_" &amp; UserId Dim Docs As MongoCursor = database.GetCollection(UserCollection).FindAll() Docs.SetSortOrder(SortBy.Ascending("timestamp")) Docs.SetFields(Fields.Include("timestamp", "converter_UL1", "converter_UL2", "converter_UL3", "converter_I1", "converter_I2", "converter_I3").Exclude("_id")) Docs.SetLimit(3000) Dim JsonString = Docs.ToJson If Docs.Count &gt; 0 Then Docs.Database.DropCollection(UserCollection) End If 'Dim jsonSearializer As New JavaScriptSerializer() 'Return jsonSearializer.Serialize(JsonString) 'Return 234 Return JsonString End Function End Class </code></pre> <p>HTML Page:-</p> <pre><code>&lt;link href="CSS/kendo.common.min.css" rel="stylesheet" /&gt; &lt;link href="CSS/kendo.dataviz.min.css" rel="stylesheet" /&gt; &lt;link href="CSS/kendo.default.min.css" rel="stylesheet" /&gt; &lt;script type="text/javascript"&gt; &lt;/script&gt; &lt;script src="Scripts/jquery-1.7.1.min.js"&gt;&lt;/script&gt; &lt;script src="Scripts/kendo.all.min.js"&gt;&lt;/script&gt; &lt;table border="0" align="center"&gt; &lt;tr&gt; &lt;td class="auto-style1" &gt; &lt;div id="BufferPowerChart" class="k-content"&gt; &lt;div class="PowerChart-wrapper" style="margin: auto;"&gt; &lt;div id="PowerChart"&gt;&lt;/div&gt; &lt;/div&gt; &lt;script&gt; function createPowerChart() { $.ajax( { type: 'POST', url: '/WebService_BufferFile.asmx/BufferFile_Power', contentType: 'application/json; charset=utf-8', dataType: 'json', data: '{"UserId":174,"DataBaseName":"ChitraDurga","Collection":"NSLHK-06","FileDate":"05/05/2013","FileName":"NSLHk-06_b130505_1819.txt"}', async: false, success: OnSuccess, error: OnError }); function OnSuccess(PowerChartData) { alert(PowerChartData.d); var PowerChartDataSource = JSON.parse(PowerChartData.d); $("#PowerChart").kendoChart({ title: { text: "Power" }, legend: { visible: true, position: "bottom" }, dataSource: PowerChartDataSource, series: [{ type: "line", field: "converter_UL1", name: "converter_UL1" }, { type: "line", field: "converter_UL2", name: "converter_UL2" }, { type: "line", field: "converter_UL3", name: "converter_UL3" }, { type: "line", field: "converter_I1", name: "converter_I1" }, { type: "line", field: "converter_I2", name: "converter_I2" }, { type: "line", field: "converter_I3", name: "converter_I3" }], categoryAxis: { field: "timestamp", labels: { rotation: -5 }, majorGridLines: { visible: true } }, valueAxis: { max: 1500, line: { visible: true }, majorUnit:100, minorGridLines: { visible: true } }, tooltip: { visible: true, template: "#= series.name #: #= value #" } }); } function OnError(msg) { alert('Error = ' + msg.d); } } $(document).ready(function () { //debugger; setTimeout(function () { createPowerChart(); }, 500); }); &lt;/script&gt; &lt;style scoped&gt; .PowerChart-wrapper, .PowerChart-wrapper .k-chart { height: 520px; width:850px; } &lt;/style&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>Any help would be appreciated.</p>
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    1. USmadhu_sudhan
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    1. COdoes the OnSuccess function get called?
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      1. PO.ajax call returns undefine in .net?
      1. USMaurizio In denmark
    2. CONo that's the main problem from my case
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      1. PO.ajax call returns undefine in .net?
      1. USmadhu_sudhan
    3. COservice working fine and return JSON string, but .ajax(); fails to understand returned data. need help please...
      singulars
      1. PO.ajax call returns undefine in .net?
      1. USmadhu_sudhan
 

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