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POUsing JQuery and JSON to consume Asp.net Server-Side Asynchronous Web Methods
 

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  1. POUsing JQuery and JSON to consume Asp.net Server-Side Asynchronous Web Methods
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    <p>I defined two webservices calls in ASP.NET: 1.BeginLengthyProcedure and EndLengthyProcedure (Asynchronous web method) 2.LengthProcedureSync</p> <pre><code>namespace ServiceDemo { [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] [System.Web.Script.Services.ScriptService] public class AsyncWebService : System.Web.Services.WebService { public delegate string LengthyProcedureAsyncStub(int milliseconds); public string LengthyProcedure(int milliseconds) { System.Threading.Thread.Sleep(milliseconds); return "SuccessAsync"; } public class MyState { public object previousState; public LengthyProcedureAsyncStub asyncStub; } [WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public IAsyncResult BeginLengthyProcedure(int milliseconds, AsyncCallback cb, object s) { LengthyProcedureAsyncStub stub = new LengthyProcedureAsyncStub(LengthyProcedure); MyState ms = new MyState(); ms.previousState = s; ms.asyncStub = stub; return stub.BeginInvoke(milliseconds, cb, ms); } [WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public string EndLengthyProcedure(IAsyncResult call) { MyState ms = (MyState)call.AsyncState; string res = ms.asyncStub.EndInvoke(call); return res; } [WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public string LengthyProcedureSync(int milliseconds) { System.Threading.Thread.Sleep(milliseconds); return "SuccessSync"; } } } </code></pre> <p>Then I consumed them using JQuery, I don't want to use ASP.NET AJAX. LengthProcedureSync worked fine, but LenghtyProcudure didn't work. Is there anything I missed?</p> <pre><code>&lt;script type="text/javascript" src="jquery-1.4.4.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; function testJson() { $.ajax({ type: "POST", //Didn't work url: "AsyncWebService.asmx/LengthyProcedure", //Work //url: "AsyncWebService.asmx/LengthyProcedureSync", data: "{'milliseconds':'2000'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (msg) { $("#jsonResponse").html(msg.d); }, error: function (msg) { } }); }; &lt;/script&gt; </code></pre>
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    1. USYuQing Zhang
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      1. VTUpMod
    1. COWere you able to call BeginLengthyProcedure from jQuery and get results from EndLengthyProcedure? How?
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      1. USTony_Henrich
    2. CODid you ever fix this? I'm having the same problem.
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      1. USOverload119
 

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