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POjQuery Ajax POST call does not invoke WCF Service
 

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  1. POjQuery Ajax POST call does not invoke WCF Service
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    <p>I have WCF service in web application and have Ajax client in another web application. In terms of cross-domain issue, I have no problem with GET ajax call, but I have a problem with POST ajax call. I am not sure this is from cross-domain issue though. Anyway, when GET ajax invokes WCF service successfully, but it does not in case of POST ajax invocation.</p> <p>WCF Service</p> <pre><code>[OperationContract] [WebInvoke(Method = "POST", UriTemplate = "UserService/AddUser", BodyStyle = WebMessageBodyStyle.WrappedRequest)] public User AddUser(User input) { var user = input; // Do something business logic return user; } </code></pre> <p>Global.asax in web application that WCF Service resides</p> <pre><code>HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*"); if (HttpContext.Current.Request.HttpMethod == "OPTIONS") { HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST"); HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept"); HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000"); HttpContext.Current.Response.End(); } </code></pre> <p>Ajax code</p> <pre><code>&lt;script type="text/javascript"&gt; $(document).ready(function () { $("#submit").click(function () { $.ajax({ cache: false, type: "POST", async: false, url: "http://localhost:2000/UserService/AddUser", data: { "LoginId" : $("#LoginId").val(), "Name" : $("#Name").val() }, contentType: "application/json; charset=utf-8", dataType: "json", processData: true, success: function (userViewModel) { var user = userViewModel; alert(user); } }); }); }); &lt;/script&gt; </code></pre> <p>I debugged it with developers tool in Chrome browser and I got following message</p> <pre><code>Request URL:http://localhost:2000/UserService/AddUser Request Method:POST Status Code:400 Bad Request Request Headersview source Accept:application/json, text/javascript, */*; q=0.01 Accept-Charset:windows-949,utf-8;q=0.7,*;q=0.3 Accept-Encoding:gzip,deflate,sdch Accept-Language:ko-KR,ko;q=0.8,en-US;q=0.6,en;q=0.4 Connection:keep-alive Content-Length:18 Content-Type:application/json; charset=UTF-8 Host:localhost:2000 Origin:http://localhost:3000 Referer:http://localhost:3000/views/useradd.html User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.77 Safari/535.7 Request Payload LoginId=11&amp;Name=22 Response Headersview source Access-Control-Allow-Origin:* Cache-Control:no-cache, no-store Connection:Close Content-Length:1760 Content-Type:text/html Date:Tue, 14 Feb 2012 05:56:42 GMT Expires:-1 Pragma:no-cache Server:ASP.NET Development Server/10.0.0.0 X-AspNet-Version:4.0.30319 </code></pre> <p>As you see it is 400 Bad Request, this is why I doubted that the problem is related with cross-domain issue. But I am not sure.</p> <p>Can you guess the reason of this problem? Thanks in advance.</p>
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    1. COpossible duplicate of [Problem sending JSON data from JQuery to WCF REST method](http://stackoverflow.com/questions/4875195/problem-sending-json-data-from-jquery-to-wcf-rest-method)
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