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POjQuery/json read parameters from POST in .NET web service
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copied!<p>I'm having trouble figuring out how to read a json string from a POST coming from jQuery(most articles I've seen show how to send the json, but not how to get it from the POST message received by the web services.</p> <p>This is the code I've written so far.</p> <p>On the client side:</p> <pre><code><input type="text" id="UserNameText" /> <br /> <input type="password" id="PasswordText" /> <br /> <input type="button" id="Login" value="Login" onclick="DoLogin();" /> <script type="text/javascript" language="javascript"> function DoLogin() { var un = document.getElementById('UserNameText').value; var pw = document.getElementById('PasswordText').value; var info = "{ 'UserName':'" + un + "', 'Password':'" + pw + "'}"; $.ajax( { type: "POST", url: "http://localhost:60876/Login.asmx/LoginSpecial", dataType: 'json', data: info, contentType: "application/json; charset=utf-8", success: function (msg) { alert(msg.d); }, error: function (msg) { alert(msg.responseText); } }); } </script> </code></pre> <p>on the server side I've got this:</p> <pre><code>[ScriptMethod(ResponseFormat = ResponseFormat.Json)] [WebMethod] public string LoginSpecial() { // none of these seem to be working NameValueCollection parameters = HttpContext.Current.Request.Params; string p = parameters["QUERY_STRING"] != null ? parameters["QUERY_STRING"].ToString() : String.Empty; string info = HttpContext.Current.Request["info"] != null ? HttpContext.Current.Request["info"].ToString() : String.Empty; string data = HttpContext.Current.Request["data"] != null ? HttpContext.Current.Request["data"].ToString() : String.Empty; // test json string, need to read from the jquery post string json = "{ 'UserName':'test', 'Password':'test'}"; // the following two lines of code work ok with the test json string above. JavaScriptSerializer serial = new JavaScriptSerializer(); Credentials credential = (Credentials)serial.Deserialize(json, typeof(Credentials)); return "Some json message here"; } </code></pre> <p>I've set break points and I'm hitting the web service as expected, I just can't figure out how to get the json string from the POST message.</p>

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