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How to create a JSON WebService in c# ASP.Net with a valid JSON output and query with JQuery/Ajax


How to create a JSON WebService in c# ASP.Net with a valid JSON output and query with JQuery/Ajax

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How to create a JSON WebService in c# ASP.Net with a valid JSON output and query with JQuery/Ajax
Tag : chash , By : ciops
Date : November 25 2020, 07:06 PM


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Jquery Ajax Posting json to webservice


Tag : jquery , By : ciops
Date : March 29 2020, 07:55 AM
I hope this helps . You mentioned using json2.js to stringify your data, but the POSTed data appears to be URLEncoded JSON You may have already seen it, but this post about the invalid JSON primitive covers why the JSON is being URLEncoded.
I'd advise against passing a raw, manually-serialized JSON string into your method. ASP.NET is going to automatically JSON deserialize the request's POST data, so if you're manually serializing and sending a JSON string to ASP.NET, you'll actually end up having to JSON serialize your JSON serialized string.
var markers = [{ "position": "128.3657142857143", "markerPosition": "7" },
               { "position": "235.1944023323615", "markerPosition": "19" },
               { "position": "42.5978231292517", "markerPosition": "-3" }];

$.ajax({
    type: "POST",
    url: "/webservices/PodcastService.asmx/CreateMarkers",
    // The key needs to match your method's input parameter (case-sensitive).
    data: JSON.stringify({ Markers: markers }),
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function(data){alert(data);},
    failure: function(errMsg) {
        alert(errMsg);
    }
});
public class Marker
{
  public decimal position { get; set; }
  public int markerPosition { get; set; }
}

[WebMethod]
public string CreateMarkers(List<Marker> Markers)
{
  return "Received " + Markers.Count + " markers.";
}

How do you output a query from a .cfm page using jQuery AJAX in JSON format?


Tag : jquery , By : Morbo
Date : March 29 2020, 07:55 AM
This might help you I am trying to output a query from a .cfm page using jquery with json format. Can someone tell me what I am dong wrong? , ./test.cfm:
   <cfinvoke 
   component="learncf_jquery" 
   method="getAllTeams" 
   returnVariable="getItems">
   </cfinvoke>
   <cfoutput>#SerializeJSON(getItems)#</cfoutput>
<table id="results" cellspacing="0" cellpadding="0">
</table>
    $("#runQuery").click(function () {

        $.ajax({

            type: "GET",
            url: "./test.cfm",
            dataType: "json",
            success: function (resp, textStatus, jqXHR) {
                buildResultsTable(resp);
            },
            error: function (jqXHR, textStatus, errorThrown)
            {
                alert(errorThrown); 
            }
        });

    });


    function buildResultsTable(resp)
    {
        var tmp_html = $("<tr />");
        var j = 0;

            $("#results").html(""); 

            for (var i = 0; i < resp["COLUMNS"].length; i++)
            {
                var tmp_th = $("<th />");   
                tmp_th.text(resp["COLUMNS"][i]);
                tmp_html.append(tmp_th);
            }
            $("#results").append(tmp_html);

            for (j = 0; j < resp["DATA"].length; j++)
            {
                tmp_html = $("<tr />");

                for (var i = 0; i < resp["DATA"][j].length; i++)
                {
                    var tmp_td = $("<td />");   
                    tmp_td.text(resp["DATA"][j][i]);
                    tmp_html.append(tmp_td);
                }
                $("#results").append(tmp_html);
            }

    }

jQuery $.ajax error: Parsing JSON Request failed with valid JSON?


Tag : jquery , By : geo
Date : March 29 2020, 07:55 AM
wish helps you why you have '?callback=?' at the end of url ? is it jsonp? yes then change the dataType:'jsonp'
Edit
$.ajax({
    url: 'localhost:39657/List/' + $(this).val(),
    dataType: "json",
    success: function(json) {
           alert("success");
    },
    error:function(xhr){
        console.log(xhr.responseText);
    }
});
var resp = new HttpResponseMessage();
resp.Headers.Add("Access-Control-Allow-Origin","*");

ASP.NET webservice wish ajax, json, jquery and vb.net


Tag : asp.net , By : user112141
Date : March 29 2020, 07:55 AM
it should still fix some issue The reason for this is no matter how you specify the content-type of your ajax call, ASP.NET sends the request with Content-Type text/xml
A solution to this problem is available at: http://bloggingabout.net/blogs/adelkhalil/archive/2009/08/14/cross-domain-jsonp-with-jquery-call-step-by-step-guide.aspx

jquery ajax json parseerror valid json data


Tag : javascript , By : jamerson
Date : March 29 2020, 07:55 AM
hop of those help? application/json this solve it cant believe i waste 2 hours because of this line. the ajax doesnt cause the error..its in the servlet.
this is the line
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