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sucheendarnath
540
Please let me know on how to bind the data from wcf service
posted

I need to bind the datasource for JQuery grid from WCF service. The WCF service returns list. The WCF service is as follows. 

I am receiving the below error:

Microsoft JScript runtime error: The remote request to fetch data has failed:  (parsererror) There was an error parsing the JSON data and applying the defined data schema: 'length' is null or not an object

Please let me know on how to bind the data from wcf service. 

 

Below is the code for WCF service

 

namespace InfraApplication

{

    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "SampleService" in code, svc and config file together.

    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]

    public class SampleService : ISampleService

    {

        public void DoWork()

        {

        }

 

        public List<CustomerViewModel> GetSortedCustomers()

        {

            List<CustomerViewModel> cvml = new List<CustomerViewModel>();

            CustomerViewModel cvm = new CustomerViewModel();

            cvm.CompanyName = "ABC Company";

            cvm.ContactName = "Krishna";

            cvml.Add(cvm);

            return cvml;

        }

    }

 

    public class CustomerViewModel

    {

        public string ContactName { get; set; }

        public string CompanyName { get; set; }

    }

}

The WCF service uses webHttpBinding. 
In the client side the code is as below
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="index.aspx.cs" Inherits="InfraApplication.index" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script src="Scripts/jquery.min.js" type="text/javascript"></script>
    <script src="Scripts/jquery-ui.min.js" type="text/javascript"></script>
    <script src="Scripts/jquery-ui.js" type="text/javascript"></script>      
    <script src="Scripts/jquery.tmpl.js" type="text/javascript"></script>
    <script src="Infragistics/js/infragistics.loader.js" type="text/javascript"></script>
    <script type="text/javascript" language="javascript">
        $.ig.loader({
            scriptPath: "/Infragistics/js/",
            cssPath: "/Infragistics/css/",
            resources: "igGrid.*"
        });
        $.ig.loader(function () {
            $("#grid1").igGrid({
                height: 500,
                columns: [
   { headerText: "Company Name", key: "CompanyName", dataType: "string" },
   { headerText: "Contact Name", key: "ContactName", dataType: "string" },    
   ],
                autoGenerateColumns: false,
                dataSource: "/SampleService.svc/GetSortedCustomers",
                responseDataKey: "d",
                features: [
   {
       name: "Paging",
       type: "local",
       pageSize: 10
   },
                    {
                        name: "Filtering",
                        allowFiltering: true,
                        type: "local"
                    }
                ]
            });
        });          
    </script>
    
</head>
<body>    
    <table id="grid1"></table>    
</body>
</html>

 

Parents
  • 19693
    posted

    Hello,

    By looking the code snippet I can guess that the issue in your case is the missing JSON format at the end

    

    dataSource: "/SamplesBrowser/Services/WCFCustomerService.svc/GetSortedCustomers?$format=json",

    But it depends on the realization of ISampleService interface.

    For example in our sample browser we have similar one

    http://samples.infragistics.local/jquery/grid/binding-to-wcf-service

    In your scenario I noticed that you are using similar to our WCFCustomerService.svc which is implementing 

      public interface IWCFCustomerService
        {
            [OperationContract]
            [WebGet(ResponseFormat=WebMessageFormat.Json)]
            List<CustomerViewModel> GetSortedCustomers();
        }

    Using it as datasource I didn't have to set responseDataKey in my HTML sample

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <script type="text/javascript" src="/SamplesBrowser/Scripts/modernizr.min.js"></script>
        <script type="text/javascript" src="/SamplesBrowser/Scripts/jquery.min.js"></script>
        <script type="text/javascript" src="/SamplesBrowser/Scripts/jquery-ui.min.js"></script>
        <script src="http://localhost/ig_ui/js/infragistics.loader.js"></script>
        <script type="text/javascript">
            $.ig.loader({
                scriptPath: "http://localhost/ig_ui/js/",
                cssPath: "http://localhost/ig_ui/css/",
                resources: "igGrid.*"
            });

            $.ig.loader(function () {
                $("#grid1").igGrid({
                    height: 500,
                    columns: [
                           { headerText: "Company Name", key: "CompanyName", dataType: "string" },
                           { headerText: "Contact Name", key: "ContactName", dataType: "string" },
                       ],
                    autoGenerateColumns: false,
                    dataSource: "/SamplesBrowser/Services/WCFCustomerService.svc/GetSortedCustomers?$format=json",
                    // responseDataKey: "d",
                    features: [
                       {
                           name: "Paging",
                           type: "local",
                           pageSize: 10
                       },
                        {
                            name: "Filtering",
                            allowFiltering: true,
                            type: "local"
                        }
                    ]
                });
            });      
        </script>
        <style type="text/css">
            #selection_list
            {
                border: 1px soild;
                width: 600px;
                height: 200px;
                overflow-y: scroll;
                background-color: #EBEBEB;
            }
        </style>
    </head>
    <body>
        <br />
        <table id="grid1">
        </table>
    </body>
    </html>

    I recommend you using the Developer Tools of IE9 or Firebug to check what is the structure of JSON .

    Also you may find this article as helpful:

    http://help.infragistics.com/NetAdvantage/jquery/2012.1?page=igGrid_Getting_Started_With_igGrid_oData_and_WCF_Data_Services.html

    Let us know if you need further assistance

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