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Thread: json and jquery gridview problem in binding

  1. #1

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    json and jquery gridview problem in binding

    i have following code in json/jquery/grid connectivity
    Code:
    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="json.aspx.cs" Inherits="LINQ.json" %>
    
    <!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>Untitled Page</title>
        <script type="text/javascript" src="jquery.min.js"></script>
    <script type="text/javascript" src="jquery.min.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
    
            //    function () {
            $.ajax({
                type: "POST",
                contentType: "application/json; charset=utf-8",
                url: "Service1.asmx/BindDatatable",
                async: true,
                cache: false,
                data: "{}",
                dataType: "json",
                success: function (data) {
                    for (var i = 0; i < data.d.length; i++) {
                        $("#gvDetails").append("<tr><td>" + data.d[i].OfficeName + "</td><td>" + data.d[i].City + "</td><td>" + data.d[i].Country + "</td></tr>");
    
                    }
                },
                error: function (result) {
                    alert(result.toString());
                }
            });
    
            $('#btnSearch').click
                                (
                                    function () {
    
                                        var searchtext = $("#txtSearch").val();
    
                                        alert(searchtext);
                                        $.ajax(
                                                    {
                                                        type: "POST",
                                                        url: "Gridview.aspx/BindSearchDatatable",
                                                        //data: "{officename : '"+searchtext+"'}",
                                                        data: JSON.stringify({ officename: searchtext }),
                                                        contentType: "application/json; charset=utf-8",
                                                        dataType: "json",
                                                        async: true,
                                                        cache: false,
                                                        success: function (data) {
    
    
                                                            for (var i = 0; i < data.d.length; i++) {
    
                                                                $("#gvDetails").append("<tr><td>" + data.d[i].OfficeName + "</td><td>" + data.d[i].City + "</td><td>" + data.d[i].Country + "</td></tr>");
                                                            }
                                                        },
                                                        error: function (x, e) {
                                                            alert("The call to the server side failed. " + x.responseText);
                                                        }
                                                    }
                                                );
                                        return false;
                                    }
                                );
    
    
            // }
        });
    
    </script>
    </head>
    <body>
        <form id="form1" runat="server">
        <table>
            <tr>
                <td>
                    <asp:TextBox ID="txtSearch" runat="server"></asp:TextBox>
                </td>
                <td>
                    <asp:Button ID="btnSearch" runat="server" Text="Search" />
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <asp:GridView ID="gvDetails" runat="server">
                        <HeaderStyle BackColor="#DC5807" Font-Bold="true" ForeColor="White" />
                    </asp:GridView>
                </td>
            </tr>
        </table>
        </form>
    </body>
    </html>
    and add webserevice and have following class of webserice
    Code:
      public class Service1 : System.Web.Services.WebService
        {
    
            [WebMethod]
            public string HelloWorld()
            {
                return "Hello World";
            }
    
            [WebMethod]
            public static OfficeDetails[] BindDatatable()
            {
                DataTable dt = new DataTable();
                List<OfficeDetails> details = new List<OfficeDetails>();
    
                dt.Columns.Add("OfficeName", typeof(string));
                dt.Columns.Add("City", typeof(string));
                dt.Columns.Add("Country", typeof(string));
    
                dt.Rows.Add("OfficeName", "Emmaculate");
                dt.Rows.Add("City", "khi");
                dt.Rows.Add("Country", "pak");
                foreach (DataRow dtrow in dt.Rows)
                {
                    OfficeDetails Office = new OfficeDetails();
                    Office.OfficeName = dtrow["OfficeName"].ToString();
                    Office.City = dtrow["City"].ToString();
                    Office.Country = dtrow["Country"].ToString();
                    details.Add(Office);
                }
    
                //using (SqlConnection con = new SqlConnection(@"Data Source=kartikpatel\SQLEXPRESS;Initial Catalog=master;Integrated Security=True"))
                //{
                //    using (SqlCommand cmd = new SqlCommand("select  OfficeName,City,Country from Office", con))
                //    {
                //        con.Open();
                //        SqlDataAdapter da = new SqlDataAdapter(cmd);
                //        da.Fill(dt);
                //        foreach (DataRow dtrow in dt.Rows)
                //        {
                //            OfficeDetails Office = new OfficeDetails();
                //            Office.OfficeName = dtrow["OfficeName"].ToString();
                //            Office.City = dtrow["City"].ToString();
                //            Office.Country = dtrow["Country"].ToString();
                //            details.Add(Office);
                //        }
                //    }
                //}
                return details.ToArray();
    
            }
        }
    and another class
    Code:
       public class OfficeDetails
        {
            public string OfficeName { get; set; }
            public string City { get; set; }
            public string Country { get; set; }
        }

    the only thing i m doing is to bind grid with data return from webserice method

    but wheni execute this code ..it gives me an error in alert box as [object object]
    can any body help me !!




    public class Service1 : System.Web.Services.WebService
    {

    [WebMethod]
    public string HelloWorld()
    {
    return "Hello World";
    }

    [WebMethod]
    public static OfficeDetails[] BindDatatable()
    {
    DataTable dt = new DataTable();
    List<OfficeDetails> details = new List<OfficeDetails>();

    dt.Columns.Add("OfficeName", typeof(string));
    dt.Columns.Add("City", typeof(string));
    dt.Columns.Add("Country", typeof(string));

    dt.Rows.Add("OfficeName", "Emmaculate");
    dt.Rows.Add("City", "khi");
    dt.Rows.Add("Country", "pak");
    foreach (DataRow dtrow in dt.Rows)
    {
    OfficeDetails Office = new OfficeDetails();
    Office.OfficeName = dtrow["OfficeName"].ToString();
    Office.City = dtrow["City"].ToString();
    Office.Country = dtrow["Country"].ToString();
    details.Add(Office);
    }

    //using (SqlConnection con = new SqlConnection(@"Data Source=kartikpatel\SQLEXPRESS;Initial Catalog=master;Integrated Security=True"))
    //{
    // using (SqlCommand cmd = new SqlCommand("select OfficeName,City,Country from Office", con))
    // {
    // con.Open();
    // SqlDataAdapter da = new SqlDataAdapter(cmd);
    // da.Fill(dt);
    // foreach (DataRow dtrow in dt.Rows)
    // {
    // OfficeDetails Office = new OfficeDetails();
    // Office.OfficeName = dtrow["OfficeName"].ToString();
    // Office.City = dtrow["City"].ToString();
    // Office.Country = dtrow["Country"].ToString();
    // details.Add(Office);
    // }
    // }
    //}
    return details.ToArray();

    }
    }
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  2. #2
    Karen Payne MVP kareninstructor's Avatar
    Join Date
    Jun 2008
    Location
    Oregon
    Posts
    6,322

    Re: json and jquery gridview problem in binding

    Hello,

    I am not a C Sharp programmer yet unless I am missing something I do not see you serializing the list to json in BindingDataTable then deserializing to OfficeDetails.

  3. #3

    Thread Starter
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    Re: json and jquery gridview problem in binding

    any one else can particapate in problem resolution!!!

    thanks in advance
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  4. #4
    Karen Payne MVP kareninstructor's Avatar
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    Re: json and jquery gridview problem in binding

    First off sorry about using VB.NET my converter did not convert to C properly

    In the web service I would look at using JSON.NET

    I am a VB.NET developer, if I were to send a record back in our shop we always send a record count and status along with the data i.e.
    Code:
    Imports Newtonsoft.Json
    Public Class OfficeDetailsDataSet
        Public Property returnStatus As DetailsStructure
        Public Sub New()
            returnStatus = New DetailsStructure
        End Sub
        Public Overrides Function ToString() As String
            Return JsonConvert.SerializeObject(Me)
        End Function
    End Class
    Public Class DetailsStructure
        Public Property Status As String
        Public Property RecordCount As Int32
        Public RecordSet As OfficeRecords
        Public Sub New()
            Me.Status = "SUCCESS"
            Me.RecordCount = 1
            RecordSet = New OfficeRecords
        End Sub
    End Class
    Public Class OfficeRecords
        Public Property Record As OfficeDetails()
        Public Sub New()
            '
            ' Simulation: 
            '   Values would come from a DataRow for a real project.
            '   Keeping the database part out allows to concentrate on the json
            Dim Item1 As New OfficeDetails("AAA Office", "Portland", "USA")
            Me.Record = {Item1}
        End Sub
    End Class
    Public Class OfficeDetails
        Public Property OfficeName As String
        Public Property City As String
        Public Property Country As String
        Public Sub New(ByVal OfficeName As String, ByVal City As String, ByVal Country As String)
            Me.OfficeName = OfficeName
            Me.City = City
            Me.Country = Country
        End Sub
    End Class
    usage
    Code:
    Dim MyStruct As New OfficeDetailsDataSet
    Then we use the following to obtain the json string
    Code:
    MyStruct.ToString
    Then the caller has the following
    Code:
    {"returnStatus":{"RecordSet":{"Record":[{"OfficeName":"AAA Office","City":"Portland","Country":"USA"}]},"Status":"SUCCESS","RecordCount":1}}
    Formatted and validated, validator
    Code:
    {
       "returnStatus":{
          "RecordSet":{
             "Record":[
                {
                   "OfficeName":"AAA Office",
                   "City":"Portland",
                   "Country":"USA"
                }
             ]
          },
          "Status":"SUCCESS",
          "RecordCount":1
       }
    }

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