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Introduction

In this tip, I am going to write about Expandable table using Ajax post method. I have used Div having name "tblUsers" to append using jQuery Ajax post method.

Let's see further in detail about that.

Background

In this tip, all the users data has been structured in gridview form.

Using Ajax post method, all user's data is retrieved and set to Div using jQuery.

It is very fast and smooth during expansion and there is no need for any other third party DLLs or setups.

Using the Code

I have implemented code here. There is only one page for making an expandable table. It is very easy and fast.

First, create a database named DemoDatabase in your SQL Server and that runs that script in your SQL server (only for this demo purpose, you can integrate your own database in this demo):

  CREATE TABLE [dbo].[Users](
    [id] [int] IDENTITY(1,1) NOT NULL,
    [FirstName] [varchar](50) NULL,
    [LastName] [varchar](50) NULL,
    [UserName] [varchar](50) NULL,
    [Email] [nvarchar](150) NULL,
    [imageURL] [nvarchar](max) NULL,
PRIMARY KEY CLUSTERED 
(
    [id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, _
ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

GO
SET ANSI_PADDING OFF
GO
SET IDENTITY_INSERT [dbo].[Users] ON 

GO
INSERT [dbo].[Users] ([id], [FirstName], [LastName], [UserName], [Email], _
[imageURL]) VALUES (1, N'Nirav', N'Prabtani', N'Nills', _
N'niravjprabtani@gmail.com', N'nirav.jpg')
GO
INSERT [dbo].[Users] ([id], [FirstName], [LastName], [UserName], [Email], _
[imageURL]) VALUES (2, N'Rajan', N'Mrug', N'Raj', _
N'Raj@gmail.com', N'rajan.jpg')
GO
INSERT [dbo].[Users] ([id], [FirstName], [LastName], [UserName], [Email], _
[imageURL]) VALUES (3, N'Rajesh', N'Saradhara', N'Rajesh', _
N'rajesh@yahoo.in', N'rajesh.jpg')
GO
INSERT [dbo].[Users] ([id], [FirstName], [LastName], [UserName], [Email], _
[imageURL]) VALUES (4, N'Dharmendra', N'Pansara', _
N'Dhamo', N'Dhamo@hotmail.com', N'demo.jpg')
GO
SET IDENTITY_INSERT [dbo].[Users] OFF
GO

Now create WebForm IndexTable in your project.

1) IndexTable.aspx

Javascript Code

  <script src="js/jquery%20-1.8.3.min.js" 
type="text/javascript"></script>
    <script type="text/javascript">

        $(document).ready(function () {
        //Call BindUsers function during Page load
            BindUsers();

        });

        //Bind all data to div using ajax Post method
        function BindUsers() {

            $.ajax({
                type: 'POST', // Method type
                url: 'IndexTable.aspx/GetUsers', //Page URL/Function Name 
                data: {}, //Parameters
                contentType: 'application/json',
                dataType: 'json',
                success: function (data) { //Returned data

                    if (data.d.length > 0) { //Check Count of data

                        // Set Div to empty.
                        $("#tblUsers").empty(); 

                      //Create Header of a Tbale
                        $("#tblUsers").append("<tr class='trHead'  
                        ><td class='tdHead'>Firstname</td>
                        <td class='tdHead'>Lastname</td>
                        <td class='tdHead'>Username</td></tr>");

                        //Bind Div in tabular form using For loop

                        for (var i = 0; i < data.d.length; i++) {
                            $("#tblUsers").append("<tr   
                            onclick='ExpandGrid(" + data.d[i].id + ")' >
                            <td class='tdHead'>" + data.d[i].FirstName + "
                            </td><td class='tdHead'>" + data.d[i].LastName + "
                            </td><td class='tdHead'>" + data.d[i].UserName + "
                            </td></tr><tr style='display:none;background-color:#F2F2F2' 
                            id='trExpand" + data.d[i].id + "'><td valign='middle' 
                            align='center' ><img src='Images/" + data.d[i].ImageURL + 
                            "' height='80px' width='50px'></td>
                            <td colspan='2' align='center' valign='middle'>
                            <table><tr><td><input id='txtFirstName" + 
                            data.d[i].id + "' value=" + data.d[i].FirstName + " >
                            </td></tr><td><input id='txtLastName" + 
                            data.d[i].id + "' value=" + data.d[i].LastName + " >
                            </td><tr><td><input id='txtUserName" + data.d[i].id + 
                            "' value=" + data.d[i].UserName + " ></td></tr>
                            <tr><td><input id='txtEmail" + data.d[i].id + "' 
                            value=" + data.d[i].Email + " ></td></tr></table>  
                            </td> </tr>");
                        }
                    }
                },
                error: function (result) { //Call on failure or error

                    alert(result.d);
                }
            });
        }

        //Function for expansion of a table
        function ExpandGrid(id) {

            $("#trExpand" + id).toggle(300);
        }

    </script>

CSS Styles

   <style>
        .trHead
        {
            height: 30px;
            background-color: #c8c8c8;
            color: White;
            font-weight: bold;
        }
        .tdHead
        {
            width: 150px;
            border: 1px solid #c8c8c8;
            height: 30px;
            vertical-align: middle;
            padding-left: 5px;
            cursor: pointer;
        }
        .trExpand
        {
            border: 1px solid #c8c8c8;
        }
    </style>

HTML Code

  <div>
    <%--Div Which has been Binded--%>
        <div id="tblUsers">
        </div>
   </div>

2) IndexTable.aspx.cs

 using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Services;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;

namespace ExpandableTable
{
    public partial class IndexTable : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        // Get All users data

        [WebMethod]
        public static Users[] GetUsers()
        {
            // Create Object of a list
            List<Users> Details = new List<Users>();


            //Select All users data from SQL database
            string SelectUsers = "select * from Users";
            SqlConnection cn = new SqlConnection
            (ConfigurationManager.ConnectionStrings["cs_Users"].ConnectionString);
            SqlCommand cmd = new SqlCommand(SelectUsers, cn);

            cn.Open();
            cmd.ExecuteNonQuery();

            SqlDataAdapter da = new SqlDataAdapter(cmd);
            DataTable dtUsers = new DataTable();

            da.Fill(dtUsers);

            //Insert all users data into LIST
            foreach (DataRow dtrow in dtUsers.Rows)
            {
                Users Dataobj = new Users();
                Dataobj.id = Convert.ToInt32(dtrow["id"]);
                Dataobj.FirstName = dtrow["FirstName"].ToString();
                Dataobj.LastName = dtrow["LastName"].ToString();
                Dataobj.UserName = dtrow["UserName"].ToString();
                Dataobj.Email = dtrow["Email"].ToString();
                Dataobj.ImageURL = dtrow["imageURL"].ToString();
                Details.Add(Dataobj);
            }

            //Return array value to bind data
            return Details.ToArray();
        }

        //Class of users
        public class Users
        {
            public int id { get; set; }
            public string FirstName { get; set; }
            public string LastName { get; set; }
            public string UserName { get; set; }
            public string Email { get; set; }
            public string ImageURL { get; set; }
        }
    }
}

In this manner Div "tblUsers" has been bound using Ajax Post method like Expandable table.

How Does It Work??

When application is started, first of all, jQuery page load method occurs and using Ajax post method WebMethod GetUsers() is called and all users data from database returned in array format using Users class.

We can struct Div using append jQuery syntax.

In this example, there are two <tr> tags that have been initialized in Div, one is visible and the second is invisible using CSS property "display:block".

When Div will bind, it will look like that:

There are four Users, therefore there are four columns in a table.

Now if you click on any column of a table, then the second row which is already invisible is set to visible by calling JavaScript function ExpandGrid():

function ExpandGrid(id) {
            $("#trExpand" + id).toggle(300);
        }

and it will look like...

Points of Interest

I have designed it in a very simple form. You can modify by simply assigning styles or classes.

We can also put up and down arrows for expanding functionality.

We can apply transition effects using jQuery during expansion of table.

History

27^th March 2014: Initial post

Expandable Table like Gridview