How to create dynamic CheckBox and display checked CheckBox row value in TextBox using jQuery in ASP.Net

Hi amit,

I have created a sample that full fill your requirement

HTML

<div align="center">
    <table id="tblCheckBoxLists">
    </table>
    <asp:TextBox ID="txtHobby" runat="server" />
</div>
<div>
<script type="text/javascript">
    $(function () {
        $.ajax({
            type: "POST",
            url: "Default.aspx/GetHobbies",
            data: '{}',
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (r) {
                var table = $("[id*=tblCheckBoxLists]");
                var i = 1;
                table.append("<thead><th>R</th><th>C</th><th>Hobbies</th></thead>");
                $.each(r.d, function () {
                    //debugger;
                    table.append("<tr><td><input id=cbR" + i + " type='checkbox' onclick=CheckedHobby(this) name=cbR" + i + "></></td><td><input id=cbC" + i + " type='checkbox' onclick=CheckedHobby(this) name=cbC" + i + "> </></td><td>" + $(this)[0].Text + "</td></tr>");
                    i++;
                });
            }
        });
    });
    function CheckedHobby(checkbox) {
        if (checkbox.checked) {
            $('[id*=txtHobby]').val($(checkbox).closest('tr').find('td').eq(2)[0].innerHTML);
        }
        else {
            $('[id*=txtHobby]').val('');
        }
    }    
</script>
</div>

PageCode

[WebMethod]
public static List<ListItem> GetHobbies()
{
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    SqlConnection con = new SqlConnection(constr);

    List<ListItem> hobbies = new List<ListItem>();
    string query = "SELECT HobbyId,Hobby FROM Hobbies";
    SqlCommand cmd = new SqlCommand(query, con);
    con.Open();
    cmd.CommandType = CommandType.Text;

    using (SqlDataReader sdr = cmd.ExecuteReader())
    {
        while (sdr.Read())
        {
            hobbies.Add(new ListItem
            {
                Value = sdr["HobbyId"].ToString(),
                Text = sdr["Hobby"].ToString()
            });
        }

    }
    con.Close();
    return hobbies;
}

ScreenShot

Hope this works for you.