Hi rani,
Check this example. Now please take its reference and correct your code.
Database
For this example I have used of Northwind database that you can download using the link given below.
Download Northwind Database
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.9/angular.min.js"></script>
<script type="text/javascript">
var app = angular.module('MyApp', []);
app.controller('MyController', function ($scope, $http) {
$http.post("WebService.asmx/GetCustomerOrders", { 'Content-Type': 'application/json' })
.then(function (response) {
$scope.Customers = response.data.d;
}, function error(response) { });
});
</script>
</head>
<body>
<div ng-app="MyApp" ng-controller="MyController">
<table class="table table-responsive">
<thead>
<tr class="success">
<th></th>
<th>Customer Id</th>
<th>Name</th>
<th>Country</th>
</tr>
</thead>
<tbody ng-repeat="customer in Customers">
<tr>
<td>
<button type="button" ng-click="expanded = !expanded" class="btn btn-default">
<span ng-bind="expanded ? '-' : '+'"></span>
</button>
</td>
<td>{{customer.CustomerId}}</td>
<td>{{customer.Name}}</td>
<td>{{customer.Country}}</td>
</tr>
<tr class="sub" ng-show="expanded">
<td></td>
<td colspan="5">
<table class="table table-responsive">
<tr class="info">
<th>Order Id</th>
<th>Freight</th>
<th>Ship City</th>
</tr>
<tr ng-repeat="order in customer.Orders">
<td>{{order.OrderId}}</td>
<td>{{order.Freight}}</td>
<td>{{order.ShipCity}}</td>
</tr>
</table>
</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>
Webservice
C#
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.Web.Services;
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
[System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService
{
[WebMethod]
public List<Customer> GetCustomerOrders()
{
List<Customer> customers = new List<Customer>();
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["constr"].ConnectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
cmd.Connection = con;
con.Open();
cmd.CommandText = "SELECT TOP 5 CustomerId,ContactName,Country FROM Customers ORDER BY ContactName ASC";
SqlDataReader rdr = cmd.ExecuteReader();
while (rdr.Read())
{
Customer customer = new Customer
{
CustomerId = rdr["CustomerId"].ToString(),
Name = rdr["ContactName"].ToString(),
Country = rdr["Country"].ToString(),
Orders = Orders(rdr["CustomerId"].ToString())
};
customers.Add(customer);
}
con.Close();
}
}
return customers;
}
public List<Order> Orders(string customerId)
{
List<Order> orderList = new List<Order>();
using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["constr"].ConnectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
cmd.Connection = con;
con.Open();
cmd.CommandText = "SELECT TOP 3 OrderId,Freight,ShipCity FROM Orders WHERE CustomerId = @CustomerId";
cmd.Parameters.AddWithValue("@CustomerId", customerId);
SqlDataReader rdr = cmd.ExecuteReader();
while (rdr.Read())
{
Order order = new Order
{
OrderId = Convert.ToInt32(rdr["OrderId"]),
Freight = Convert.ToDecimal(rdr["Freight"]),
ShipCity = Convert.ToString(rdr["ShipCity"]),
};
orderList.Add(order);
}
con.Close();
}
}
return orderList;
}
public class Customer
{
public string CustomerId { get; set; }
public string Name { get; set; }
public string Country { get; set; }
public List<Order> Orders { get; set; }
}
public class Order
{
public int OrderId { get; set; }
public decimal Freight { get; set; }
public string ShipCity { get; set; }
}
}
VB.Net
Imports System.Web
Imports System.Collections.Generic
Imports System.Configuration
Imports System.Data.SqlClient
Imports System.Web.Services
' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
<System.Web.Script.Services.ScriptService()> _
<WebService(Namespace:="http://tempuri.org/")> _
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Public Class WebService
Inherits System.Web.Services.WebService
<WebMethod()>
Public Function GetCustomerOrders() As List(Of Customer)
Dim customers As List(Of Customer) = New List(Of Customer)()
Using con As SqlConnection = New SqlConnection(ConfigurationManager.ConnectionStrings("constr").ConnectionString)
Using cmd As SqlCommand = New SqlCommand()
cmd.Connection = con
con.Open()
cmd.CommandText = "SELECT TOP 5 CustomerId,ContactName,Country FROM Customers ORDER BY ContactName ASC"
Dim rdr As SqlDataReader = cmd.ExecuteReader()
While rdr.Read()
Dim customer As Customer = New Customer With {
.CustomerId = rdr("CustomerId").ToString(),
.Name = rdr("ContactName").ToString(),
.Country = rdr("Country").ToString(),
.Orders = Orders(rdr("CustomerId").ToString())
}
customers.Add(customer)
End While
con.Close()
End Using
End Using
Return customers
End Function
Public Function Orders(ByVal customerId As String) As List(Of Order)
Dim orderList As List(Of Order) = New List(Of Order)()
Using con As SqlConnection = New SqlConnection(ConfigurationManager.ConnectionStrings("constr").ConnectionString)
Using cmd As SqlCommand = New SqlCommand()
cmd.Connection = con
con.Open()
cmd.CommandText = "SELECT TOP 3 OrderId,Freight,ShipCity FROM Orders WHERE CustomerId = @CustomerId"
cmd.Parameters.AddWithValue("@CustomerId", customerId)
Dim rdr As SqlDataReader = cmd.ExecuteReader()
While rdr.Read()
Dim order As Order = New Order With {
.OrderId = Convert.ToInt32(rdr("OrderId")),
.Freight = Convert.ToDecimal(rdr("Freight")),
.ShipCity = Convert.ToString(rdr("ShipCity"))
}
orderList.Add(order)
End While
con.Close()
End Using
End Using
Return orderList
End Function
Public Class Customer
Public Property CustomerId As String
Public Property Name As String
Public Property Country As String
Public Property Orders As List(Of Order)
End Class
Public Class Order
Public Property OrderId As Integer
Public Property Freight As Decimal
Public Property ShipCity As String
End Class
End Class
Screenshot
