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 runat="server">
<title></title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<script type="text/javascript">
var app = angular.module('MyApp', []);
app.controller('MyController', function ($scope, $http) {
$http.post("Default.aspx/GetEmployees", { headers: { 'Content-Type': 'application/json'} })
.then(function (response) {
$scope.Employees = eval(response.data.d);
}, function error(response) {
alert(response.responseText);
});
$scope.Export = function () {
var rows = document.getElementById("tblEmployees").rows;
var data = "";
for (var row = 0; row < rows.length; row++) {
for (var column = 0; column < rows[row].cells.length; column++) {
data += rows[row].cells[column].innerHTML.trim() + ",";
}
data += "\n";
}
if (navigator.msSaveBlob) {
navigator.msSaveBlob(new Blob([data], { type: 'text/csv;charset=utf-8;' }), "Employee.csv");
} else {
var a = document.createElement("a");
a.href = 'data:attachment/csv;charset=utf-8,' + encodeURI(data);
a.target = '_blank';
a.download = 'sample.csv';
document.body.appendChild(a);
a.click();
}
}
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div ng-app="MyApp" ng-controller="MyController">
<table id="tblEmployees">
<thead>
<tr>
<th>Id</th>
<th>Name</th>
<th>City</th>
<th>Country</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="employee in Employees">
<td>{{employee.Id}}</td>
<td>{{employee.Name}}</td>
<td>{{employee.City}}</td>
<td>{{employee.Country}}</td>
</tr>
</tbody>
</table>
<br />
<input type="button" value="Export" ng-click="Export()" />
</div>
</form>
</body>
</html>
Namespaces
C#
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using System.Web.Script.Serialization;
using System.Web.Services;
VB.Net
Imports System.Collections.Generic
Imports System.Configuration
Imports System.Data.SqlClient
Imports System.Web.Script.Serialization
Imports System.Web.Services
Code
C#
[WebMethod]
public static string GetEmployees()
{
List<object> employees = new List<object>();
string sql = "SELECT EmployeeID,FirstName,LastName,City,Country FROM Employees";
using (SqlConnection conn = new SqlConnection())
{
conn.ConnectionString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
using (SqlCommand cmd = new SqlCommand(sql))
{
cmd.Connection = conn;
conn.Open();
using (SqlDataReader sdr = cmd.ExecuteReader())
{
while (sdr.Read())
{
employees.Add(new
{
Id = sdr["EmployeeID"],
Name = sdr["FirstName"] + " " + sdr["LastName"],
City = sdr["City"],
Country = sdr["Country"]
});
}
}
conn.Close();
}
return (new JavaScriptSerializer().Serialize(employees));
}
}
VB.Net
<WebMethod()>
Public Shared Function GetEmployees() As String
Dim employees As List(Of Object) = New List(Of Object)()
Dim sql As String = "SELECT EmployeeID,FirstName,LastName,City,Country FROM Employees"
Using conn As SqlConnection = New SqlConnection()
conn.ConnectionString = ConfigurationManager.ConnectionStrings("constr").ConnectionString
Using cmd As SqlCommand = New SqlCommand(sql)
cmd.Connection = conn
conn.Open()
Using sdr As SqlDataReader = cmd.ExecuteReader()
While sdr.Read()
employees.Add(New With { _
.Id = sdr("EmployeeID"),
.Name = sdr("FirstName") & " " & sdr("LastName"),
.City = sdr("City"),
.Country = sdr("Country")
})
End While
End Using
conn.Close()
End Using
Return (New JavaScriptSerializer().Serialize(employees))
End Using
End Function
Screenshot
