C# - Data Access with ADO.NET

This tutorial show how to write the code connect to SQLServer database using C# Ado.net

Using the Connection Object

<% @Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>

<script language="C#" runat="server" >
void Page_Load(Object src, EventArgs e){
         String conStr = "Data Source=localhost;User Id=sa;
                                          Password=;Initial Catalog=northwind";
         SqlConnection con = new SqlConnection(conStr);

         String sql = "Select employeeid, lastname, firstname From employees";
         SqlDataAdapter adapter = new SqlDataAdapter(sql, con);

         DataSet ds = new DataSet();
         adapter.Fill(ds, "Employees");

         employees.DataSource = ds.Tables["Employees"];

<form runat="server" id=form1 name=form1>
        <asp:DataGrid id="employees" runat="server"></asp:DataGrid>