Connection Strings in web.config configuration file (Part - 3)

Connection Strings in web.config configuration file  (Part - 3)

If we have 100 web forms In 1 application Instead of creating every time connection will be stored in web.config file

In an asp.net web application, the configuration strings can be stored in web.config file, as shown below. Give a meaningful name to your connection string. Since we are working with sql server, the provider name is System.Data.SqlClient.

If we have 100 web forms In 1 application Instead of creating every time connection will be stored in web.config file

<connectionStrings>  <add name="DatabaseConnectionString"
        connectionString="data source=.; database=Sample_Test_DB; Integrated Security=SSPI"
        providerName="System.Data.SqlClient" />
<connectionStrings>

Comming to the Visual studio Take an Grid view
Create a name space Like

using System.Configuration;

View Code In C#

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

namespace WebApplication2
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

              string ConnectionString = ConfigurationManager.ConnectionStrings["DatabaseConnectionString"].ConnectionString;
              using (SqlConnection con = new SqlConnection( ConnectionString ))

// Using is forced to close the conncetion so no need to close the conncetion 
                {
                     SqlCommand cmd = new SqlCommand("Select * from tblProductInventory", con);
                     con.Open();
                     GridView1.DataSource = cmd.ExecuteReader();
                     GridView1.DataBind();
                }
        }
         
    }
}