Describe two uses of the “using” statement during the operation of C#

The "using" statement in C# is used to import a namespace.

The following coding is coded:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading, Tasks;
using System.Windows. Forms;
using System.Data.OLEDB;

To close a running connection efficiently. The following coding is used:

using System;
using System. Collections.Generic;
using System. ComponentModel;
using System. Data;
using System. Drawing;
using System. Linq;
using System. Text;
using System. Threading, Tasks;
using System. Windows. Forms;
using System. Data. OLEDB;

namespace WindowsFormsApp1
{ 
   public partial class Form1: Form 
    { 
    public Form1() 
    { 
      InitializeComponent(); 
     } 
      private void Form1_Load(object sender, EventArgs e) 
    { 
       String constr = “Provider=Microsoft.ACE.OLEDB.12.0;} + 
        “Data Source=***” + 
         “Jet OLEDB: Database Password=***”; 
        using (OLEDBConnection con = new OLEDBConnection (constr)) 
    { 
       con.Open(); 
        MessageBox.Show(“Connection is Opened!);
      }
     }
   }
 }