Statements that connect to access

Using System;
Using System.Collections.Generic;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Linq;
Using System.Text;
Using System.Windows.Forms;
Using System.Data.OleDb;

Namespace Accesslink
{
public partial class Form1:form
{
OleDbConnection objconnection;
DataSet myds;
int Vrec;
Public Form1 ()
{
InitializeComponent ();
}
private void Linkdb ()
{
string s = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=student.mdb";
objconnection = new OleDbConnection (s);
Objconnection.open ();
}

private void Button1_Click (object sender, EventArgs e)
{
LINKDB ();
String sql = "SELECT * From basic information table";
OleDbDataAdapter mydata = new OleDbDataAdapter (sql, objconnection);
DataSet myds=new DataSet ();
Vrec = MyData. Fill (myDS, "basic information table");
Datagridview1.datasource = myDS. tables["basic information table";
}

private void Datagridview1_cellcontentclick (object sender, DataGridViewCellEventArgs e)
{

}

private void Form1_Load (object sender, EventArgs e)
{

}
}
}