How to edit,delete data in datagridview using edit,delete link in datagrid

I have write this code for enable the edit & delete link in datagirdview but how can i edit & delete the data using these links.Please any help

public partial class datagridview : Form
    {
        public datagridview()
        {
            InitializeComponent();
        }

        private void datagridview_Load(object sender, EventArgs e)
        {
            displayDataGridView();

            DataGridViewLinkColumn Editlink = new DataGridViewLinkColumn();
            Editlink.UseColumnTextForLinkValue = true;
            Editlink.HeaderText = "Edit";
            Editlink.DataPropertyName = "lnkColumn";
            Editlink.LinkBehavior = LinkBehavior.SystemDefault;
            Editlink.Text = "Edit";
            dataGridView1.Columns.Add(Editlink);

            DataGridViewLinkColumn Deletelink = new DataGridViewLinkColumn();
            Deletelink.UseColumnTextForLinkValue = true;
            Deletelink.HeaderText = "delete";
            Deletelink.DataPropertyName = "lnkColumn";
            Deletelink.LinkBehavior = LinkBehavior.SystemDefault;
            Deletelink.Text = "Delete";
            dataGridView1.Columns.Add(Deletelink);

        }
        public void displayDataGridView()
        {


            OleDbConnection con = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=E:\\Maria.accdb");
            {
                OleDbCommand cmd;
                cmd = new OleDbCommand("select * from new", con);
                cmd.CommandType = CommandType.Text;
                OleDbDataAdapter da = new OleDbDataAdapter(cmd);
                DataSet ds = new DataSet();
                da.Fill(ds);
                dataGridView1.DataSource = ds.Tables[0];

                dataGridView1.AutoGenerateColumns = false;
                dataGridView1.AllowUserToAddRows = false;
                int i = 1;
                foreach (DataGridViewRow row in dataGridView1.Rows)
                {
                    row.Cells["Employee_Id"].Value = i;
                    i++;
                }


            }