I Need Grid View Update Code,Please Anyone Can Help Me I Am Begginner Of C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class admin_driverdetails : System.Web.UI.Page
{

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            pnlControls.Visible = true;
            pnlGrid.Visible = false;
        }
    }
    protected void btnRegister_Click(object sender, EventArgs e)
    {
        DriverInfo driver = new DriverInfo();
        driver.DriverName = txtDriverName.Text;
        driver.Mobile = txtMobile.Text;
        driver.Email = txtEmail.Text;
        driver.LNo = txtLNo.Text;
        driver.LExpDate = DateTime.Parse(txtLExpDate.Text);
        driver.BloodGroup = txtBlood.Text;
        driver.Address = txtAddress.Text;
        driver.DOB = dtpDOB.Text;
        driver.Insert();


    }

    protected void lnkEdit_Click(object sender, EventArgs e)
    {
        pnlControls.Visible = !pnlControls.Visible;
        pnlGrid.Visible = !pnlControls.Visible; ;

        if (pnlControls.Visible)
        {
            lnkEdit.Text = "View / Edit Driver";
        }
        else
        {
            lnkEdit.Text = "Add New Driver";
            LoadDrivers();
        }

    }

    private void LoadDrivers()
    {
        DriverInfo drivers = new DriverInfo();
        var op = drivers.GetAll();
        rptPast.DataSource = op;
        rptPast.DataBind();


    }







    protected void lnkbutEdit_Click(object sender, EventArgs e)
    {
        pnlControls.Visible = !pnlControls.Visible;
        pnlGrid.Visible = !pnlControls.Visible; ;
        var driverId = ((LinkButton)sender).CommandArgument;
        if (pnlControls.Visible)
        {
            lnkEdit.Text = "View / Edit Driver";

            LoadControls(driverId);
        }
        else
        {
            lnkEdit.Text = "Add New Driver";

        }
    }


    private void LoadControls(string driverId)
    {
        DriverInfo drivers = new DriverInfo();
        drivers.DriverId = long.Parse(driverId);
        var op = drivers.Get();


        txtAddress.Text = op.Address;
        txtDriverName.Text = op.DriverName;
        txtMobile.Text = op.Mobile;
        txtEmail.Text = op.Email;
        txtLNo.Text = op.LNo;
        txtBlood.Text = op.BloodGroup;
        dtpDOB.Text = op.DOB;



    }



    protected void lnkbutDelete_Click(object sender, EventArgs e)
    {
        {
            
            var driverId = ((LinkButton)sender).CommandArgument;
           
                LoadDelControls(driverId);
           
        }
    }

    private void LoadDelControls(string driverId)
    {
        DriverInfo drivers = new DriverInfo();
        drivers.DriverId = long.Parse(driverId);
        var op = drivers.Delete();
       
    
        
      
    }


    }

public bool Delete()
   {
       var obj = new DbHelp(spName);
       obj.AddInParameter("@DriverId", DriverId);
       obj.AddInParameter("@mode", "delete");
       var dt = obj.ExecuteNonQuery();
       return dt > 0;
   }