How Do I Search , Close, Insert,Update,Delete, Move Previous And Move Next Record Without Gridview Control..?

public void getdata()
   {



       txteno.Text = ds.Tables[0].Rows[rno][0].ToString();
       txtenme.Text = ds.Tables[0].Rows[rno][1].ToString();
       txtjob.Text = ds.Tables[0].Rows[rno][2].ToString();
       txtloc.Text = ds.Tables[0].Rows[rno][3].ToString();
       txtpno.Text = ds.Tables[0].Rows[rno][4].ToString();

   }


protected void Page_Load(object sender, EventArgs e)
    {
        string scon = ConfigurationManager.ConnectionStrings["scn"].ConnectionString;
        cn = new SqlConnection(scon);
        da = new SqlDataAdapter("select * from emphalf", cn);
        ds = new DataSet();
        da.Fill(ds, "emphalf");
        getdata();
}

protected void btnprev_Click(object sender, EventArgs e)
    {
        if (rno > 0)
        {
            rno -= 1;
            if (ds.Tables[0].Rows[rno].RowState == DataRowState.Deleted)
            {
                // DataRow dr = (DataRow)ds.Tables[0].Rows[ds.Tables[0].Rows.Count - 1];

                Response.Write("deleted row data cannot be accessed");
                return;

            }

            getdata();
        }

        else Response.Write("first record");
    }

protected void btnxt_Click(object sender, EventArgs e)
   {
       if (rno < ds.Tables[0].Rows.Count - 1)
       {
           rno += 1;
           if (ds.Tables[0].Rows[rno].RowState == DataRowState.Deleted)
           {
               Response.Write("deleted row data cannot be accessed");
               return;
           }
           getdata();

       }
       else Response.Write("last record");
    }


protected void btninsert_Click(object sender, EventArgs e)
    {
        DataRow dr = ds.Tables[0].NewRow();

        dr[0] = txteno.Text;
        dr[1] = txtenme.Text;
        dr[2] = txtjob.Text;
        dr[3] = txtloc.Text;
        dr[4] = txtpno.Text;

        ds.Tables[0].Rows.Add(dr);
        rno = ds.Tables[0].Rows.Count - 1;
        Response.Write("data row is added");
        getdata();

    }

protected void btnupdate_Click(object sender, EventArgs e)
   {
       ds.Tables[0].Rows[rno][1] = txtenme.Text;
       ds.Tables[0].Rows[rno][2] = txtjob.Text;
       ds.Tables[0].Rows[rno][3] = txtloc.Text;
       ds.Tables[0].Rows[rno][4] = txtpno.Text;
       Response.Write("data row is updated");
       getdata();


   }
   protected void btndelete_Click(object sender, EventArgs e)
   {
       ds.Tables[0].Rows[rno].Delete();

       Response.Write("data row is deleted");
       getdata();

   }

   protected void btnsave_Click(object sender, EventArgs e)
   {
       cb = new SqlCommandBuilder(da);
       da.Update(ds, "emphalf");

       Response.Write("data is saved to database");
       getdata();
   }