form2

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 vjezba_baza
{
    public partial class Form2 : Form
    {
        User odabraniUser;
        OleDbConnection con = new OleDbConnection("Provider=OraOLEDB.Oracle; OLEDB.NET=True; DATA SOURCE = veza1; PERSIST SECURITY INFO=True;USER ID = MHRANJ; PASSWORD = DfhI51aB461");
        public Form2()
        {
            InitializeComponent();
        }
        public Form2(User OdabraniUser)
        {
            InitializeComponent();
            odabraniUser = OdabraniUser;
        }
        private void Form2_Load(object sender, EventArgs e)
        {
            UserIdText.Text = odabraniUser.userID;
            con.Open();
            dataGridView1.Rows.Clear();
            string querry = "select * from PRODUCT where LAGER_VALUE>0";
            OleDbDataAdapter adapter = new OleDbDataAdapter(querry, con);
            DataTable dt = new DataTable();
            adapter.Fill(dt);
            OleDbCommand cmd = new OleDbCommand();
            cmd.ExecuteNonQuery();
            dataGridView1.DataSource = dt;
            con.Close();
        }

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (dataGridView1.Rows.Count > 0)
                NazivTxt.Text = dataGridView1.SelectedRows[0].Cells[1].Value.ToString();
        }

        private void button1_Click(object sender, EventArgs e)
        {

        }
    }
}