find a record in access table from C# textbox

Hello,

Sorry if my english is not so good...

I have to do a project called Library, with 3 forms

Form1 is the start form, it has 2 buttons"Register" and "Log in",3 textboxes for the FirstName,LastName,Password of the user(It usses your personal name not some nickname or else).

Press "Register" pop's up Form2.

Form2 is to enter your FirsName,LastName,Adress,School/HighSchool,Grade,Password in text boxes, and 2 buttons "Back" to go back to form1,"Register" to enter the data from text boxe into access table Useri.mdb ,pop's up a messagebox to say that you are registered and it goes back to form1.

The register part i did it...after a hard time searching the web.

In Form1 when you enter data in textboxes and press LOG IN it goes to Form3 but I don't know how to write the code to search in a access table.

I found some sample code's but it's not i'm lookin' for.

private void button2_Click(object sender, EventArgs e)
{

string searchFor="Kan";
int results=0;

DataRow[] retunedRows;

returnedRows=ds1.Tables["Useri"].Select("LastName='")+searchFor + "'");

results = returnedRows.Lenght;


if(result >0)
{

DataRow dr1;
dr1=returnedRows[0];
the code to open FORM3;
}
else
{
MessageBox.Show("You ar not REGISTERED!!!");
}
}

And in form3 i have to do the same code to find book's but in addition i have to display the results in a textbox

The code to enter new records from Form2 is this:

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.IO;
using System.Net.Sockets;
using System.Data.OleDb;






namespace Atestat
{
    

        public partial class Form3 : Form
        {
            public Form3()
            {
                
                InitializeComponent();                
                


            }
           

            private void button1_Click(object sender, EventArgs e)
            {
                System.Data.OleDb.OleDbCommandBuilder cb;
                cb = new System.Data.OleDb.OleDbCommandBuilder(da);
                
                DataRow dRow = ds1.Tables["Utilizatori"].NewRow();

                dRow[0] = textBox1.Text;
                dRow[1] = textBox2.Text;
                dRow[2] = textBox3.Text;
                dRow[4] = comboBox2.Text;
                dRow[5] = textBox4.Text;
                dRow[3] = comboBox1.Text;

                ds1.Tables["Utilizatori"].Rows.Add(dRow);

                MaxRows = MaxRows + 1;
                inc = MaxRows - 1;

                da.Update(ds1, "Utilizatori");
                MessageBox.Show("Ati fost autentificat cu succes!!!\nApasati OK si va puteti autentifica. ");
                this.Close();
            }

            private void button2_Click(object sender, EventArgs e)
            {
                this.Close();
            }

            System.Data.OleDb.OleDbConnection con;
            DataSet ds1;
            System.Data.OleDb.OleDbDataAdapter da;
            int MaxRows = 0;
            int inc = 0;
            private void Form3_Load(object sender, EventArgs e)
            {
                con = new System.Data.OleDb.OleDbConnection();
                ds1 = new DataSet();
                con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=F:\\Atestat\\Utilizatori.mdb";
               
                string sql = "SELECT * From Utilizatori";
                da = new System.Data.OleDb.OleDbDataAdapter(sql, con);
                con.Open();
                da.Fill(ds1, "Utilizatori");
                NavigateRecords();
                con.Close();
                
            }
            private void NavigateRecords()
            {
                DataRow dRow = ds1.Tables["Utilizatori"].Rows[0];

                textBox1.Text = dRow.ItemArray.GetValue(0).ToString();
                textBox2.Text = dRow.ItemArray.GetValue(1).ToString();

                textBox3.Text = dRow.ItemArray.GetValue(2).ToString();
                comboBox1.Text = dRow.ItemArray.GetValue(5).ToString();
                comboBox2.Text = dRow.ItemArray.GetValue(4).ToString();
                textBox4.Text = dRow.ItemArray.GetValue(3).ToString();
                textBox5.Text = dRow.ItemArray.GetValue(3).ToString();
                
                
                
                textBox1.Clear();
                textBox2.Clear();
                textBox3.Clear();
                textBox4.Clear();
                textBox5.Clear();
                comboBox1.Text = "";
                comboBox2.Text = "";




            }

          



        }
     
}