I am a noob playing around with basic read, write and delete queries through C# into a MySQL Database. I am however stuck at the initial reading part. It appears that while reading the data from MySQL into a Data Grid View goes fine, however upon attempting to refresh the data it keeps populating the Grid with the same data (See photo) Unsure if this is originating from the Data Grid or the MySQL Dataset.
public partial class CBMain : Form
{
Connection con = new Connection();
private static ArrayList Listid = new ArrayList();
private static ArrayList ListItem = new ArrayList();
private static ArrayList ListDescription = new ArrayList();
private static ArrayList ListSerial = new ArrayList();
private static ArrayList ListQuantity = new ArrayList();
public CBMain()
{
InitializeComponent();
}
private void GetData()
{
try
{
con.Open();
string query = "select id, Item, Description, Serial, QuantityIn from TB_CB_StockIn";
MySqlDataReader row;
row = con.ExecuteReader(query);
if (row.HasRows)
{
while (row.Read())
{
Listid.Add(row["id"].ToString());
ListItem.Add(row["Item"].ToString());
ListDescription.Add(row["Description"].ToString());
ListSerial.Add(row["Serial"].ToString());
ListQuantity.Add(row["QuantityIn"].ToString());
}
}
else
{
MessageBox.Show("Data not found");
}
con.Close();
}
catch (Exception err)
{
MessageBox.Show(err.ToString());
}
}
private void updateDatagrid()
{
for (int i = 0; i < Listid.Count; i++)
{
DataGridViewRow newRow = new DataGridViewRow();
newRow.CreateCells(DGV_Stock);
newRow.Cells[0].Value = Listid[i];
newRow.Cells[1].Value = ListItem[i];
newRow.Cells[2].Value = ListDescription[i];
newRow.Cells[3].Value = ListSerial[i];
newRow.Cells[4].Value = ListQuantity[i];
DGV_Stock.Rows.Add(newRow);
}
}
private void BT_Refresh_Click(object sender, EventArgs e)
{
DGV_Stock.DataSource = null;
DGV_Stock.Rows.Clear();
DGV_Stock.Refresh();
GetData();
if (Listid.Count > 0)
{
updateDatagrid();
}
else
{
MessageBox.Show("Data not found");
}
}
}
Connection :
class Connection
{
MySql.Data.MySqlClient.MySqlConnection conn;
static string host = "*******";
static string database = "*******";
static string userDB = "*******";
static string password = "*******";
public static string strProvider = "server=" + host + ";Database=" + database + ";User ID=" + userDB + ";Password=" + password;
public bool Open()
{
try
{
strProvider = "server=" + host + ";Database=" + database + ";User ID=" + userDB + ";Password=" + password;
conn = new MySqlConnection(strProvider);
conn.Open();
return true;
}
catch (Exception er)
{
MessageBox.Show("Connection Error ! " + er.Message, "Information");
}
return false;
}
public void Close()
{
conn.Close();
conn.Dispose();
}
public DataSet ExecuteDataSet(string sql)
{
try
{
DataSet ds = new DataSet();
MySqlDataAdapter da = new MySqlDataAdapter(sql, conn);
da.Fill(ds, "result");
return ds;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return null;
}
public MySqlDataReader ExecuteReader(string sql)
{
try
{
MySqlDataReader reader;
MySqlCommand cmd = new MySqlCommand(sql, conn);
reader = cmd.ExecuteReader();
return reader;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return null;
}
public int ExecuteNonQuery(string sql)
{
try
{
int affected;
MySqlTransaction mytransaction = conn.BeginTransaction();
MySqlCommand cmd = conn.CreateCommand();
cmd.CommandText = sql;
affected = cmd.ExecuteNonQuery();
mytransaction.Commit();
return affected;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
return -1;
}
}
Initial Data Read in Red, then after Refresh keeps populating
You never clear arraylist data so it will appear multiple times your click. My suggestion you should learn how to use arraylist.
Anyway, you should use only one arraylist and create object class instead to store those fields.
Related
Backgournd
I am currently working on a project which will need me to create a local .dbf file which I must then populate with a value. I am currently able to create a .dbf file in a test dir and adding a column to it, however when I later try to add a value to the column, it errors out.
Problem
I am currently not able to write to the column Public in the .dbf file which I created. When the code goes into ExecuteNonQuery();, it an error and is caught in my catch statement.
Working code
public static bool CreateDBF()
{
try
{
string dbfDirectory = #"c:\Users\me\Desktop\New911";
string connectionString = "Provider=VFPOLEDB;Data Source=" + dbfDirectory;
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
connection.Open();
OleDbCommand command = connection.CreateCommand();
command.CommandText = "create table CustomProperties(Public C(60))";
command.ExecuteNonQuery();
connection.Close();
InsertDataIntoDBF(dbfDirectory + "\\CustomProperties.DBF");
}
return true;
}
catch (Exception ex)
{
throw;
}
}
Working Code - appendix:
The above block of code successfully create the .dbf file with the column which I want as the following image will show
Not working code:
public static bool InsertDataIntoDBF(string path)
{
try
{
string strLogConnectionString = "Provider=VFPOLEDB;Data Source=" + path + ";Collating Sequence=machine;Mode=ReadWrite;";
string query = #"INSERT INTO CustomProperties (Public)";
using (OleDbConnection connection = new OleDbConnection(strLogConnectionString))
{
OleDbCommand command = new OleDbCommand(query, connection);
command.Parameters.AddWithValue("#Public", "True");
connection.Open();
new OleDbCommand("set null off", connection).ExecuteNonQuery();
command.ExecuteNonQuery();
connection.Close();
}
return true;
}
catch (Exception ex)
{
throw;
}
}
Updated code blocks
Working block:
public static bool CreateDBF()
{
try
{
string dbfDirectory = #"c:\Users\er4505\Desktop\New911";
string connectionString = "Provider=VFPOLEDB;Data Source=" + dbfDirectory;
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
connection.Open();
OleDbCommand command = connection.CreateCommand();
command.CommandText = "create table CustomProperties(Public C(60))";
command.ExecuteNonQuery();
connection.Close();
}
InsertDataIntoDBF(dbfDirectory + "\\CustomProperties.DBF");
return true;
}
catch (Exception ex)
{
string viewError = JsonConvert.SerializeObject(ex);
return false; << I have a breakpoint here
}
}
Non-working block:
public static bool InsertDataIntoDBF(string path)
{
try
{
string strLogConnectionString = "Provider=VFPOLEDB;Data Source=" + path + ";Collating Sequence=machine;Mode=ReadWrite;";
string query = #"INSERT INTO CustomProperties (Public) VALUES (#Public)";
using (OleDbConnection connection = new OleDbConnection(strLogConnectionString))
{
OleDbCommand command = new OleDbCommand(query, connection);
command.Parameters.AddWithValue("#Public", "True");
connection.Open();
command.ExecuteNonQuery();
connection.Close();
}
return true;
}
catch (Exception ex)
{
string viewError = JsonConvert.SerializeObject(ex);
return false; << breakpoint here
}
}
Error caught:
oledbErrors
Message: Syntax error.
NativeError: 0
Source: Microsoft OLE DB Provider for Visual FoxPro
ClassName: System.Data.OleDb.OleDbException
Message: Syntax error.
This works for me. Try it
static void Main(string[] args)
{
try
{
CreateDBF();
Console.WriteLine(ReadDB());
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
private static string dbfDirectory = #"c:\Test\dbTest";
private static string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + dbfDirectory + ";Extended Properties = dBase IV";
public static bool CreateDBF()
{
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
connection.Open();
OleDbCommand command = connection.CreateCommand();
command.CommandText = "Create Table CustomProperties ([Public] char(50))";
command.ExecuteNonQuery();
connection.Close();
}
InsertDataIntoDBF(dbfDirectory + "\\CustomProperties.DBF");
return true;
}
public static bool InsertDataIntoDBF(string path)
{
string query = #"INSERT INTO CustomProperties ([Public]) VALUES (#Public)";
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
OleDbCommand command = new OleDbCommand(query, connection);
command.Parameters.AddWithValue("#Public", "True");
connection.Open();
command.ExecuteNonQuery();
connection.Close();
}
return true;
}
public static string ReadDB()
{
string res = string.Empty;
string query = #"SELECT * FROM CustomProperties";
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
OleDbCommand command = new OleDbCommand(query, connection);
command.Parameters.AddWithValue("#Public", "True");
connection.Open();
res = (string)command.ExecuteScalar();
connection.Close();
}
return res;
}
The error was purely syntax, and I was guided by a really good example which I found in the following link
https://social.msdn.microsoft.com/Forums/en-US/24eac4c5-3a4d-43f4-8607-ef684919c4af/command-contains-unrecognized-phrasekeyword-vbnet?forum=visualfoxprogeneral
Working Code Blocks
public static bool CreateDBF()
{
try
{
string dbfDirectory = #"c:\Users\er4505\Desktop\New911";
string connectionString = "Provider=VFPOLEDB;Data Source=" + dbfDirectory;
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
connection.Open();
OleDbCommand command = connection.CreateCommand();
command.CommandText = "create table CustomProperties(Public C(60))";
command.ExecuteNonQuery();
connection.Close();
}
InsertDataIntoDBF(dbfDirectory + "\\CustomProperties.DBF");
return true;
}
catch (Exception ex)
{
string viewError = JsonConvert.SerializeObject(ex);
return false;
}
}
public static bool InsertDataIntoDBF(string path)
{
try
{
string strLogConnectionString = "Provider=VFPOLEDB;Data Source=" + path + ";Collating Sequence=machine;Mode=ReadWrite;";
string query = "INSERT INTO CustomProperties(Public) VALUES (?)";
using (OleDbConnection connection = new OleDbConnection(strLogConnectionString))
{
connection.Open();
OleDbCommand cmdInit = new OleDbCommand("set null off", connection);
cmdInit.ExecuteNonQuery();
OleDbCommand command = new OleDbCommand(query, connection);
OleDbParameter publicStatus = command.Parameters.Add("Public", OleDbType.Char);
publicStatus.Value = "True";
command.ExecuteNonQuery();
connection.Close();
}
return true;
}
catch (Exception ex)
{
log4net.LogManager.GetLogger("EmailLogger").Error(JsonConvert.SerializeObject(ex));
string viewError = JsonConvert.SerializeObject(ex);
return false;
}
}
public static bool CreateDBF()
{
...
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
...
}
InsertDataIntoDBF(dbfDirectory + "\\CustomProperties.DBF"); // change 1
return true;
}
catch (Exception)
{
throw; //change2
}
}
public static bool InsertDataIntoDBF(string path)
{
try
{
...
}
catch (Exception)
{
throw; //change 3
}
}
I'm having a problem making a loginform with sqlite in C#. this is the code
SQLiteConnection connectionstring;
connectionstring = " Data Source = C:\Crystal Management\Crystal Management\bin\Debug\Konaku.db; Version = 3 ";
public void LoadData()
{
try
{
SQLiteCommand SelectCommand = new SQLiteCommand("SELECT `Username`, `Password` FROM `LoginData` WHERE `Username` = '" + flatTextBox1.Text + "' AND `Password` = '" + flatTextBox2.Text + "'", connectionstring);
SQLiteDataReader myReader;
connectionstring.Open();
myReader = SelectCommand.ExecuteReader();
int count = 0;
while (myReader.Read())
{
count = count + 1;
}
if (count == 1)
{
Base bs = new Base();
bs.Show();
this.Hide();
connectionstring.Close();
}
else if (count == 0)
{
flatAlertBox1.kind = FlatUI.FlatAlertBox._Kind.Error;
flatAlertBox1.Text = "data not right";
connectionstring.Close();
}
else
{
}
}
catch (Exception ex) {
MessageBox.Show(ex.Message);
connectionstring.Close();
}
}
it is showing error in this line of code
connectionstring = " Data Source = C:\\Crystal Management\\Crystal Management\bin\\Debug\\Konaku.db; Version = 3 ";
message error is : Cannot implicitly convert type 'string' to 'Finisar.SQLite.SQLiteConnection'
what can I do with this?
This is the proper way to query SQL. Always use "using" for disposable class like SQLiteConnection, SQLiteCommand, and SQLiteDataReader. Use parameterized queries to avoid sql injection.
public void LoadData()
{
try
{
using (var conn = new SQLiteConnection(#"Data Source=C:\Crystal Management\Crystal Management\bin\Debug\Konaku.db;Version=3"))
{
conn.Open();
using (var cmd = new SQLiteCommand("SELECT Username,Password FROM LoginData WHERE Username='#username' AND Password = '#password'", conn))
{
cmd.Parameters.AddWithValue("#username", flatTextBox1.Text);
cmd.Parameters.AddWithValue("#password", flatTextBox2.Text);
using (var reader = cmd.ExecuteReader())
{
var count = 0;
while (reader.Read())
{
count = count + 1;
}
if (count == 1)
{
Base bs = new Base();
bs.Show();
Hide();
}
else if (count == 0)
{
flatAlertBox1.kind = FlatUI.FlatAlertBox._Kind.Error;
flatAlertBox1.Text = "data not right";
}
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
It should be like this
sql_con = new SQLiteConnection
("Data Source=C:\Crystal Management\Crystal Management\bin\Debug\Konaku.db;Version=3;New=False;Compress=True;");
I'm working on MySql 5.6.
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using MySql.Data.MySqlClient;
namespace MySqlRank
{
class Sql
{
private MySqlConnection connection;
private string server;
private string database;
private string uid;
private string password;
//Constructor
public Sql()
{
Initialize();
}
//Initialize values
private void Initialize()
{
server = "localhost";
database = "db";
uid = "root";
password = "pass";
string connectionString;
connectionString = "SERVER=" + server + ";" + "DATABASE=" + database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";";
connection = new MySqlConnection(connectionString);
}
//open connection to database
private bool OpenConnection()
{
try
{
connection.Open();
return true;
}
catch (MySqlException ex)
{
switch (ex.Number)
{
case 0:
Console.WriteLine("Cannot connect to server. Contact administrator");
break;
case 1045:
Console.WriteLine("Invalid username/password, please try again");
break;
}
return false;
}
}
private bool CloseConnection()
{
try
{
connection.Close();
return true;
}
catch (MySqlException ex)
{
Console.WriteLine(ex.Message);
return false;
}
}
//Insert statement
public void Successful(ulong Id)
{
//if(NotCreated)
{
string query = "INSERT INTO rank(id, trades) VALUES('" + Id + "', '1')";
//open connection
if (this.OpenConnection() == true)
{
//create command and assign the query and connection from the constructor
MySqlCommand cmd = new MySqlCommand(query, connection);
//Execute command
cmd.ExecuteNonQuery();
//close connection
this.CloseConnection();
}
}
//else if (created)
{
string query = "UPDATE rank SET trades='1' WHERE id='" + Id + "'";
//Open connection
if (this.OpenConnection() == true)
{
MySqlCommand cmd = new MySqlCommand();
cmd.CommandText = query;
cmd.Connection = connection;
//Execute query
cmd.ExecuteNonQuery();
//close connection
this.CloseConnection();
}
}
}
//Delete statement
public void Delete(ulong Id)
{
string query = "DELETE FROM rank WHERE id='"+ Id +"'";
if (this.OpenConnection() == true)
{
MySqlCommand cmd = new MySqlCommand(query, connection);
cmd.ExecuteNonQuery();
this.CloseConnection();
}
}
//Select statement
public List<string>[] Select()
{
string query = "SELECT * FROM rank";
//Create a list to store the result
List<string>[] list = new List<string>[3];
list[0] = new List<string>();
list[1] = new List<string>();
//Open connection
if (this.OpenConnection() == true)
{
//Create Command
MySqlCommand cmd = new MySqlCommand(query, connection);
//Create a data reader and Execute the command
MySqlDataReader dataReader = cmd.ExecuteReader();
//Read the data and store them in the list
while (dataReader.Read())
{
list[0].Add(dataReader["id"] + "");
list[1].Add(dataReader["trades"] + "");
}
//close Data Reader
dataReader.Close();
//close Connection
this.CloseConnection();
//return list to be displayed
return list;
}
else
{
return list;
}
}
}
}
My question on successful void.I try try-cath method but this isn't work.(Id is Unique Key).Afaik i'm need select method but i can't.My table name is rank(id, trade).I'm need if created update trades +1.if not created,create a new user.I'm only need check created or not created.
If I understand your question correct you want to check if the row already exist in your table? If so you can in your catch statement check for primary key violation:
catch(MySqlException ex)
{
this.CloseConnection();
if(ex.Number == 1067)
{
//Handle exception
}
}
EDIT: After testing your code on my own machine I found out that there is nothing wrong with this.OpenConnection(). And my code ran successfully. Are you sure that the credentials given to the connectionString are valid?
I Planned to insert image in database. But there is some problem while inserting i.e (image format : input string was not in correct format). Please help me . Thanks in advance.
Error comes in this line -> int count = cmd.ExecuteNonQuery();
I have created the database with img (column name) Blob (datatype).
public partial class check1 : System.Web.UI.Page
{
MySqlConnection con = new MySqlConnection("server=localhost; database=esample; uid=root;");
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGridData();
}
}
protected void btnupload_Click(object sender, EventArgs e)
{
if (fileupload.HasFile)
{
int length = fileupload.PostedFile.ContentLength;
byte[] imgbyte = new byte[length];
HttpPostedFile img = fileupload.PostedFile;
img.InputStream.Read(imgbyte, 0, length);
string imagename = imgname.Text;
con.Open();
MySqlCommand cmd = new MySqlCommand("INSERT INTO brand (imgname,img) VALUES (#imagename,#imagedata)", con);
cmd.Parameters.Add("#imagename", SqlDbType.VarChar).Value = imagename;
cmd.Parameters.Add("#imagedata", SqlDbType.Blob).Value = imgbyte;
int count = cmd.ExecuteNonQuery();
con.Close();
if(count==1)
{
BindGridData();
imgname.Text = string.Empty;
ScriptManager.RegisterStartupScript(this, this.GetType(), "alertmessage", "javascript:alert('" + imagename + " image inserted successfully')", true);
}
}
}
private void BindGridData()
{
MySqlConnection con = new MySqlConnection("server=localhost; database=esample; uid=root;");
MySqlCommand command = new MySqlCommand("SELECT imgname,img,bid from brand", con);
MySqlDataAdapter daimages = new MySqlDataAdapter(command);
DataTable dt = new DataTable();
daimages.Fill(dt);
gvImages.DataSource = dt;
gvImages.DataBind();
gvImages.Attributes.Add("bordercolor", "black");
}
}
Using a class named Player with the id, name and photo values.
public static bool createUser(Player player)
{
MySqlCommand cmd = new MySqlCommand("INSERT INTO tbuser (id,sName,lbFoto) VALUES (#id,#name,#foto)", dbConnection);
cmd.Parameters.AddWithValue("#id", player.id).DbType = DbType.Int32;
cmd.Parameters.AddWithValue("#name", player.Name).DbType = DbType.String;
cmd.Parameters.AddWithValue("#foto", player.Image).DbType = DbType.Binary;
try
{
if (dbConnection.State == ConnectionState.Closed)
dbConnection.Open();
cmd.ExecuteNonQuery();
dbConnection.Close();
return true;
}
}
catch { }
finaly
{
if (dbConnection.State == ConnectionState.Open)
dbConnection.Close();
}
return false;
}
Then for retrieval the data:
public static Player loadUser(string ID)
{
var table = Select(dbConnection, "tbuser", "id = " + ID);
Player player = new Player();
foreach (DataRow row in table.Rows)
{
player.id = (int)row[0];
player.Name = row[1].ToString();
player.Image = (byte[])row[2];
return player;
}
return null;
}
The function Select. This is an extra ;)
public static DataTable Select(MySqlConnection con, string tableName, string expressionWhere)
{
string text = string.Format("SELECT * FROM {0} WHERE {1};", tableName, expressionWhere);
MySqlDataAdapter cmd = new MySqlDataAdapter(text, con);
DataTable table = new DataTable();
if (con.State == ConnectionState.Closed)
con.Open();
try
{
cmd.Fill(table);
}
catch (Exception){}
finally
{
if (con.State == ConnectionState.Open)
con.Close();
}
return table;
}
I'm getting an This Table already exists error from Visual Studio 2012. I checked it in MySqlWorkbench and the Xampp Directory, but I didn't find anything. I've even tried it with DROP TABLE IF EXISTS tablename; but this doesn't work either.
public class DBConnect
{
private MySqlConnection connection;
private string server;
private string database;
private string uid;
private string password;
//Constructor
public DBConnect()
{
Initialize();
}
//Initialize values
private void Initialize()
{
server = "localhost";
database = "";
uid = "root";
password = "";
string connectionString;
connectionString = "SERVER=" + server + ";" + "DATABASE=" +
database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";";
connection = new MySqlConnection(connectionString);
connection.Dispose();
CreateDatabase(" DROP DATABASE IF EXISTS boerswatch; CREATE DATABASE boerswatch;");
server = "localhost";
database = "boerswatch";
uid = "root";
password = "";
string connectionString1;
connectionString1 = "SERVER=" + server + ";" + "DATABASE=" +
database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";";
connection = new MySqlConnection(connectionString1);
}
//open connection to database
private bool OpenConnection()
{
try
{
connection.Open();
return true;
}
catch (MySqlException e)
{
switch (e.Number)
{
case 0:
MessageBox.Show("Keine Verbindung zum Server Möglich!");
break;
case 1045:
MessageBox.Show("Ungültiger Benutzername oder Passwort!");
break;
}
return false;
}
}
//Close connection
private bool CloseConnection()
{
try
{
connection.Close();
return true;
}
catch (MySqlException e)
{
MessageBox.Show(e.Message);
return false;
}
}
public void CreateDatabase(String query)
{
if (OpenConnection())
{
try
{
MySqlCommand cmd = new MySqlCommand(query, connection);
cmd.ExecuteNonQuery();
CloseConnection();
}
catch (MySqlException e)
{
MessageBox.Show(e.Message);
}
}
}
public void CreateTable(String query)
{
if (OpenConnection())
{
try
{
MySqlCommand cmd = new MySqlCommand(query, connection);
cmd.ExecuteNonQuery();
CloseConnection();
}
catch (MySqlException e)
{
MessageBox.Show(e.Message);
}
}
}
public void Insert(String query)
{
if (this.OpenConnection())
{
MySqlCommand cmd = new MySqlCommand(query, connection);
cmd.ExecuteNonQuery();
this.CloseConnection();
}
}
}
public partial class Form1 : Form
{
static XmlSerializer serializer;
static FileStream stream;
public List<Bank> banks;
public List<Object> pers;
public DBConnect data;
public Form1()
{
InitializeComponent();
checkFiles();
}
private void checkFiles()
{
String user = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
banks = new List<Bank>(5);
if (!Directory.Exists(#"C:\xampp\mysql\data\boerswatch") )
{
data = new DBConnect();
createBanks();
}
else
{
//loadBanks();
//loadAccounts(pers);
}
}
public void createBanks()
{
Bank b1 = new Bank("Raiffeisen");
Bank b2 = new Bank("Erste Bank");
Bank b3 = new Bank("BAWAG");
banks.Add(b1);
banks.Add(b2);
banks.Add(b3);
data.CreateTable("DROP TABLE IF EXISTS Banken; CREATE TABLE Banken( name VARCHAR(20) PRIMARY KEY);");
data.Insert("INSERT INTO Banken VALUES(" + b1.Name + ");");
data.Insert("INSERT INTO Banken VALUES(" + b2.Name + ");");
data.Insert("INSERT INTO Banken VALUES(" + b3.Name + ");");
listBox1.DataSource = banks;
}
}