When button its clicked for the segond time. Its sturk...

namespace LunaOffice

{

public partial class FluxoCaixa : Form

{

public FluxoCaixa()

{

InitializeComponent();

}

OleDbConnection conn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\lunaoffice\lunaoffice\\app_data\office.mdb;Persist Security Info=False");

OleDbCommand comm;

string connstr = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\lunaoffice\lunaoffice\\app_data\office.mdb;Persist Security Info=False";

private void btnGravarFluxoCaixa_Click(object sender, EventArgs e)

{

conn = new OleDbConnection(connstr); // Its sturk here only when I click to edit for the segond time with others datas

comm = new OleDbCommand();

conn.Open();

OleDbParameter s = new OleDbParameter("@s", SqlDbType.VarChar);

OleDbParameter id = new OleDbParameter("@id", SqlDbType.VarChar);

comm.Parameters.Add(s);

comm.Parameters.Add(id);

s.Value = '-';

id.Value = lblId.Text;

comm.Connection = conn;

comm.CommandText = "UPDATE fluxocaixa SET s = ? WHERE (id = ?)";

comm.ExecuteNonQuery();

{

conn.Close();

}