Error after i set MS access a password

[calvinkwoo3000]

My window application run property before i set a password at mdb file.
Below is my connection string that before and after set password

conn = new OleDbConnection ("Provider=Micr osoft.Jet.OLEDB .4.0;Data Source=|DataDir ectory|\\mms.md b;");

conn = new OleDbConnection ("Provider=Micr osoft.Jet.OLEDB .4.0;Data Source=|DataDir ectory|\\mms.md b;Jet OLEDB:Database Password=passwo rd;");

Below is my pageload, and i found that error occure when run until this coding

this.userTableA dapter.Fill(thi s.mmsDataSet.us er);

Can anyone help me or told me what should i do?

thanks.

private void privateProperty Form_Load(objec t sender, EventArgs e)
{
//Get the proccessor serial num for this machine.
SelectQuery query = new SelectQuery("Wi n32_BaseBoard") ;
ManagementObjec tSearcher searcher = new ManagementObjec tSearcher(query );
ManagementObjec tCollection coll = searcher.Get();

String machineID = "";
foreach (ManagementObje ct obj in coll)
machineID = machineID + obj.Properties["SerialNumb er"].Value.ToString ();

ArrayList user = dba.getData("co unter", "license", "id", "1");


if (user.Count == 0)
{
MessageBox.Show ("Error: Database corrupted.");
this.Close();
}
else
{

//Not activated
if (user[0].ToString().Equ als("0"))
{
MessageBox.Show ("This software had not been activated. Please run activation.exe to activate.");
this.Close();
}
else
{

try
{

user = dba.getData("ex piryDate", "license", "id", "1");
string update = webservice.Upda teExpiryDate(db a.getMachineCod e());

int diff = compareDate(Dat eTime.Now, user[0].ToString());
if (diff > 1)
{
// ensure that the machine code match
if (machineID != dba.getMachineC ode())
{
MessageBox.Show ("Error: Machine code mismatch.");
this.Close();
}
for (int j = 1; j < tabControl.TabC ount-1; j++)
{
tabControl.TabP ages[j].Enabled = false;
webBrowser2.Vis ible = false;
}

string services = webservice.Gets ervices(dba.get MachineCode());

//MessageBox.Show (services);
char[] sep = { ',' };
Array a = services.Split( sep);

for (int i = 0; i < a.Length; i++)
{
int j = Convert.ToInt32 (a.GetValue(i)) ;
tabControl.TabP ages[j].Enabled = true;
if (j==19)
{
webBrowser2.Vis ible = true;
}

}

user = dba.getData("us er", "license", "id", "1");
txt_username.Te xt = user[0].ToString();
lbl_welcome.Tex t = "Welcome : " + user[0].ToString();
user = dba.getData("Co ntactNumber", "license", "id", "1");
txt_contact.Tex t = user[0].ToString();
user = dba.getData("Em ail", "license", "id", "1");
txt_email.Text = user[0].ToString();
dba.setLicenseT able("counter", "" + diff);
MessageBox.Show ("You have " + diff + " days left.");
}
else
{
MessageBox.Show ("Your software had expired. Please reactivate.");
this.Close();
}
}
catch (Exception err)
{
MessageBox.Show ("Error: Database corrupted." + err);
this.Close();
}
}
}

this.userTableA dapter.Fill(thi s.mmsDataSet.us er);

}