Unable to connect to .MDB database with ASP.NET C# - asp.net

Question

I'm trying to create a simple user registration system using ASP.NET C# and an MS Access .mdb database. The problem is, whenever I attempt to register, the code fails at the OleDbCommand in the "try" and gets "caught" instead. I have used breakpoints in MS Visual Studio 2012 and all keys are present as far as I can tell. My code follows:
Here is my class where the registration method is located:
public static class DbUtil
{
private static OleDbConnection openConnection()
{
OleDbConnection con = new OleDbConnection();
try
{
string conString = #"Provider=Microsoft.Jet.OLEDB.4.0; Data Source=|DataDirectory|MainDatabase.mdb";
con = new OleDbConnection(conString);
con.Open();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
return con;
}
private static void closeConnection(OleDbConnection con)
{
try
{
con.Close();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public static bool registerUser(string email, string password)
{
try
{
using (OleDbConnection con = openConnection())
{
string sqlString = #"INSERT INTO Users (Email, Password) VALUES (?, ?)";
using (OleDbCommand command = new OleDbCommand(sqlString, con))
{
command.Parameters.AddWithValue("Email", email);
command.Parameters.AddWithValue("Password", password);
command.ExecuteNonQuery();
closeConnection(con);
return true;
}
}
}
catch
{
return false;
}
}
}
Here is where the method is called:
public void btnRegisterSubmit_Click(object sender, EventArgs e)
{
string strEmail = txtRegisterEmail.Text;
string strPassword = txtRegisterPassword.Text;
bool regSuccess = DbUtil.registerUser(strEmail, strPassword);
if (regSuccess == false)
{
Response.Redirect("Default.aspx?reg=fail");
}
else
{
if (regSuccess == true)
{
Response.Redirect("Default.aspx?reg=success");
}
else
{
Response.Redirect("Default.aspx?reg=error");
}
}
}
I'm currently using the praised parameter method, for the first time. I did use a simple concatenation method in the SQL string, but this yielded the same problem.
Also, there are no errors printed or exceptions thrown.
Any help at all would be highly appreciated. Thanks in advance!
UPDATE:
Exception:
System.Data.OleDb.OleDbException (0x80040E14): Syntax error in INSERT INTO statement. at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr) at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) at System.Data.OleDb.OleDbCommand.ExecuteNonQuery() at DbUtil.registerUser(String email, String password) in c:\Users\******\Documents\Visual Studio 2012\WebSites\********************\App_Code\DbUtil.cs:line 51

Answer 1

I'm not using any reserved words
password is indeed a reserved word in Access SQL. The following code fails with
OleDbException was unhandled: Syntax error in INSERT INTO statement.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.OleDb;
namespace oledbTest1
{
class Program
{
static void Main(string[] args)
{
using (var conn = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\__tmp\testData.accdb;"))
{
conn.Open();
using (var cmd = new OleDbCommand(
#"INSERT INTO Users (Email, Password) VALUES (?, ?)",
conn))
{
cmd.Parameters.AddWithValue("?", "gord#example.com");
cmd.Parameters.AddWithValue("?", "myPassword");
cmd.ExecuteNonQuery();
}
conn.Close();
}
Console.WriteLine("Done.");
Console.ReadKey();
}
}
}
If I change the code to...
...
using (var cmd = new OleDbCommand(
#"INSERT INTO Users (Email, [Password]) VALUES (?, ?)",
conn))
{
...
...then it works fine.

Answer 2

Managed to get this fixed. I rewrote the registerUser() method, and removed the using blocks and it now works great. Here's the code with the removed parts commented:
public static bool registerUser(string email, string password)
{
try
{
//using (OleDbConnection con = openConnection())
//{
OleDbConnection con = new OleDbConnection(#"Provider=Microsoft.Jet.OleDb.4.0;Data Source=|DataDirectory|MainDatabase.mdb");
string sqlString = "INSERT INTO [Users] ([Email], [Password]) VALUES (#Email, #Password)";
//using (OleDbCommand command = new OleDbCommand(sqlString, con))
//{
OleDbCommand command = new OleDbCommand(sqlString, con);
command.Parameters.AddWithValue("#Email", email);
command.Parameters.AddWithValue("#Password", password);
con.Open();
command.ExecuteNonQuery();
con.Close();
return true;
//}
//}
}
catch (Exception e)
{
return false;
//System.Diagnostics.Debug.WriteLine(e.Message);
}
}
Thanks for the comments :)