Multi-Threaded Bank System?

public class BankAccount
{
private object _lock = new object();
public decimal Balance { get; private set; }
public void Deposit(decimal amount)
{

lock(_lock)

{
Balance += amount;
}
}
public void Withdraw(decimal amount)
{

lock(_lock)

{
if (Balance >= amount)
Balance -= amount;
}
}
}

Ensures thread safety and prevents financial inconsistency.