How to totally lock a row in Entity Framework

Question

I am working with a situation where we are dealing with money transactions.

For example, I have a table of users wallets, with their balance in that row.

Answer 1

EF doesn't have built-in locking mechanism, you probably would need to use raw query like

using (var scope = new TransactionScope(...))
{
    using (var context = new YourContext(...))
    {
        var wallet = 
            context.ExecuteStoreQuery("SELECT UserId, WalletId, Balance FROM UserWallets WITH (UPDLOCK) WHERE ...");

        // your logic

        scope.Complete();
    }
}