SQLite.net多线程

Question

I'm trying to use SQLite in my WPF Application in multithread mode. I'm beginner in C# and I've read lot of post about SQLite and multithreading but... can't achieve to do what I want...

I have made a backgroundWorker which parse different file and then I want to insert into one Database the result of each file into the database.

I'm using the SQLite.net PCL .

I will not post all the code except if someone ask me, but to make some test I do something like that :

lock (_lock)
{
   using (var test = new SQLiteConnection(new SQLitePlatformWin32(), "test.s3db"))
   {
       test.Insert(new MyClassWhichHaveAllField(){Title="XXX"});
   }
}

_lock is defined as :

public static object _lock = new object();

in my backgroundWorker implementation, so as static members.

Even if I put the lock, I received exception "SQLite.Net.SQLiteException: Could not open database file: recipes.s3db (Misuse)"

I try to add some SQLiteOpenFlags like :

SQLiteOpenFlags.FullMutex

It doesn't change anything.

Thanks you very much...

Answer 1

Shouldn't you be using the SQLiteAsync.cs wrapper for multi-threaded ?

SQliteAsyncConnection and Asynchronous API further down the page.

Answer 2

I answer to my question, because indeed, what I have implemented work well except that in my code I wrote :

static object _lock = new object();

so it was defined as private ...

Thanks you.