public SqliteStorage(TableInfo table, string filePath = null)
{
_file = filePath ?? Path.GetTempFileName();
_table = table;
_conn = OpenConnection();
string sql = String.Format("create table {0} ({1})", TABLE_NAME, ColumnsText);
_conn.ExecuteNonQuery(sql);
lock (_storageDirectory)
{
_storageDirectory[_file] = this;
}
}