如何在 C# 中检查 LiteDB 数据库文件是否有密码？

Question

I have a number of LiteDB database files. Some of them have password. when I open these files in the application, for those one which have password I will get the Invalid database password exception.

How I can check the database file before opened it to find if it has password protected or not? So I can show an input box to the user to get the password.

I'm using LiteDB in Windows WPF application (C#).

Thanks and sorry for my English. :)

Answer 1

对于 LiteDB v5.0.x 数据文件（更具体地说，v8 数据文件格式），第一个字节用于指示文件是否加密：0 表示未加密，1 表示加密。

Answer 2

there is no direct option to test if a datafile are encrypted or nor. But you can test some header bytes to check if datafile contains hash password (this works for v4).

You can open datafile and tests 20 bytes (start in position 67) - if all bytes are 0 means this datafile has no password.