What does “Data Source cannot be empty. Use :memory: to open an in-memory database” mean?

Question

I recently converted my SQL Server database into SQLite DB. But when I try to open my SQLite using .Open() it throws me this error:

Data Source          


        

Answer 1

I had this same error recently when I actually was trying to use the in memory version of SQLite.

I was setting up the connection as follows:

var connection = new SQLiteConnection("Filename=:memory:");
connection.Open();

And getting the error

Data Source cannot be empty. Use :memory: to open an in-memory

I then changed it to this code, note the 'SQL' part is no longer capitalised:

var connection = new SqliteConnection("Filename=:memory:");
connection.Open();

And now it works.

The working, non capitalised version is from the Microsoft.Data.Sqlite.SqliteConnection namespace where as the SQLite version is from System.Data.SQLite.SQLiteConnection (I had version 1.0.113.6 referenced).