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Asked: 2026-06-12T11:46:38+00:00

I’m attempting to do a very basic connection to a sqlite v3 database and

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I’m attempting to do a very basic connection to a sqlite v3 database and I’m using monodevelop 3.0 and Mono 2.10 and am unable to get connected to the database. I can make the app create the database, but then it immediately fails attempting to connect to it. Any suggestions? I had started with a different database, but then decided to have my app attempt to create a database empty and then connect to it. This still seems to fail.

SqliteConnection.CreateFile("db\\DataWorksProg.s3db");
SqliteConnection conn = new SqliteConnection("Data Source=file:db\\DataWorksProg.s3db");
conn.Open();

This small piece of code fails with an error about not being able to open the database file.

Mono.Data.Sqlite.SqliteException: Unable to open the database file

Permissions look OK and I have the Sqlite3.dll in the project, and it seems to be working OK. Have I missed anything obvious? I’m pretty good on the Visual Studio side, but still fairly fresh working in a Mono/Monodevelop environment.

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1 Answer

  1. Editorial Team

    Figured out my problem here. Apparently instead of using 

    "Data Source=file:db\\DataWorksProg.s3db"

    I should have been using

    "URI=file:db\\DataWorksProg.s3db"

    Switched to the URI and it works as expected. I had thought from reading the docs that under the 2.0 profile, the DataSource part was needed instead of the URI, but I got the results I’m looking for.

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