Question

I’m using the following code (System.Data.SQLite within VB.net):

        Dim SQLconnect As New SQLite.SQLiteConnection()
        Dim SQLcommand As SQLiteCommand
        SQLconnect.ConnectionString = "Data Source=vault.db;"
        SQLconnect.Open()
        SQLcommand = SQLconnect.CreateCommand
        SQLcommand.CommandText = "INSERT INTO entries VALUES ('" & appinput.Text & "','" & userinput.Text & "','" & passinput.Text & "')"
        SQLcommand.ExecuteNonQuery()
        SQLcommand.Dispose()
        SQLconnect.Close()
        Me.Hide()

I get an error back that says it can’t find the table “entries”
I know the table exists because I can write to it via the command line through sqlite and through Autoit and can see it and edit it in the SQLite browser when I open the database. I don’t understand why VB can’t see it (I know it sees and opens the database file just fine). Any ideas?

Answer 1

Most likely your problem is with relative paths (directories).

sqlite will create a database file if it does not exist so you will never get a “db file not found message”. The first indication of an incorrect path is “table missing”.

My personal experience is that although it goes against my programmers instinct is to alway use an absolute (fully qualified) path/file name for an sqlite database.

If you put in the full file location like “/var/myapp/vault.db” you should be OK.
If this is likly to move around store pick up the file name from a properties/config file — ‘config file not found’ is much easier to deal with than “table not found”.