C# – Cannot open SQLite database

csqlitesqlite.netwindows 8windows-store-apps

Using this code:

public void InsertPlatypiRequestedRecord(string PlatypusId, string PlatypusName, DateTime invitationSentLocal)
{
    var db = new SQLiteConnection(SQLitePath);
    {
        db.CreateTable<PlatypiRequested>();
        db.RunInTransaction(() =>
            {
                db.Insert(new PlatypiRequested
                              {
                                  PlatypusId = PlatypusId,
                                  PlatypusName = PlatypusName,
                                  InvitationSentLocal = invitationSentLocal
                              });
                db.Dispose();
            });
    }
}

…I get, "SQLite.SQLiteException was unhandled by user code
HResult=-2146233088
Message=Cannot create commands from unopened database"

…but attempting to add a "db.Open()" doesn't work, because there is apparently no such method.

Best Answer

You are disposing the database prematurely (inside of the transaction). It is better to wrap things up inside of a "using" statement, which will dispose of the db connection:

private void InsertPlatypiRequestedRecord(string platypusId, string platypusName, DateTime invitationSentLocal)
{
    using (var db = new SQLiteConnection(SQLitePath))
    {
        db.CreateTable<PlatypiRequested>();
        db.RunInTransaction(() =>
        {
            db.Insert(new PlatypiRequested
            {
                PlatypusId = platypusId,
                PlatypusName = platypusName,
                InvitationSentLocal = invitationSentLocal
            });
        });
    }
}
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