public void NHCD23_Supporting_Relative_Path_To_DataSource() { var relativePath = @"..\data\datafile.mdb"; var absolutePath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, relativePath); var constrRelative = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};", relativePath); var constrAbsolute = string.Format("Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};", absolutePath); var connRelative = new JetDbConnection(constrRelative); var connAbsolute = new JetDbConnection(constrAbsolute); Assert.That(connRelative.ConnectionString.Contains(absolutePath), Is.True); Assert.That(connAbsolute.ConnectionString.Contains(absolutePath), Is.True); }