Program-created drawing's default settings are different from manual creation?

[iamhermit]

I use this code to create a drawing file before opening it：

Database sourceDb = new Database();
if (!File.Exists(filePath))
    sourceDb.SaveAs(filePath, DwgVersion.Current);
sourceDb.Dispose();

However, I have found that this drawing‘s text size is 0.2000 instead of 2.5 as in manual document creation.

I think the other default settings should be different too, but I don't know how to get the user default setting and create it properly.

[iamhermit]

Well, I made it uniform by copying one of template files. But I still don't know which template may user current using.