topic Re: Newing a drawing is missing default styles in .NET Forum

Newing a drawing is missing default styles

soonhui — Tue, 25 Feb 2025 07:06:43 GMT

Here's my code to create a new drawing from .Net code

[CommandMethod(nameof(CreateNewDrawing))] public void CreateNewDrawing() { var fileName = @"E:\Sample Project\February 2025\EmptyDrawing.dwg"; using var db = new Database(true, true); db.SaveAs(fileName, DwgVersion.Current); }

I need to stress that the correct file, EmptyDrawing.dwg is created at the designated location. But when I open it, and compare it with a new drawing I create via UI, there are critical difference, in that the (Civil 3D) styles are missing.

Here are the two screenshot ( the first screenshot is for the drawing created via .Net API, the second screenshot is the drawing created via UI) that compare them:

I'm pretty sure I don't create the drawing properly via code, any command that I miss?

Re: Newing a drawing is missing default styles

_gile — Tue, 25 Feb 2025 08:05:55 GMT

Hi,

new Database(true, true) constructor creates a new drawing with no template (as the _NEW command when choosing "Open with no template").

You should use new Database(false, false) and ReadDwgFile with the path of the template you want to start with.

[CommandMethod(nameof(CreateNewDrawing))] public void CreateNewDrawing() { string fileName = @"E:\Sample Project\February 2025\EmptyDrawing.dwg"; string templateName = "SomeTemplate.dwt"; using var db = new Database(false, false); db.ReadDwgFile(templateName, FileOpenMode.OpenForReadAndAllShare, false, null); db.SaveAs(fileName, DwgVersion.Current); }

Re: Newing a drawing is missing default styles

soonhui — Tue, 25 Feb 2025 08:20:08 GMT

@_gile , so what's the exact command that is equivalent to the New?

I guess that New command is just the above coode, plus use the template file at %localappdata%\C3D 20xx\enu\Template\_Autodesk Civil 3D (Metric) NCS.dwt, so it's just equivalent to the templateName = "%localappdata%\C3D 20xx\enu\Template\_Autodesk Civil 3D (Metric) NCS.dwt", but I don't feel like to hardcode it this way, because I don't want to change my code when I upgrade my Civil 3D version.

Is there a upgrade proof way of reading in the template file?

Re: Newing a drawing is missing default styles

_gile — Tue, 25 Feb 2025 08:53:01 GMT

@soonhui a écrit :

@_gile , so what's the exact command that is equivalent to the New?

If you're talking about the "QNEW" command, you can get the template path with:

string templatePath = HostApplicationServices.Current.GetEnvironmentVariable("QnewTemplate");

Re: Newing a drawing is missing default styles

ActivistInvestor — Tue, 25 Feb 2025 09:11:42 GMT

In the UI a template file (. dwt) is usually used as the basis for a new drawing. So you don't create a new database, instead you open a DWT file and save it as a DWG file.