Text style font renamed to arial_1.ttf after read/write

[SRajapandi7]

Hi @DomCR ,

While copying entities from multiple CAD files into a single empty source CAD file using ACadSharp, I was observing an issue with text fonts.

Although the original files use Arial (arial.ttf), after merging the entities into the target file, the font style is automatically changed to arial_1.ttf. This font file does not exist on the system and is not explicitly defined by us.

It appears that ACadSharp automatically generates this font name when multiple TextStyle definitions with the same font (Arial) but different properties are merged into one drawing. As a result, a duplicate font alias (arial_1.ttf) is created internally.

I would like to understand:

Why this automatic font renaming occurs during entity copy/merge

How we can enforce the use of arial.ttf only, without generating arial_1.ttf, when consolidating entities into a single CAD file

Please advise on the recommended approach to control or standardize the TextStyle during this process.

[DomCR]

Hi @SRajapandi7,

The TextStyle.Filename and TextStyle.BigFontFilename are not altered anywhere in the code, only during the reading process.

Could you post a snipped of your code so I can reproduce the error on my end?

I've tried to move entities from one file to another but the font is not alter at all.

[SRajapandi7]

Hi Dom,

string TEMPpath = @"D:\Tools Development\ACAD\Text Style\EMPTY.dwg";
String Docpath1 = @"D:\Tools Development\ACAD\Text Style\INPUT1.dwg";
String Docpath2 = @"D:\Tools Development\ACAD\Text Style\INPUT2.dwg";
String outpath1 = @"D:\Tools Development\ACAD\Text Style\OUTPUT.dwg";

CadDocument template = DwgReader.Read(TEMPpath, onNotification);
CadDocument doc1 = DwgReader.Read(Docpath1, onNotification);
CadDocument doc2 = DwgReader.Read(Docpath2, onNotification);

foreach (var ent in doc1.Entities)
{
    var clone = ent.Clone() as Entity;

    template.Entities.Add(clone);
}

foreach (var ent in doc2.Entities)
{
    var clone = ent.Clone() as Entity;

    template.Entities.Add(clone);
}

DwgWriter.Write(outpath1, template);

Test Files Attached for your Reference :-

Text Style.zip

Check These Texts(Font style set to arial_0.ttf

[DomCR]

The name is in the INPUT1 file, didn't test the INPUT2: