Problem while creating the textstyle during reading the text entity.

[my88480]

IO/dxfreader.cs: private Text ReadText()

                case 7:
                    string styleName = this.DecodeEncodedNonAsciiCharacters(this.chunk.ReadString());
                    if (string.IsNullOrEmpty(styleName))
                    {
                        styleName = this.doc.DrawingVariables.TextStyle;
                    }
                    style = this.GetTextStyle(styleName);
                    this.chunk.Next();
                    break;

    private TextStyle GetTextStyle(string name)
    {
        // invalid names or that are defined in external drawings will be given the default
        if (!TableObject.IsValidName(name))
        {
            name = TextStyle.DefaultName;
        }

        if (this.doc.TextStyles.TryGetValue(name, out TextStyle style))
        {
            return style;
        }

        // if an entity references a table object not defined in the tables section a new one will be created
        return this.doc.TextStyles.Add(new TextStyle(name));
    }

the last code line should be:

return this.doc.TextStyles.Add(new TextStyle(name,fontname));

or you often got the excepltion: Message:Only true type TTF fonts and ACAD compiled shape SHX fonts are allowed.

[haplokuon]

It should be initialized with the default font "simplex.shx". In any case I would like to see a sample DXF that shows this problems, because if the code has reached that point it means the DXF is not well formatted. Your Text is pointing to a TextStyle that has not been defined.

[my88480]

the method new TextStyle(name) points to the following implementation： public TextStyle(string font) : this(Path.GetFileNameWithoutExtension(font), font) { } here, it means the parameter name is the font name ,not the text style name

to reoccur the problem i had, just choose a normal dxf file contains text entities,choose one text change the text style to one which it is not contains in the dxf file. for example: ... 0 SECTION 2 ENTITIES ..... 0 TEXT ..... 7 TextStyleNameNotContained ....

the excepltion occurs: Message:Only true type TTF fonts and ACAD compiled shape SHX fonts are allowed.

[my88480]

So i change the code line: return this.doc.TextStyles.Add(new TextStyle(name,"arial.ttf")); or: return this.doc.TextStyles.Add(new TextStyle(name,"simplex.shx"));