[CE 10.17.00.209 C#] Get font used by selected TextElement

Remy Moerland said:

would've expected something like TextRunProperties if anything or it to be in the TextBlock.Properties

No — a TextBlock can contain multiple pieces of text each having a different style and font.  A TextBlock is not a DGN element.  It's an abstraction of the data required to build a block of text.  The block can contain text of differing sizes, different styles and organized on separate lines.

When you convert a TextBlock to a DGN element, the API decides for you whether that should be a single text element or multiple text elements in a text node.

Hi Jon,

Thank you for the additional information!

Regards,
Remy

Remy,

Did this work for you? I was working on something similar. When I get the Font from the TextBlock for a TextElement that I know the Font is being substituted, the DgnFont.IsPresent value is True, and the DgnFont.Name property shows the substitute font name.

Hi Mike,

Yes for my use case this helped. The complete code I used to get the font of the selected text looks like this:

DgnModelRef modelRef = Session.Instance.GetActiveDgnModelRef();
uint numSelected = SelectionSetManager.NumSelected();

if (numSelected == 0)
    return "Please Select a text node";
else if (numSelected > 1)
    return "Please select only one text node";

Element el = null;
SelectionSetManager.GetElement(0, ref el, ref modelRef);

ParaphFiles parFile = ParaphFiles.NONE;

switch (el.ElementType)
{
    case MSElementType.Text:
        var textEle = (TextElement)el;
        var partID = textEle.GetTextPartIds(new TextQueryOptions())[0];

        TextBlock textPart = textEle.GetTextPart(partID);
        DgnFont font = textPart.GetRunPropertiesForAdd().Font;
        break;

    case MSElementType.TextNode:
        var node = (TextNodeElement)el;
        System.Diagnostics.Debug.WriteLine($"Not yet handled");
        break;

    default:
        System.Diagnostics.Debug.WriteLine($"Element was of type {el.ElementType} which is not a valid text type");
        break;
}

Hi Remy,

Remy Moerland said:

The complete code I used

be aware it is not recommended to use MSElementType. It is not error, but it's quite old C-style concept, that does not work with new elements.

C# and object-thinking allows to write simpler code with the same functionality:

if (el is TextElement textEle)
{
    var partID = textEle.GetTextPartIds(default(TextQueryOptions))[0];
    TextBlock textPart = textEle.GetTextPart(partID);
    DgnFont font = textPart.GetRunPropertiesForAdd().Font;
}
else if (el is TextNodeElement node)
{
    System.Diagnostics.Debug.WriteLine($"Not yet handled");
}
else
{
    System.Diagnostics.Debug.WriteLine($"Element was of type {el.ElementType} which is not a valid text type");
}

With regards,

  Jan

Hi Remy,

Remy Moerland said:

The complete code I used

be aware it is not recommended to use MSElementType. It is not error, but it's quite old C-style concept, that does not work with new elements.

C# and object-thinking allows to write simpler code with the same functionality:

if (el is TextElement textEle)
{
    var partID = textEle.GetTextPartIds(default(TextQueryOptions))[0];
    TextBlock textPart = textEle.GetTextPart(partID);
    DgnFont font = textPart.GetRunPropertiesForAdd().Font;
}
else if (el is TextNodeElement node)
{
    System.Diagnostics.Debug.WriteLine($"Not yet handled");
}
else
{
    System.Diagnostics.Debug.WriteLine($"Element was of type {el.ElementType} which is not a valid text type");
}

With regards,

  Jan