Trying to add a background colour when using PdfHTMLTextElement

[Caroline Gooding]

Please could someone help.  I have the following code to show HTML on my pdf.  I want the text to appear on a coloured background, so I am first drawing a rectangle with the colour box i need and then the html text over the top.  However when i write out the HTML to background colour remains white. 

RectangleF layoutRectangle = new RectangleF((float)rectXStartPos, intY + (borderSize / 2), intWidth - borderSize, height - borderSize);

 PdfBrush backgroundBrush = new PdfSolidBrush(new PdfColor(255, 0, 0));

page.Graphics.DrawRectangle(backgroundBrush, layoutRectangle);

 //HTML TEXT

 string htmlText = objTableSetting.Text;

PdfFont font = CreatePdfFont(FONT_NAME, fontSize, FontStyle.Regular);

PdfHTMLTextElement richTextElement = new PdfHTMLTextElement(htmlText, font, CreateSolidBrush(fontColour));

richTextElement.TextAlign = TextAlign.Left;

 PdfMetafileLayoutFormat format = new PdfMetafileLayoutFormat();

 format.Layout = PdfLayoutType.Paginate;

format.Break = PdfLayoutBreakType.FitPage;

richTextElement.Draw(page, layoutRectangle, format);

If i replace
richTextElement.Draw(page, layoutRectangle, format);'

with

page.Graphics.DrawString(objTableSetting.Text, CreatePdfFont(FONT_NAME, fontSize, FontStyle.Regular), CreateSolidBrush(fontColour), new RectangleF(intX + 5, intY, intWidth - 6, height), objStringFormat);' 

it works fine and i get my text on a red background, but obviously the html tages are written out.

Can someone help?  Many thanks

[Caroline Gooding]

Does anyone know the answer please?  

[Irfana Jaffer Sadhik]

Hi Caroline,

Currently we are validating on the reported behavior with the provided details on our end and we will share the further validation on March 17th, 2025.

Regards,

Irfana J.

[Irfana Jaffer Sadhik]

Hi Caroline,

We have confirmed the issue “Transparency is not applied while drawing the richtextbox” as a defect in our product and we will include the fix on 8th April 2025 

Please use the below feedback link to track the status of the reported bug.

https://www.syncfusion.com/feedback/66292/transparency-is-not-applied-while-drawing-the-richtextbox

Note: If you require a patch for the reported issue in any of our Essential Studio Main or SP release version, then kindly let us know the version, so that we can provide a patch in that version based on our SLA policy.

Disclaimer: “Inclusion of this solution in the weekly release may change due to other factors including but not limited to QA checks and works reprioritization.”

Regards,

Irfana J.