Cannot set PDF Page background color

Aspose.PDF Product Family
1
I have been having trouble setting PDF page background.
Whenever I try to set a background for page, I get the following error message.

"Invalid index: index should be in the range [1..n] where n equals to the operators count."

You can see the exception message picture in the attachment

What does the message mean? I couldn't find out about it anywhere on the web or on the forum...
2

Hi Sung,

Thanks for your inquiry. Please check the following code snippet to set the page background color. You can either create a page object and set its background color or set the background property of any page index from the page collection. Hopefully, it will help you to accomplish your requirements.

//open document
Document pdfDocument = new Document();

//add a page in document
Page page = pdfDocument.Pages.Add();

set page background color
page.Background = Aspose.Pdf.Color.SandyBrown;

//Create text fragment
TextFragment textFragment = new TextFragment("Hello World");
textFragment.Position = new Position(100, 600);

//Set text properties
textFragment.TextState.FontSize = 12;
textFragment.TextState.Font = FontRepository.FindFont("TimesNewRoman");
textFragment.TextState.BackgroundColor = Aspose.Pdf.Color.FromRgb(System.Drawing.Color.LightGray);
textFragment.TextState.ForegroundColor = Aspose.Pdf.Color.FromRgb(System.Drawing.Color.Red);

//Create TextBuilder object
TextBuilder textBuilder = new TextBuilder(page);

//Append the text fragment to the PDF page
textBuilder.AppendText(textFragment);
pdfDocument111.Pages[1].Background =Aspose.Pdf.Color.RoyalBlue;
pdfDocument.Save(myDir + "pagebackgroud.pdf");

Best Regards,