Determine the color of a coordinate in a PDF

[Brian Futrell]

I'm using the Syncfusion File Formats library in a console application referencing .NET Framework 4.7.2 to create PDFs based on values passed to the program.

So far everything works properly, but was wondering if given a location on the page (x,y) is there a way to return what color is at that location.  I'm wanting to draw a line up to the point a color matching a color used in an image is found.

[Karthikeyan Chandrasekar]

Hi Brian, 

Greetings from Syncfusion. 

Yes you can achieve this requirement by following the below steps. 

1. Convert PDF to Image using the below code snippet.

// Load PDF document 

PdfLoadedDocument ldDoc = new PdfLoadedDocument("input.pdf"); 

// Convert first page to image 

Bitmap page0 = ldDoc.ExportAsImage(0); 

2. Get the color from the image using the GetPixel method.

https://docs.microsoft.com/en-us/dotnet/api/system.drawing.bitmap.getpixel?view=netframework-4.7.2#examples  

Regards 

Karthikeyan