SaveAsImage

[peterkox1]

Hi everyone

i have a problem with this example.
Spire.PDF-for-.NET/blob/master/CS/13_Conversion/ToImage.cs


System.IO.Stream can not convert to system.drawing.image

Code: Select all

        PdfDocument doc = new PdfDocument();
        // Load a PDF file
        doc.LoadFromFile(fileName);
        Image image = doc.SaveAsImage(0, PdfImageType.Bitmap);


but i need a image object from the frist pdf file.
any ideas?

[William.Zhang]

Hello,

Thanks for your inquriy.
To assist us in further investigating your issue, please share with us the following information:
1. Project type you are using(E.g Consoleapp);
2.Target platform of your project (E.g. .NET framework 7.0) ;
3. The version of Spire.PDF you currently have installed.

Sincerely,
William
E-iceblue support team

[t7labarre]

I have the same issue using the code from the tutorial:

Code: Select all

//Create a PdfDocument instance
PdfDocument pdf = new PdfDocument();
 
//Load a sample PDF document
pdf.LoadFromFile("E:\\Files\\input.pdf");
 
//Convert the first page to an image and set the image Dpi
Image image = pdf.SaveAsImage(0, PdfImageType.Bitmap, 500, 500);
 
//Save the image as a JPG file
image.Save("ToJPG.jpg", ImageFormat.Jpeg);


#1) SaveAsImage only acceptes 2 parameters
#2) SaveAsImage returns a System.IO.Stream which does not support a .Save() method


Using .Net 8.0 on a Windows machine
Testing with FreeSpire.PDF version 10.2.0

[Abel.He]

Hi,

Thanks for your inquiry.
Please kindly note that only the Spire.Pdf.dll for NetFrameWork4.8 and NetStandard 2.0 are provided in FreeSpire.Pdf 10.2.0, due to the Net 8.0 is used in your project, the Spire.Pdf.dll of NetStandard2.0 will be auto intalled in your prject when installing FreeSpire.Pdf through Nuget, and SaveAsImage only acceptes 2 parameters in this version’s dll.

In our commercial version of Spire.Pdf, the Spire.Pdf.dll of NetCore version are provided, such as Spire.Pdf.dll for Net 6.0、Net7.0, the SaveAsImage method can acceptes 4 parameters in these Spire.Pdf.dlls. You can have a try. For new user, we are willing to provide a temporary month license to help you remove red warning message and function limitation. If you need it, you can contact our sales team([email protected]).

Sincerely
Abel
E-iceblue support team