SaveToString corrupt with Image

Hello Forum,

I m using the iSEDQuickPDF.dll 5.11 (file version 4.42.1.1) in a C# ASP WebApplication.
A generated pdf can either be saved as a file or directly displayed into the web browser.
To display a pdf into browser, I used a MemoryStream (no physical file needed!).
Unfortunatly, the SaveToStream method is only available in Delphi, so I found the following workaround:

First I invoke the method SaveToString,
afterwards following the conversation from string to byte[]

string sPdf = QuickPdfNativeMethods.SaveToString();
MemoryStream mem = new MemoryStream(System.Text.ASCIIEncoding.ASCII.GetBytes(sPdf));

This already works,
provided that no Image is placed into the document!

Using SelectImage(AddImageFromFile/String(...)); and DrawImage();

produces a corrupt stream rather a corrupt or early ending string via SaveToString();

Is this behaviour a already known?
How can I get a String (Stream) from my active document containing a Image?

Using latest version 6.02 Beta throws an exception when caling SaveToFile.

Thanks for help
Regard Torsten Piehl

Hello Ingo,
hello Forum

first of all, thanks for your fast reply.

The following piece of code demonstrates the problem I have.
The code is placed in a C# WebApplication and wil be invoked by clicking a LinkButton.

int docId = QuickPdfNativeMethods.NewDocument();
QuickPdfNativeMethods.SetMeasurementUnits(MeasurementUnit.Millimeters);
QuickPdfNativeMethods.SetOrigin(Origin.TopLeft);
QuickPdfNativeMethods.SetPageSize("A4 Landscape");
QuickPdfNativeMethods.DrawText(10, 10, "Hello World:");

// ** optional including image
int imgId = QuickPdfNativeMethods.AddImageFromFile(@"images\example.jpg", 0);
QuickPdfNativeMethods.SelectImage(imgId);
QuickPdfNativeMethods.DrawImage(50, 50, 113, 52);
// **

QuickPdfNativeMethods.SaveToFile(@"C:\Temp\Test.pdf")
string sPdf = QuickPdfNativeMethods.SaveToString();

Either generation without including a image
Everything works fine.
Output is a Test.pdf and a sPdf string for further Web operations

Or generation with including a image
v5.11: generates a correct Test.pdf file, but a incorrect string calling SaveToString()
v5.22: generates a correct Test.pdf file, but a incorrect string calling SaveToString()
v6.02: generates a correct Test.pdf file, throws an exception caling SaveToString()

I compared the output string with an image, against the output string without an image (v511, v522)
The following difference attract attention:

string without image:
"%PDF-1.4\n%âãÏÓ\n1 0 obj\n<<\n/Type /Pages\n/Count 1\n... ...\n>>\nstartxref\n818\n%%EOF\n"

string with image:
"%PDF-1.4\n%âãÏÓ\n1 0 obj\n<<\n/Type /Pages\n/Count 1\n... .../Image\n/Width 113\n/Height 52\n/ColorSpace /DeviceRGB\n/BitsPerComponent 8\n/Filter /DCTDecode\n>>\nstream\nÿØÿà"

- the string without an image is longer than the one with an image.
- the string with an image seems to be truncated.

I hope I gave all necessary information to reproduce or to exclude the behaviour.

Best regards
Torsten

Hi DELBEKE,

you are right,
that´s my assemption too.

Thanks