Tried to open a pdf result in blank pages. Retry with same pdf displayed all pages with content.
It happen only once & couldn't reproduce it.
My application work with 3 steps.
Open PDF
Add Barcode Image
Save PDF
Source pdf had 2 pages with text content, output pdf had only stamped pdf without content.
I believe something went wrong in following line because number of pages are correct but blank.
PdfDocument document = PdfReader.Open(filePath, PdfDocumentOpenMode.Modify);
I need find reason of failure but don't have any idea what went wrong at first time. I have already gone through following questions but they have different case.
https://stackoverflow.com/a/52453789/9102192
PDFSharp returning blank pages when adding password
Can anyone help me finding root cause for this incident or any guesses ?
I would try to do something like this:
using (PdfDocument pdfDoc = PdfReader.Open("source", PdfDocumentOpenMode.Modify)){
// Logic to insert image into pdf //
pdfDoc.Save("targetPath")
}
So I've been trying to use SautinSoft software to convert a pdf document to a docx document. However, whenever I run this code my word document ends up having squished text. I've attached the images below, any idea what is going on?
SautinSoft.PdfFocus f = new SautinSoft.PdfFocus()
f.OpenPdf(#source);
if (f.PageCount > 0){
string path = Path.ChangeExtension(source, ".docx");
f.WordOptions.Format = SautinSoft.PdfFocus.CWordOptions.eWordDocument.Docx;
f.ToWord(#path);
}
This is a docx file after conversion. The image rendered fine, but the text is all squished for some reason. I'm also running on macOS (if that makes a difference). Thank you for anyone that can help!
I found the answer. You have to make sure to set
f.WordOptions.KeepCharScaleAndSpacing = false;
Because by default, the converter will scale the font widths based on the PDF fonts rather than your default word doc fonts.
Just load your fonts which you are using in the PDF in "C:/Windows/Fonts" and reboot your PC.
Then to convert your PDF to WORD again.
If it doesn't work for you. Try to use an another way. Specify the path to your folder's font for PDF Focus like :
f.WordOptions.Fonts = D:/Fonts;
I am working at a print module and I use a PrintDialog to set the printer settings and then to print. The problem is that I have to do that before each print operation.
I want to select the printer settings (all the options provided by PrintDialog) and then to store them somewhere (not to print the document directly from the PrintDialog). Then, when I want to print something, it should print using the stored options.
So my question is the following: can I modify the PrintDialog by changing the name of the "Print" button into "Store Settings"? Or should I rewrite completely the functionality of that Dialog? (I hope not).
I want to change that button name in order to transform it from a print window into a print settings window.
Also, is there an existing implementation of a similar PrintDialog, other than the default one?
Thank you!
#CosminIoniță
If I were you I would do this.
Save all the options of the printdialog in a serialized bin file. Read the file the next time and populate all options of the printdialog from there the next time onward.
Hope it helps
I am wondering how Internet Explorer, Mozilla Firefox or any other browser generate print preview window of an web page loaded into the browser.
The preview image will have various changes such as banners and adv are removed, will have white background and black text and etc.
We would like implement similar print preview window using C# WebBrowser control and i don't want to use default browser Print preview feature such as ExecWB command or any other.
Please give us some light on this.
Thanks,
Ramanand Bhat.
You could try to alter the styles by accessing and modifying the HTMLDocument LINK elements.
HtmlDocument document = WebBrowser1.Document;
foreach (HtmlElement element in document.GetElementsByTagName("LINK"))
{
string cssMedia = element.GetAttribute("Media");
if (cssMedia == "print")
element.SetAttribute("Media", "screen"); //sets print styles to display normally
else
element.SetAttribute("Media", "hidden"); //hides normal styles
}
This will change your print-styles to display in screen view (i.e. as a normal stylesheet without having to use the print-preview window) and your screen-styles to not be shown (as they don't have a Media type of screen anymore)
This is sample code so doesn't have any error checking. It might also have some syntax errors but it should be a start to achieve your goal.
To print a screen you need to set up a call to window.print() in javascript.
Print screen
It will then use whatever css you have assigned as 'print' in the page to render the page as a preview
As far as I know, the banners, advertisements, et cetera are not removed by the browser during a print preview. CSS governs the appearance when the media is print.
I'm generating a coupon based on dynamic input and a cropped image, and I'm displaying the coupon using ntml and css right now, the problem is, printing this has become an issue because of how backgrounds disappear when printing and other problems, so I think the best solution would be to be able to generate an image based on the html, or set up some kind of template that takes in strings and an image, and generates an image using the image fed in as a background and puts the coupon information on top.
Is there anything that does this already?
This is for an ASP.NET 3.5 C# website!
Thanks in advance.
edit: It'd be great if the output could be based on the HTML input, as the coupon is designed by manipulating the DOM using jQuery and dragging stuff around, it all works fine, it's just when it comes to the printing (to paper) it has z-indexing issues.
What you can do is create an aspx page that changes the response type to be in the format you want and then put the image into the stream. I created a barcode generator that does a similar thing. Excluding all the formalities of generating the image, you'll Page_Load will look something like this:
Bitmap FinalBitmap = new Bitmap();
MemoryStream msStream = new MemoryStream();
strInputParameter == Request.Params("MagicParm").ToString()
// Magic code goes here to generate your bitmap image.
FinalBitmap.Save(msStream, ImageFormat.Png);
Response.Clear();
Response.ContentType = "image/png";
msStream.WriteTo(Response.OutputStream);
if ((FinalBitmap != null)) FinalBitmap.Dispose();
and that's it! Then all you have to do in your image is set the URL to be something like RenderImage.aspx?MagicParm=WooHoo or whatever you need. That way you can have it render whatever you want to specify.
You can render html to a bitmap using the WebBrowser control in either a winforms or console application.
An example of this can be found here: http://www.wincustomize.com/articles.aspx?aid=136426&c=1
The above example can be modified to run in ASP.Net by creating a new STAThread and performing an Application.Run on it to start a new message loop.
PHP/Ruby Alternative
If you have accessed this question and are actually looking for soething that will work without Windows, you can try the KHTML library: http://wiki.goatpr0n.de/projects/khtmld
The website has a ridiculous name I admit, but I can assure you it is genuine. Other related pages are: the sourceforge page http://khtml2png.sourceforge.net/
Try PDFSharp...it's not exactly a "take this HTML and make a PDF" but with a small amout of fiddling you can easily make a PDF out of the info you are using to make the HTML.
MARKUP ONLY ALTERNATE SOLUTION
Use SVG and XSLT to transform the html data into an image that can be rendered/saved/etc.
I'll admit that at first it was tedious getting this to work because of all of the coordinates, but well worth the effort once it is running.
There is a very powerful image creation library called GD which I often use with PHP.
I am led to believe there is a wrapper for this library that ASP programmers can use. Try this
Unless the "other problems" are pretty severe, couldn't you just instruct your users to turn on Background Images when printing?
In any case, I'd default to serving a PDF rather than an image, doubly so since it is intended for print.
Just set up your css properly, so that you have a css file targeted at the print medium. It is pretty easy to guarantee that the coupon will always be legible, without worrying about whether they have bg images on or not. Needlesly moving to an image doesn't make any sense, unless there is some reason you don't want it to be machine readable.
I haven't tried to myself, but you should be able to render HTML into an image by using the WebBrowser control and the DrawToBitmap() method inherited from the base Control class.
UPDATE: I tried this myself and there are some caveats. The WebBrowser control doesn't seem to render the web page until the control is show, so the WebBrowser needs to be in a Form and the Form must be shown for the HTML to be rendered and the DocumentCompleted event to be raised.