I used [PdfSharp][1]. It&#39;s free, open source and quite convenient to use, but I can&#39;t say whether it is the best or not, because I haven&#39;t really used anything else.


  [1]: http://www.pdfsharp.net/

**Update:**

I&#39;m not sure when or if the license changed for the [iText# library][1], but it is licensed under [AGPL][2] which means it must be licensed if included with a closed-source product. The question does not (currently) require free or open-source libraries. One should always investigate the license type of any library used in a project.

---

I have used [iText#][3] with success in .NET C# 3.5; it is a port of the open source Java library for PDF generation and it&#39;s free.

There is a [NuGet package][4] available for iTextSharp version 5 and the [official developer documentation][5], as well as C# [examples][6], can be found at itextpdf.com


  [1]: https://github.com/itext/itext7-dotnet
  [2]: https://github.com/itext/itext7-dotnet/blob/develop/LICENSE.md
  [3]: https://github.com/itext/itext7-dotnet
  [4]: https://www.nuget.org/packages/itextsharp/
  [5]: http://developers.itextpdf.com/developers-home
  [6]: http://developers.itextpdf.com/examples-itext5

My work uses Winnovative&#39;s PDF generator (We&#39;ve used it mainly to convert HTML to PDF, but you can generate it other ways as well)

Suppose I have a numpy array `x = [5, 2, 3, 1, 4, 5]`, `y = [&#39;f&#39;, &#39;o&#39;, &#39;o&#39;, &#39;b&#39;, &#39;a&#39;, &#39;r&#39;]`. I want to select the elements in `y` corresponding to elements in `x` that are greater than 1 and less than 5.

I tried

    x = array([5, 2, 3, 1, 4, 5])
    y = array([&#39;f&#39;,&#39;o&#39;,&#39;o&#39;,&#39;b&#39;,&#39;a&#39;,&#39;r&#39;])
    output = y[x &gt; 1 &amp; x &lt; 5] # desired output is [&#39;o&#39;,&#39;o&#39;,&#39;a&#39;]

but this doesn&#39;t work. How would I do this?

How do I select elements of an array given condition?

How can I detect the Windows OS versions in .NET?

What code can I use?

Detect Windows version in .NET

Can you recomend any PDF API for C#. Free is the best, but I don&#39;t mind paying for it.


Best C# API to create PDF

<p>Can you recomend any PDF API for C#. Free is the best, but I don't mind paying for it.</p>


Has anyone seen a recent (and fairly balanced) study into the relative costs for software development using differing languages ? I would particular like to see the relative costs of Java Vs. C# Vs. Delphi.

Studies of relative costs for development in different languages

I&#39;m trying to connect an application (the client) to an exposed WCF service, but not through the application configuration file, but in code.

How should I go about doing this?


How to programmatically connect a client to a WCF service?

In Java is there an equivalent to the [C# &quot;using&quot; statement][1] allowing to define a scope for an object:

    using (AwesomeClass hooray = new AwesomeClass())
    {
       // Great code
    }


  [1]: http://msdn.microsoft.com/en-us/library/yh598w02(VS.80).aspx

&quot;using&quot; keyword in java

`ListView.ScrollIntoView(object)` currently finds an object in the `ListView` and scrolls to it. If you are positioned beneath the object you are scrolling to, it scrolls the object to the top row. If you are positioned above, it scrolls it into view at the bottom row.

I&#39;d like to have the item be scrolled right into the center of my list view if it is currently not visible. Is there an easy way to accomplish this?

Make ListView.ScrollIntoView Scroll the Item into the Center of the ListView (C#)

    string strI;   

    for (int i = 1; i &lt; 100; i++)
        strI = i.ToString();

in here,  if `i = 1` then `ToString` yields `&quot;1&quot;`

But I want to get  `&quot;01&quot;` or `&quot;001&quot;`

It looks quite easy, but there&#39;s only article about 

    datetime.ToString(&quot;yyyy-MM-dd&quot;)`



int value under 10 convert to string two digit number

Let&#39;s say I want to use Moq to create a callback on a setter to store the set property in my own field for later use.  (Contrived example - but it gets to the point of the question.)  I could do something like this:

    myMock.SetupSet(x =&gt; x.MyProperty).Callback(value =&gt; myLocalVariable = value);

And that works just fine.  However, SetupSet is obsolete according to Intellisense.  But it doesn&#39;t say what should be used as an alternative.  I know that moq provides SetupProperty which will autowire the property with a backing field.  But that is not what I&#39;m looking for.  I want to capture the set value into my own variable.  How should I do this using non-obsolete methods?

SetupSet() is obsolete. In place of what?

I have a piece of code here that breaks if the directory doesn&#39;t exist:

    System.IO.File.WriteAllText(filePath, content);

In one line (or a few lines), is it possible to check if the directory leading to the new file doesn&#39;t exist and if not, to create it before creating the new file?

I&#39;m using .NET 3.5.


How do I create directory if it doesn&#39;t exist to create a file?

I need to change the target framework for all projects. I have many solutions with hundreds of projects. 

Anything new here or do I have to change every single project?


  [1]: http://stackoverflow.com/questions/1914489/change-the-target-framework-for-all-my-projects-in-a-visual-studio-2008-to-3-5

Change the Target Framework for all my projects in a Visual Studio Solution

Two problems:

**1) Basic .NET Assembly Not Included in ILMerged Assembly**

I&#39;m having trouble using ILMerge in my post-build after upgrading from .NET 3.5/Visual Studio 2008 to .NET 4/Visual Studio 2010.  I have a Solution with several projects whose target framework is set to &quot;.NET Framework 4&quot;.  I use the following ILMerge command to merge the individual project DLLs into a single DLL:

    if not $(ConfigurationName) == Debug
      if exist &quot;C:\Program Files (x86)\Microsoft\ILMerge\ILMerge.exe&quot;
        &quot;C:\Program Files (x86)\Microsoft\ILMerge\ILMerge.exe&quot;
          /lib:&quot;C:\Windows\Microsoft.NET\Framework64\v4.0.30319&quot;
          /lib:&quot;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\PublicAssemblies&quot;
          /keyfile:&quot;$(SolutionDir)$(SolutionName).snk&quot;
          /targetplatform:v4
          /out:&quot;$(SolutionDir)bin\development\$(SolutionName).dll&quot;
          &quot;$(SolutionDir)Connection\$(OutDir)Connection.dll&quot;
          ...other project DLLs...
          /xmldocs 

If I leave off specifying the location of the .NET 4 framework directory, I get an &quot;Unresolved assembly reference not allowed: System&quot; error from ILMerge.  If I leave off specifying the location of the MSTest directory, I get an &quot;Unresolved assembly reference not allowed: Microsoft.VisualStudio.QualityTools.UnitTestFramework&quot; error.

The ILMerge command above works and produces a DLL.  When I reference that DLL in another .NET 4 C# project, however, and try to use code within it, I get the following warning:

&gt; The primary reference &quot;MyILMergedDLL&quot; could not be resolved because it has an indirect dependency on the .NET Framework assembly &quot;mscorlib, Version=4.0, Culture=neutral, PublicKeyToken=b77a5c561934e089&quot; which has a higher version &quot;4.0.65535.65535&quot; than the version &quot;4.0.0.0&quot; in the current target framework.

If I then remove the `/targetplatform:v4` flag and try to use MyILMergedDLL.dll, I get the following error:

&gt; The type &#39;System.Xml.Serialization.IXmlSerializable&#39; is defined in an assembly that is not referenced. You must add a reference to assembly &#39;System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089&#39;.

It doesn&#39;t seem like I should have to do that.  Whoever uses my MyILMergedDLL.dll API should not have to add references to whatever libraries it references.  How can I get around this?

**2) TypeLoadException Only When Using Merged Assembly**

**Edit:** beyond this, even if I do add a reference to `System.Xml` in the consumer project that uses MyILMergedDLL.dll, making use of some code in MyILMergedDLL.dll gives this exception:

&gt; System.TypeLoadException: Could not load type &#39;System.Func`2&#39; from assembly &#39;MyILMergedDLL, Version=1.0.1.1, Culture=neutral, PublicKeyToken=...&#39;.

This is the code in my consumer project; the line that caused the `TypeLoadException` is the second one:

    var keys = new[] {&quot;a&quot;, &quot;b&quot;, &quot;c&quot;};
    var row = new Row(keys);

The particular `Row` constructor that throws the `TypeLoadException` is defined in a public class in `MyILMergedDLL`, and when I use this constructor when referencing the individual project DLLs, it works fine.  It is only when I use this constructor when referencing the IL-merged DLL that I get the exception.  I don&#39;t know what&#39;s going on.

Here&#39;s that constructor:

    public Row(IEnumerable&lt;string&gt; keys) : base(keys) { }

And the `base` to which it is referring has this code:

    foreach (string key in keys.Where(
        key =&gt; !string.IsNullOrEmpty(key)
    ))
    {
        _dic.Add(key, string.Empty);
    }

using ILMerge with .NET 4 libraries

What is the difference between `File.ReadAllLines()` and `File.ReadAllText()`?

What is the difference between File.ReadAllLines() and File.ReadAllText()?

Im creating pdfs server side with lots of graphics so maximizing real estate is a must but at the same time ensuring users printers can handle the tight margins is a must. 

Does anyone have an idea what safe values I can use for the margins when authoring the pdfs. In the past Ive used work and home printers with margins of about one cm with no problems but of course I can&#39;t take this as the defacto minimum. 

Oh and I don&#39;t really want to allow the user to specify the margin (50% lazyness 50% will get complicated.)

Ive googled but couldn&#39;t find anything concrete. (average minimum margin printing)






What are the minimum margins most printers can handle?

I know this has been asked before, but I&#39;m still undecided on which PDF generation framework to use for my current project. 

My requirements

 - on-the-fly generation of PDF documents (mainly order forms, invoices)
 - Java based
 - easy to layout
 - should be open source
 - easy to change layout

A lot of people seem to use _iText_, but I have some concerns (apart from the changed licence) regarding separation of concerns: In an HTML context there&#39;s good MVC support, where I usually stick to Spring MVC and FreeMarker to separate logic and layout. I&#39;m a little bit worried that with iText you end up mixing code and layout a lot.

I am aware, that _Apache FOP_ could be a solution here, but then again I find XSLT tedious to work with and I read that FOP can be slow when it comes to huge throuput of many documents?

I also considered _JasperReports_, but from my understanding this is more suited for  reports containing tabular datasets rather than single documents such as invoices which require a lot of layout formatting?

Any thoughts on this?

PDF Generation Library for Java

The title sums it all.

I want to add a text to an existing PDF file using [iTextSharp][1], however i can&#39;t find how to do it anywhere in the web...

PS: I cannot use PDF forms.

  [1]: http://sourceforge.net/projects/itextsharp/

ITextSharp insert text to an existing pdf

Using the **CoreGraphics** framework is tedious work, in my honest opinion, when it comes to programmatically drawing a PDF file.

I would like to programmatically create a **PDF**, using various objects from views throughout my app.

I am interested to know if there are any good PDF tutorials around for the iOS SDK, maybe a drop in library.

I&#39;ve seen this tutorial, [PDF Creation Tutorial][1], but it was mostly written in C. Looking for more Objective-C style. This also seems like a ridiculous way to write to a PDF file, having to calculate where lines and other objects will be placed.


    void CreatePDFFile (CGRect pageRect, const char *filename) 
    {	
        // This code block sets up our PDF Context so that we can draw to it
        CGContextRef pdfContext;
        CFStringRef path;
        CFURLRef url;
        CFMutableDictionaryRef myDictionary = NULL;

        // Create a CFString from the filename we provide to this method when we call it
        path = CFStringCreateWithCString (NULL, filename,
                                          kCFStringEncodingUTF8);

        // Create a CFURL using the CFString we just defined
        url = CFURLCreateWithFileSystemPath (NULL, path,
                                             kCFURLPOSIXPathStyle, 0);
        CFRelease (path);
        // This dictionary contains extra options mostly for &#39;signing&#39; the PDF
        myDictionary = CFDictionaryCreateMutable(NULL, 0,
                                                 &amp;kCFTypeDictionaryKeyCallBacks,
                                                 &amp;kCFTypeDictionaryValueCallBacks);

        CFDictionarySetValue(myDictionary, kCGPDFContextTitle, CFSTR(&quot;My PDF File&quot;));
        CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR(&quot;My Name&quot;));
        // Create our PDF Context with the CFURL, the CGRect we provide, and the above defined dictionary
        pdfContext = CGPDFContextCreateWithURL (url, &amp;pageRect, myDictionary);
        // Cleanup our mess
        CFRelease(myDictionary);
        CFRelease(url);
        // Done creating our PDF Context, now it&#39;s time to draw to it
        
        // Starts our first page
        CGContextBeginPage (pdfContext, &amp;pageRect);
        
        // Draws a black rectangle around the page inset by 50 on all sides
        CGContextStrokeRect(pdfContext, CGRectMake(50, 50, pageRect.size.width - 100, pageRect.size.height - 100));
        
        // This code block will create an image that we then draw to the page
        const char *picture = &quot;Picture&quot;;
        CGImageRef image;
        CGDataProviderRef provider;
        CFStringRef picturePath;
        CFURLRef pictureURL;
        
        picturePath = CFStringCreateWithCString (NULL, picture,
                                                 kCFStringEncodingUTF8);
        pictureURL = CFBundleCopyResourceURL(CFBundleGetMainBundle(), picturePath, CFSTR(&quot;png&quot;), NULL);
        CFRelease(picturePath);
        provider = CGDataProviderCreateWithURL (pictureURL);
        CFRelease (pictureURL);
        image = CGImageCreateWithPNGDataProvider (provider, NULL, true, kCGRenderingIntentDefault);
        CGDataProviderRelease (provider);
        CGContextDrawImage (pdfContext, CGRectMake(200, 200, 207, 385),image);
        CGImageRelease (image);
        // End image code
        
        // Adding some text on top of the image we just added
        CGContextSelectFont (pdfContext, &quot;Helvetica&quot;, 16, kCGEncodingMacRoman);
        CGContextSetTextDrawingMode (pdfContext, kCGTextFill);
        CGContextSetRGBFillColor (pdfContext, 0, 0, 0, 1);
        const char *text = &quot;Hello World!&quot;;
        CGContextShowTextAtPoint (pdfContext, 260, 390, text, strlen(text));
        // End text
        
        // We are done drawing to this page, let&#39;s end it
        // We could add as many pages as we wanted using CGContextBeginPage/CGContextEndPage
        CGContextEndPage (pdfContext);
        
        // We are done with our context now, so we release it
        CGContextRelease (pdfContext);
    }

**EDIT:** Here&#39;s an example on [**GitHub using libHaru**][2] in an iPhone project. 


  [1]: http://www.iphonedevsdk.com/forum/iphone-sdk-tutorials/10989-pdf-creation-tutorial.html
  [2]: https://github.com/akisute/iPhonePDF

iOS SDK - Programmatically generate a PDF file

When my app runs (or when I run from commandline) the wkhtmltopdf command I get the following error: (showing it from command line)

    #&gt; wkhtmltopdf 
    wkhtmltopdf: error while loading shared libraries: libXrender.so.1: cannot open shared object file: No such file or directory

I noticed the lib is indeed in the `/usr/lib` folder but not the `/lib` folder. Does it matter which one of these it is in? Is there any way to get it to recognize it?

    #&gt; ls -l /usr/lib/libXrender.so*
    lrwxrwxrwx 1 root root    19 Feb 17 07:20 /usr/lib/libXrender.so -&gt; libXrender.so.1.3.0
    lrwxrwxrwx 1 root root    19 Feb 17 07:20 /usr/lib/libXrender.so.1 -&gt; libXrender.so.1.3.0
    -rwxr-xr-x 1 root root 39184 Jan 29  2010 /usr/lib/libXrender.so.1.3.0

    #&gt; ls -l /lib/libXrender.so*
    ls: cannot access /lib/libXrender.so*: No such file or directory

I also checked dependencies of the lib

    # ldd /usr/lib/libXrender.so.1
    	libX11.so.6 =&gt; /usr/lib/libX11.so.6 (0x00002b9cb5afd000)
    	libc.so.6 =&gt; /lib/libc.so.6 (0x00002b9cb5e04000)
    	libXau.so.6 =&gt; /usr/lib/libXau.so.6 (0x00002b9cb6143000)
    	libXdmcp.so.6 =&gt; /usr/lib/libXdmcp.so.6 (0x00002b9cb6347000)
    	libdl.so.2 =&gt; /lib/libdl.so.2 (0x00002b9cb654d000)
    	/lib64/ld-linux-x86-64.so.2 (0x0000555555554000)

This is running on an EngineYard gentoo server

Content Type	Original Author	Original Content on Stackoverflow
Question	Sven	View Question on Stackoverflow
Solution 1 - C#	n535	View Answer on Stackoverflow
Solution 2 - C#	JYelton	View Answer on Stackoverflow
Solution 3 - C#	Justin	View Answer on Stackoverflow

Best C# API to create PDF

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Detect Windows version in .NET

How do I select elements of an array given condition?

Attributions