blocks|key|3093877|text|ASP+.Net进程可能没有该目录的写入权限。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3093878|尝试告诉它写入%25TEMP%25，看看它是否工作。|offset|length|style|CODE|3093879|另外，让你的.Net页面回显进程的stdout和stderr，并检查错误消息。|3093880|entityMap^0|0|7|6|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

The ASP .Net process probably doesn't have write access to the directory.

Try telling it to write to <code>%TEMP%</code>, and see if it works.

Also, make your ASP .Net page echo the process's stdout and stderr, and check for error messages.

blocks|key|3306581|text|这通常是一个糟糕的想法，原因有很多。如果发生崩溃，你将如何控制派生出来的可执行文件，但最终会留在内存中？如果拒绝服务攻击，或者恶意的东西进入TestPDF.htm，该怎么办？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3306582|我的理解是，ASP.NET用户帐户没有在本地登录的权限。它还需要具有正确的文件权限才能访问可执行文件和写入文件系统。您需要编辑本地安全策略，并让ASP.NET用户帐户(可能是ASPNET)在本地登录(默认情况下，它可能在拒绝列表中)。然后，您需要编辑其他文件在NTFS文件系统上的权限。如果您处于共享主机环境中，则可能无法应用所需的配置。|3306583|使用这样的外部可执行文件的最好方法是将ASP.NET代码中的作业排入队列，并让某种服务监视该队列。如果你这样做，你会保护自己免受各种不好的事情发生。在我看来，更改用户帐户的维护问题并不值得努力，虽然设置服务或计划的作业是一种痛苦，但它只是一个更好的设计。ASP.NET页面应该轮询输出的结果队列，您可以向用户显示一个等待页面。这在大多数情况下是可以接受的。|3306584|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

There are many reason why this is generally a bad idea. How are you going to control the executables that get spawned off but end up living on in memory if there is a crash? What about denial-of-service attacks, or if something malicious gets into TestPDF.htm?

My understanding is that the ASP.NET user account will not have the rights to logon locally. It also needs to have the correct file permissions to access the executable and to write to the file system. You need to edit the local security policy and let the ASP.NET user account (maybe ASPNET) logon locally (it may be in the deny list by default). Then you need to edit the permissions on the NTFS filesystem for the other files. If you are in a shared hosting environment it may be impossible to apply the configuration you need.

The best way to use an external executable like this is to queue jobs from the ASP.NET code and have some sort of service monitor the queue. If you do this you will protect yourself from all sorts of bad things happening. The maintenance issues with changing the user account are not worth the effort in my opinion, and whilst setting up a service or scheduled job is a pain, its just a better design. The ASP.NET page should poll a result queue for the output and you can present the user with a wait page. This is acceptable in most cases.

blocks|key|3093929|text|更新：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3093930|我下面的回答是在磁盘上创建pdf文件。然后，我将该文件下载到用户浏览器中。考虑使用下面Hath的答案，让wkhtml2pdf输出到一个流，然后直接发送给用户-这将绕过许多文件权限等问题。|3093931|我的原始答案：|3093932|确保您为PDF指定了一个可由服务器(我认为通常是NETWORK_SERVICE+)上运行的IIS的ASP.NET进程写入的输出路径。|3093933|我的代码看起来是这样的(并且它是有效的)：|3093934|///+<summary>
///+Convert+Html+page+at+a+given+URL+to+a+PDF+file+using+open-source+tool+wkhtml2pdf
///+</summary>
///+<param+name="Url"></param>
///+<param+name="outputFilename"></param>
///+<returns></returns>
public+static+bool+HtmlToPdf(string+Url,+string+outputFilename)
{
++++//+assemble+destination+PDF+file+name
++++string+filename+=+ConfigurationManager.AppSettings["ExportFilePath"]+%2B+"\\"+%2B+outputFilename+%2B+".pdf";

++++//+get+proj+no+for+header
++++Project+project+=+new+Project(int.Parse(outputFilename));

++++var+p+=+new+System.Diagnostics.Process();
++++p.StartInfo.FileName+=+ConfigurationManager.AppSettings["HtmlToPdfExePath"];

++++string+switches+=+"--print-media-type+";
++++switches+%2B=+"--margin-top+4mm+--margin-bottom+4mm+--margin-right+0mm+--margin-left+0mm+";
++++switches+%2B=+"--page-size+A4+";
++++switches+%2B=+"--no-background+";
++++switches+%2B=+"--redirect-delay+100";

++++p.StartInfo.Arguments+=+switches+%2B+"+"+%2B+Url+%2B+"+"+%2B+filename;

++++p.StartInfo.UseShellExecute+=+false;+//+needs+to+be+false+in+order+to+redirect+output
++++p.StartInfo.RedirectStandardOutput+=+true;
++++p.StartInfo.RedirectStandardError+=+true;
++++p.StartInfo.RedirectStandardInput+=+true;+//+redirect+all+3,+as+it+should+be+all+3+or+none
++++p.StartInfo.WorkingDirectory+=+StripFilenameFromFullPath(p.StartInfo.FileName);

++++p.Start();

++++//+read+the+output+here...
++++string+output+=+p.StandardOutput.ReadToEnd();+

++++//+...then+wait+n+milliseconds+for+exit+(as+after+exit,+it+can't+read+the+output)
++++p.WaitForExit(60000);+

++++//+read+the+exit+code,+close+process
++++int+returnCode+=+p.ExitCode;
++++p.Close();+

++++//+if+0+or+2,+it+worked+(not+sure+about+other+values,+I+want+a+better+way+to+confirm+this)
++++return+(returnCode+==+0+%7C%7C+returnCode+==+2);
}|code-block|syntax|javascript|3093935|entityMap^0|0|3|0|0|0|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|11|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|12|8|@]|D|@]|E|$]]|$1|N|3|O|5|P|7|13|8|@]|D|@]|E|$Q|R]]|$1|S|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|T|$]]

Update: 
My answer below, creates the pdf file on the disk. I then streamed that file to the users browser as a download. Consider using something like Hath's answer below to get wkhtml2pdf to output to a stream instead and then send that directly to the user - that will bypass lots of issues with file permissions etc.

My original answer: 
Make sure you've specified an output path for the PDF that is writeable by the ASP.NET process of IIS running on your server (usually NETWORK_SERVICE I think).

Mine looks like this (and it works):

<pre><code>/// &lt;summary&gt;
/// Convert Html page at a given URL to a PDF file using open-source tool wkhtml2pdf
/// &lt;/summary&gt;
/// &lt;param name="Url"&gt;&lt;/param&gt;
/// &lt;param name="outputFilename"&gt;&lt;/param&gt;
/// &lt;returns&gt;&lt;/returns&gt;
public static bool HtmlToPdf(string Url, string outputFilename)
{
 // assemble destination PDF file name
 string filename = ConfigurationManager.AppSettings["ExportFilePath"] + "\\" + outputFilename + ".pdf";

 // get proj no for header
 Project project = new Project(int.Parse(outputFilename));

 var p = new System.Diagnostics.Process();
 p.StartInfo.FileName = ConfigurationManager.AppSettings["HtmlToPdfExePath"];

 string switches = "--print-media-type ";
 switches += "--margin-top 4mm --margin-bottom 4mm --margin-right 0mm --margin-left 0mm ";
 switches += "--page-size A4 ";
 switches += "--no-background ";
 switches += "--redirect-delay 100";

 p.StartInfo.Arguments = switches + " " + Url + " " + filename;

 p.StartInfo.UseShellExecute = false; // needs to be false in order to redirect output
 p.StartInfo.RedirectStandardOutput = true;
 p.StartInfo.RedirectStandardError = true;
 p.StartInfo.RedirectStandardInput = true; // redirect all 3, as it should be all 3 or none
 p.StartInfo.WorkingDirectory = StripFilenameFromFullPath(p.StartInfo.FileName);

 p.Start();

 // read the output here...
 string output = p.StandardOutput.ReadToEnd(); 

 // ...then wait n milliseconds for exit (as after exit, it can't read the output)
 p.WaitForExit(60000); 

 // read the exit code, close process
 int returnCode = p.ExitCode;
 p.Close(); 

 // if 0 or 2, it worked (not sure about other values, I want a better way to confirm this)
 return (returnCode == 0 || returnCode == 2);
}
</code></pre>

blocks|key|3306614|text|using+System;
using+System.Diagnostics;
using+System.Web;

public+partial+class+pdftest+:+System.Web.UI.Page
{
++++protected+void+Page_Load(object+sender,+EventArgs+e)
++++{

++++}
++++private+void+fn_test()
++++{
++++++++try
++++++++{
++++++++++++string+url+=+HttpContext.Current.Request.Url.AbsoluteUri;
++++++++++++Response.Write(url);
++++++++++++ProcessStartInfo+startInfo+=+new+ProcessStartInfo();
++++++++++++startInfo.FileName+=+
++++++++++++++++@"C:\PROGRA~1\WKHTML~1\wkhtmltopdf.exe";//"wkhtmltopdf.exe";
++++++++++++startInfo.Arguments+=+url+%2B+@"+C:\test"
+++++++++++++++++%2B+Guid.NewGuid().ToString()+%2B+".pdf";
++++++++++++Process.Start(startInfo);
++++++++}
++++++++catch+(Exception+ex)
++++++++{
++++++++++++string+xx+=+ex.Message.ToString();
++++++++++++Response.Write(" "+%2B+xx);
++++++++}
++++}
++++protected+void+btn_test_Click(object+sender,+EventArgs+e)
++++{
++++++++fn_test();
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3306615|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>using System;
using System.Diagnostics;
using System.Web;

public partial class pdftest : System.Web.UI.Page
{
 protected void Page_Load(object sender, EventArgs e)
 {

 }
 private void fn_test()
 {
 try
 {
 string url = HttpContext.Current.Request.Url.AbsoluteUri;
 Response.Write(url);
 ProcessStartInfo startInfo = new ProcessStartInfo();
 startInfo.FileName = 
 @"C:\PROGRA~1\WKHTML~1\wkhtmltopdf.exe";//"wkhtmltopdf.exe";
 startInfo.Arguments = url + @" C:\test"
 + Guid.NewGuid().ToString() + ".pdf";
 Process.Start(startInfo);
 }
 catch (Exception ex)
 {
 string xx = ex.Message.ToString();
 Response.Write("&lt;br&gt;" + xx);
 }
 }
 protected void btn_test_Click(object sender, EventArgs e)
 {
 fn_test();
 }
}
</code></pre>

blocks|key|330497|text|您可以通过指定"-“作为输出文件来告诉wkhtmltopdf将其输出发送到sout。然后，您可以将进程的输出读取到响应流中，并避免与写入文件系统相关的权限问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|330498|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You can tell wkhtmltopdf to send it's output to sout by specifying "-" as the output file.
You can then read the output from the process into the response stream and avoid the permissions issues with writing to the file system.

blocks|key|3306641|text|当我尝试在windows服务中使用msmq时，我也遇到了同样的问题，但由于某些原因，它的速度非常慢。(流程部分)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3306642|这就是最终有效的方法：|3306643|private+void+DoDownload()
{
++++var+url+=+Request.Url.GetLeftPart(UriPartial.Authority)+%2B+"/CPCDownload.aspx?IsPDF=False?UserID="+%2B+this.CurrentUser.UserID.ToString();
++++var+file+=+WKHtmlToPdf(url);
++++if+(file+!=+null)
++++{
++++++++Response.ContentType+=+"Application/pdf";
++++++++Response.BinaryWrite(file);
++++++++Response.End();
++++}
}

public+byte[]+WKHtmlToPdf(string+url)
{
++++var+fileName+=+"+-+";
++++var+wkhtmlDir+=+"C:\\Program+Files\\wkhtmltopdf\\";
++++var+wkhtml+=+"C:\\Program+Files\\wkhtmltopdf\\wkhtmltopdf.exe";
++++var+p+=+new+Process();

++++p.StartInfo.CreateNoWindow+=+true;
++++p.StartInfo.RedirectStandardOutput+=+true;
++++p.StartInfo.RedirectStandardError+=+true;
++++p.StartInfo.RedirectStandardInput+=+true;
++++p.StartInfo.UseShellExecute+=+false;
++++p.StartInfo.FileName+=+wkhtml;
++++p.StartInfo.WorkingDirectory+=+wkhtmlDir;

++++string+switches+=+"";
++++switches+%2B=+"--print-media-type+";
++++switches+%2B=+"--margin-top+10mm+--margin-bottom+10mm+--margin-right+10mm+--margin-left+10mm+";
++++switches+%2B=+"--page-size+Letter+";
++++p.StartInfo.Arguments+=+switches+%2B+"+"+%2B+url+%2B+"+"+%2B+fileName;
++++p.Start();

++++//read+output
++++byte[]+buffer+=+new+byte[32768];
++++byte[]+file;
++++using(var+ms+=+new+MemoryStream())
++++{
++++++++while(true)
++++++++{
++++++++++++int+read+=++p.StandardOutput.BaseStream.Read(buffer,+0,buffer.Length);

++++++++++++if(read+<=0)
++++++++++++{
++++++++++++++++break;
++++++++++++}
++++++++++++ms.Write(buffer,+0,+read);
++++++++}
++++++++file+=+ms.ToArray();
++++}

++++//+wait+or+exit
++++p.WaitForExit(60000);

++++//+read+the+exit+code,+close+process
++++int+returnCode+=+p.ExitCode;
++++p.Close();

++++return+returnCode+==+0+?+file+:+null;
}|code-block|syntax|javascript|3306644|感谢Graham+Ambrose和其他所有人。|3306645|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I had the same problem when i tried using msmq with a windows service but it was very slow for some reason. (the process part).

This is what finally worked:

<pre><code>private void DoDownload()
{
 var url = Request.Url.GetLeftPart(UriPartial.Authority) + "/CPCDownload.aspx?IsPDF=False?UserID=" + this.CurrentUser.UserID.ToString();
 var file = WKHtmlToPdf(url);
 if (file != null)
 {
 Response.ContentType = "Application/pdf";
 Response.BinaryWrite(file);
 Response.End();
 }
}

public byte[] WKHtmlToPdf(string url)
{
 var fileName = " - ";
 var wkhtmlDir = "C:\\Program Files\\wkhtmltopdf\\";
 var wkhtml = "C:\\Program Files\\wkhtmltopdf\\wkhtmltopdf.exe";
 var p = new Process();

 p.StartInfo.CreateNoWindow = true;
 p.StartInfo.RedirectStandardOutput = true;
 p.StartInfo.RedirectStandardError = true;
 p.StartInfo.RedirectStandardInput = true;
 p.StartInfo.UseShellExecute = false;
 p.StartInfo.FileName = wkhtml;
 p.StartInfo.WorkingDirectory = wkhtmlDir;

 string switches = "";
 switches += "--print-media-type ";
 switches += "--margin-top 10mm --margin-bottom 10mm --margin-right 10mm --margin-left 10mm ";
 switches += "--page-size Letter ";
 p.StartInfo.Arguments = switches + " " + url + " " + fileName;
 p.Start();

 //read output
 byte[] buffer = new byte[32768];
 byte[] file;
 using(var ms = new MemoryStream())
 {
 while(true)
 {
 int read = p.StandardOutput.BaseStream.Read(buffer, 0,buffer.Length);

 if(read &lt;=0)
 {
 break;
 }
 ms.Write(buffer, 0, read);
 }
 file = ms.ToArray();
 }

 // wait or exit
 p.WaitForExit(60000);

 // read the exit code, close process
 int returnCode = p.ExitCode;
 p.Close();

 return returnCode == 0 ? file : null;
}
</code></pre>

Thanks Graham Ambrose and everyone else.

blocks|key|330508|text|查看wkhtmltopdf库的C#包装库(使用P/Invoke)：https://github.com/pruiz/WkHtmlToXSharp|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|330509|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/pruiz/WkHtmlToXSharp^0|X|13|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Check out the C# wrapper library (using P/Invoke) for the wkhtmltopdf library: <a href="https://github.com/pruiz/WkHtmlToXSharp" rel="noreferrer">https://github.com/pruiz/WkHtmlToXSharp</a>

blocks|key|332039|text|通常返回代码=0，如果pdf文件创建正确，并且没有创建correctly.If，则该值在-ve范围内。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|332040|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Generally return code =0 is coming if the pdf file is created properly and correctly.If it's not created then the value is in -ve range.

blocks|key|332052|text|感谢你的问题/答案/上面的所有评论。这是我在为WKHTMLtoPDF编写自己的C#包装器时发现的，它回答了我遇到的几个问题。我最终在一篇博客文章中写下了这一点--这篇文章也包含了我的包装器(你肯定会从上面的条目中看到渗入我代码的“灵感”……)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|332053|Making+PDFs+from+HTML+in+C#+using+WKHTMLtoPDF|offset|length|332054|再次感谢你们！|332055|entityMap|0|LINK|mutability|MUTABLE|url|https://blog.johnnyreilly.com/2012/04/making-pdfs-from-html-in-c-using.html^0|0|0|19|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Thanks for the question / answer / all the comments above. I came upon this when I was writing my own C# wrapper for WKHTMLtoPDF and it answered a couple of the problems I had. I ended up writing about this in a blog post - which also contains my wrapper (you'll no doubt see the "inspiration" from the entries above seeping into my code...)

<a href="https://blog.johnnyreilly.com/2012/04/making-pdfs-from-html-in-c-using.html" rel="nofollow noreferrer">Making PDFs from HTML in C# using WKHTMLtoPDF</a>

Thanks again guys!

blocks|key|3306698|text|好了，这是一个古老的问题，但也是一个很好的问题。由于我没有找到一个好的答案，所以我提出了自己的答案:)+Also,+I've+posted+this+super+simple+project+to+GitHub.|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3306699|下面是一些示例代码：|3306700|var+pdfData+=+HtmlToXConverter.ConvertToPdf("<h1>SOO+COOL!</h1>");|code-block|syntax|javascript|3306701|以下是一些关键点：|3306702|3306703|无P/Invoke|unordered-list-item|3306704|无创建新进程|3306705|无文件系统(全部在内存中)具有智能感知等功能的|3306706|本机.NET+DLL。|3306707|能够生成PDF或PNG+DLL|3306708|3306709|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/TimothyKhouri/WkHtmlToXDotNet^0|1G|1I|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|17|8|@]|9|@$A|18|B|19|1|1A]]|C|$]]|$1|D|3|E|5|6|7|1B|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|1C|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1D|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|1E|8|@]|9|@]|C|$]]|$1|N|3|O|5|P|7|1F|8|@]|9|@]|C|$]]|$1|Q|3|R|5|P|7|1G|8|@]|9|@]|C|$]]|$1|S|3|T|5|P|7|1H|8|@]|9|@]|C|$]]|$1|U|3|V|5|P|7|1I|8|@]|9|@]|C|$]]|$1|W|3|X|5|P|7|1J|8|@]|9|@]|C|$]]|$1|Y|3|-4|5|6|7|1K|8|@]|9|@]|C|$]]|$1|Z|3|-4|5|6|7|1L|8|@]|9|@]|C|$]]]|10|$11|$5|12|13|14|C|$15|16]]]]

OK, so this is an old question, but an excellent one. And since I did not find a good answer, I made my own :) <a href="https://github.com/TimothyKhouri/WkHtmlToXDotNet">Also, I've posted this super simple project to GitHub.</a>

Here is some sample code:

<pre><code>var pdfData = HtmlToXConverter.ConvertToPdf("&lt;h1&gt;SOO COOL!&lt;/h1&gt;");
</code></pre>

Here are some key points:

<ul>
<li>No P/Invoke</li>
<li>No creating of a new process</li>
<li>No file-system (all in RAM)</li>
<li>Native .NET DLL with intellisense, etc.</li>
<li>Ability to generate a PDF or PNG (<code>HtmlToXConverter.ConvertToPng</code>)</li>
</ul>

blocks|key|3094078|text|我对此的看法是2018年的东西。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3094079|我正在使用异步。我正在往返于wkhtmltopdf。我创建了一个新的StreamWriter，因为wkhtmltopdf默认情况下需要utf-8，但是当进程启动时，它被设置为其他值。|3094080|我没有包含太多的参数，因为这些参数因用户而异。您可以使用additionalArgs添加所需的内容。|3094081|我删除了p.WaitForExit(...)因为我没有处理如果它失败了，它仍然会挂在await+tStandardOutput上。如果需要超时，则必须使用取消令牌或超时对不同的任务调用Wait(...)并进行相应的处理。|offset|length|style|CODE|3094082|public+async+Task<byte[]>+GeneratePdf(string+html,+string+additionalArgs)
{
++++ProcessStartInfo+psi+=+new+ProcessStartInfo
++++{
++++++++FileName+=+@"C:\Program+Files\wkhtmltopdf\wkhtmltopdf.exe",
++++++++UseShellExecute+=+false,
++++++++CreateNoWindow+=+true,
++++++++RedirectStandardInput+=+true,
++++++++RedirectStandardOutput+=+true,
++++++++RedirectStandardError+=+true,
++++++++Arguments+=+"-q+-n+"+%2B+additionalArgs+%2B+"+-+-";
++++};

++++using+(var+p+=+Process.Start(psi))
++++using+(var+pdfSream+=+new+MemoryStream())
++++using+(var+utf8Writer+=+new+StreamWriter(p.StandardInput.BaseStream,+
+++++++++++++++++++++++++++++++++++++++++++++Encoding.UTF8))
++++{
++++++++await+utf8Writer.WriteAsync(html);
++++++++utf8Writer.Close();
++++++++var+tStdOut+=+p.StandardOutput.BaseStream.CopyToAsync(pdfSream);
++++++++var+tStdError+=+p.StandardError.ReadToEndAsync();

++++++++await+tStandardOutput;
++++++++string+errors+=+await+tStandardError;

++++++++if+(!string.IsNullOrEmpty(errors))+{+/*+deal/log+with+errors+*/+}

++++++++return+pdfSream.ToArray();
++++}
}|code-block|syntax|javascript|3094083|我没有包含在其中的东西，但是如果你有图像，css或其他东西，wkhtmltopdf在渲染html页面时必须加载，这些东西可能会很有用：|3094084|cookie+您可以使用--|3094085|unordered-list-item|3094086|传递身份验证cookie。您可以使用href设置指向服务器的基本标记，wkhtmltopdf将在需要时使用它作为|3094087|。|3094088|entityMap^0|0|0|0|16|L|2K|9|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|15|8|@$H|16|I|17|J|K]|$H|18|I|19|J|K]]|9|@]|A|$]]|$1|L|3|M|5|N|7|1A|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1B|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1C|8|@]|9|@]|A|$]]|$1|U|3|-4|5|V|7|1D|8|@]|9|@]|A|$]]|$1|W|3|X|5|V|7|1E|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1F|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|11|$]]

My take on this with 2018 stuff.

I am using async. I am streaming to and from wkhtmltopdf. I created a new StreamWriter because wkhtmltopdf is expecting utf-8 by default but it is set to something else when the process starts.

I didn't include a lot of arguments since those varies from user to user. You can add what you need using additionalArgs.

I removed p.WaitForExit(...) since I wasn't handling if it fails and it would hang anyway on <code>await tStandardOutput</code>. If timeout is needed, then you would have to call <code>Wait(...)</code> on the different tasks with a cancellationtoken or timeout and handle accordingly.

<pre><code>public async Task&lt;byte[]&gt; GeneratePdf(string html, string additionalArgs)
{
 ProcessStartInfo psi = new ProcessStartInfo
 {
 FileName = @"C:\Program Files\wkhtmltopdf\wkhtmltopdf.exe",
 UseShellExecute = false,
 CreateNoWindow = true,
 RedirectStandardInput = true,
 RedirectStandardOutput = true,
 RedirectStandardError = true,
 Arguments = "-q -n " + additionalArgs + " - -";
 };

 using (var p = Process.Start(psi))
 using (var pdfSream = new MemoryStream())
 using (var utf8Writer = new StreamWriter(p.StandardInput.BaseStream, 
 Encoding.UTF8))
 {
 await utf8Writer.WriteAsync(html);
 utf8Writer.Close();
 var tStdOut = p.StandardOutput.BaseStream.CopyToAsync(pdfSream);
 var tStdError = p.StandardError.ReadToEndAsync();

 await tStandardOutput;
 string errors = await tStandardError;

 if (!string.IsNullOrEmpty(errors)) { /* deal/log with errors */ }

 return pdfSream.ToArray();
 }
}
</code></pre>

Things I haven't included in there but could be useful if you have images, css or other stuff that wkhtmltopdf will have to load when rendering the html page:

<ul>
<li>you can pass the authentication cookie using --cookie</li>
<li>in the header of the html page, you can set the base tag with href pointing to the server and wkhtmltopdf will use that if need be</li>
</ul>

I'm attempting to create a PDF file from an HTML file. After looking around a little I've found: <a href="http://code.google.com/p/wkhtmltopdf/" rel="noreferrer">wkhtmltopdf</a> to be perfect. I need to call this .exe from the ASP.NET server. I've attempted:

<pre><code> Process p = new Process();
 p.StartInfo.UseShellExecute = false;
 p.StartInfo.FileName = HttpContext.Current.Server.MapPath("wkhtmltopdf.exe");
 p.StartInfo.Arguments = "TestPDF.htm TestPDF.pdf";
 p.Start();
 p.WaitForExit();
</code></pre>

With no success of any files being created on the server. Can anyone give me a pointer in the right direction? I put the wkhtmltopdf.exe file at the top level directory of the site. Is there anywhere else it should be held?

<hr>

Edit: If anyone has better solutions to dynamically create pdf files from html, please let me know.

Calling wkhtmltopdf to generate PDF from HTML

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我正在尝试从HTML文件创建PDF文件。环顾四周后，我发现：是完美的。我需要从ASP.NET服务器调用这个.exe。我尝试过：    Process p = new Process();    p.StartInfo.UseShellExecute = false;    p.StartInfo.FileName = ...

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