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C# - Save XML's plain text as PDF instead of converting [duplicate]

I am trying to save xml file as PDF as it is. In other words, I am trying to create PDF file that shows content of XML like a screenshot (like raw screenshot). My client somehow needs it like this. I couldn't really find the same question on stackoverflow. Is there anyway I can do this using iText or some other library?
Thank you!

First extract your text from XML file:
XmlDocument doc = new XmlDocument();
doc.Load("c:\\temp.xml");
string myText;
foreach(XmlNode node in doc.DocumentElement.ChildNodes){
myText= node.InnerText; //or loop through its children as well
}
Then create a PDF file and pass this text into it
in this case here I use PDFFlow library to create pdf documents
var DocumentBuilder.New()
.AddSection().AddParagraphToSection(myText).ToDocument()
.Build("Result.PDF");

If you load the xml in a browser you can easily save to searchable PDF
In a shell call (replace msedge with chrome if necessary)
"path to\msedge.exe" --headless --disable-gpu --print-to-pdf="out path\xml.pdf" --enable-logging "file://path to A\file.xml"
Enable logging helps as it can take a long time to process without any visual progress.
[0818/231038.640:INFO:headless_shell.cc(648)] Written to file ...\xml.pdf.
You can also add --print-to-pdf-no-header. Also if adding some style consider --run-all-compositor-stages-before-draw but I have no idea if that works for xml.
ForGet Image --screenshot as a 40 Page high XML as JPEG does NOT translate well to PDF. I tried :-)
If you want that as an image PDF then Re-Print the PDF to PDF using a command line viewer such as this since it is ONLY Print As Image output :-) also note it can in addition read the XML in Black and White (NO linting).
But have not tested how well it does XML2PDF via command line print
SumatraPDF -print-to "My Print to PDF" "path to\filename.pdf" (or xml in mono)
Note "My Print to PDF" is a promptless port you need to configure as required.

File.ReadAllText does not return full content in C#

In my c# program, I have an image which is successfully stored in a byte[] data called bytes. I successfully write it into a .txt file using the following code
using (FileStream file = new FileStream("text.txt", FileMode.Create, FileAccess.Write))
{
file.Write(bytes, 0, numToWrite);
file.Close();
}
The above code stores the exact content I wish to store.
Whenever I wish to read the content of the file, text.txt, into textbox I only get the first line or little part of the first line. But when I open the file, text.txt, I see the complete content.
This is the code I use to read the file
string kk = File.ReadAllText("text.txt");

You have said at the start of the question that you have a byte[] that you are writing into the file. It's not clear why you decided not to use File.WriteAllBytes but let's assume that your code is correctly writing all the data into the file called "text.txt", which has been explained in comments does not magically make this a text file.
Using File.ReadAllText is not going to work because The data in the file is binary data, not text. As you can see from the remarks on the documentation, it will try to decide the encoding of the text file (which won't work because it contains binary data) and will do end of line processing which you won't want for a binary file.
The best way to read the data back is to use File.ReadAllBytes, which gives you back a byte[], just like you started with.

How to read file in C# from POST data from web

Basically, I'm building a website that allows user to upload file.
From the front end (JavaScript), the user will browse a file, I can get the site to send POST data (the parameter "UploadInput" and it's value, which the value is the file)
In the backend (C#), I want to make a copy of the file and save it in a specific path.
Below is the way I did it.
var files = Request.Files;
file[0].SaveAs("\temp\\" + file[0].FileName);
The problem I ran into is that I got the error message saying index out of range. I tried Response.Write(files.Count) and it gives me 0 instead of 1.
I'm wondering where I did wrong and how to fix it, or if there's a better way of doing it.
Thanks!
Edit:
I am using HttpFox to debug. From HttpFox, I can see that under POST data, parameter is "UploadInput" and the value is "test.txt"
Edit 2:
So I tried the way Marc provides, and I have a different problem.
I am able to create a new file, however, the content is not copied over. I tried opening the new created file in notepad and all it says is "UploadInput = test.txt"

If they simply posted the file as the body content, then there will be zero "files" involved here, so file[0] will fail. Instead, you need to look at the input-stream, and simply read from that stream. For example:
using(var file = File.Create(somePath)) {
Request.InputStream.CopyTo(file);
}

write to specific position in .json file + serilaize size limit issue C#

I have a method that retrieves data from a json serialized string and writes it to a .json file using:
TextWriter writer = new StreamWriter("~/example.json");
writer2.Write("{\"Names\":" + new JavaScriptSerializer().Serialize(jsonData) + "}");
data(sample):
{"People":{"Quantity":"4"}, ,"info" :
[{"Name":"John","Age":"22"}, {"Name":"Jack","Age":"56"}, {"Name":"John","Age":"82"},{"Name":"Jack","Age":"95"}]
}
This works perfectly however the jsonData variable has content that is updated frequently. Instead of always deleting and creating a new example.json when the method is invoked,
Is there a way to write data only to a specific location in the file? in the above example say to the info section by appending another {"Name":"x","Age":"y"}?
My reasoning for this is I ran into an issue when trying to serialize a large amount of data using visual studio in C#. I got "The length of the string exceeds the value set on the maxJsonLength property” error. I tried to increase the max allowed size in the web.config using a few suggested methods in this forum but they never worked. As the file gets larger I feel I may run into the same issue again. Any other alternatives are always welcome. Thanks in advance.

I am not aware of a JSON serializer that works with chunks of JSON only. You may try using Json.NET which should work with larger data:
var data = JsonConvert.SerializeObject(new { Names = jsonData });
File.WriteAllText("example.json", data);

c# how to write a jpg image from request.binaryread

I have a flash app which sends raw data for a jpg image to a particular url Send.aspx . In Send.aspx I am using request.binaryread() to get the total request length and then read in the data to a byte array.
Then I am writing the data as jpg file to the server. The code is given below:
FileStream f = File.Create(Server.MapPath("~") + "/plugins/handwrite/uploads/" + filename);
byte[] data = Request.BinaryRead(Request.TotalBytes);
f.Write(data, 0, data.Length);
f.Close();
The file is getting created but there is no image in it. It always shows up as empty in any graphic viewer. What part am I missing. Am I supposed to use jpg encoding first before writing it to file? Thanks in advance

Well, you should use a using statement for your file stream, but other than that it looks okay to me.
A few suggestions for how to proceed...
Is it possible that the client isn't providing the data properly? Perhaps it's providing it as base64-encoded data?
Have you already read some data from the request body? (That could mess things up.)
I suggest you look closely at what you end up saving vs the original file:
Are they the same length? If not, which is longer?
If they're the same length, do their MD5 sums match?
If you look at both within a binary file editor, do they match at all? Any obvious differences?