[C#] Write hex to file

[jbeitz107]

I have hex code like the following I would like to write to a file. Can someone give me a simple example of how this is done? Thank you.

Hex Code =

012003000058020000100000000100000000000000000001

 

[Bergthor]

Do you know the Hex Code you want to write to a file or are you pulling it from somewhere?

If you know the Hex you want to write to a file something like

using System.IO;

class Program
{
    static void Main()
    {
	using (StreamWriter writer =
	    new StreamWriter("hex.txt"))
	{
	    writer.Write("012003000058020000100000000100000000000000000001");
	}
    }
}

I'm assuming your problem is more complex than this so maybe explain a little more?

 

[jbeitz107]

I know the exact hex. I just need to write it to a file using C#. Thanks.

 

[Bergthor]

Pulled from MSDN I know it's not a string but shouldn't matter

class WriteTextFile
{
    static void Main()
    {
        // Example #2: Write one string to a text file.
        string text = "Insert hex";
        // WriteAllText creates a file, writes the specified string to the file,
        // and then closes the file.    You do NOT need to call Flush() or Close().
        System.IO.File.WriteAllText(@"C:\Users\Public\TestFolder\Hex.txt", text);

 

[Negata]

Are you sure you want to write a hex code as a string into a file? Because if that's what you really want then I imagine you would've asked for how to write any text into a file. A more useful and therefore probable case is that you want to convert the hex string into a binary string and write that into a binary file at a specific location.

 

[jbeitz107]

I need to write the hex as hex and not just text, Sam I am. <<A little Dr. Seus humor there lol.

 

[GigaToni]

You mean so you can view it (for example) with HxD?

If so then it's binary file writing.

 

[Negata]

.. and in that case, this Q&A should take you a little closer to what you want

You must be registered to see links

And then this method is probably what will do the trick of writing the byte array into a file at a given position

You must be registered to see links