Write a Stringformated Hex Block to registry in Binary value

Question

I am really get stucked with something. I have a string which includes hex values:

string creatorSid = @"01,05,00,00,00,00,00,05,15,00,00,00,10,b1,9d,4a,7a,85,7b,05, 79,05,b3,7c,ee,03,00,00";

I want to put that into the registrykey which requires binary values.

I tried this:

key.SetValue("creatorSID", creatorSid , RegistryValueKind.Binary);

But I got error message that it can not be converted.

Here is the complete Code so far:

class Program
{
    static void Main(string[] args)
    {
        String printerName = "Naked";
        RegistryKey key = Registry.LocalMachine.OpenSubKey(@"SYSTEM\CurrentControlSet\Control\Print\Printers\" + printerName , true);


        string security = "01,00,0c,80,d0,00,00,00,dc,00,00,00,00,00,00,00,14,00,00,00,02," +
                           "00,bc,00,07,00,00,00,00,00,24,00,0c,00,0f,00,01,05,00,00,00,00,00,05,15,00," +
                            "00,00,10,b1,9d,4a,7a,85,7b,05,79,05,b3,7c,ee,03,00,00,00,09,24,00,30,00,0f," +
                            "00,01,05,00,00,00,00,00,05,15,00,00,00,10,b1,9d,4a,7a,85,7b,05,79,05,b3,7c," +
                            "ee,03,00,00,00,09,14,00,00,00,00,10,01,01,00,00,00,00,00,03,00,00,00,00,00," +
                            "00,14,00,08,00,02,00,01,01,00,00,00,00,00,01,00,00,00,00,00,0a,14,00,00,00," +
                            "00,20,01,01,00,00,00,00,00,01,00,00,00,00,00,00,18,00,0c,00,0f,00,01,02,00," +
                            "00,00,00,00,05,20,00,00,00,20,02,00,00,00,0b,18,00,00,00,00,10,01,02,00,00," +
                            "00,00,00,05,20,00,00,00,20,02,00,00,01,01,00,00,00,00,00,05,12,00,00,00,01," +
                            "01,00,00,00,00,00,05,12,00,00,00";



        var data = Encoding.Unicode.GetBytes(security);

        try
        {
             key.SetValue("Security", data, RegistryValueKind.Binary);
        }
        catch (Exception exc)
        {

            Console.WriteLine(exc.Message);
            Console.WriteLine(exc.StackTrace);
        }



    }
}

It`s writing the entry now, but the values are changed. If i check the key there is: "30 00 31 00 ....." in it. But it must be: "01 00 0c 80....." (must be exactly the value from the string)

Sriram Sakthivel · Accepted Answer · 2014-08-14 08:03:54Z

5

When you have string, you've to use RegistryValueKind.String.

key.SetValue("creatorSID", creatorSid , RegistryValueKind.String);

If at all you need to use RegistryValueKind.Binary, you need to convert the string to byte[] and store it as byte[].

To store the value:

var data = Encoding.Unicode.GetBytes(creatorSid);
key.SetValue("creatorSID", data, RegistryValueKind.Binary);

To get the value back:

var data = (byte[])key.GetValue("creatorSID");
if (data != null)
{
    string creatorSID = Encoding.Unicode.GetString(data);
}

RegistryKey.SetValue

Edit: It seems you don't need to convert the , character as byte. Try the following.

To store the value:

var data = security.Split(',')
    .Select(x => Convert.ToByte(x, 16))
    .ToArray();
key.SetValue("creatorSID", data, RegistryValueKind.Binary);

To get the value back:

var data = (byte[])key.GetValue("creatorSID");
if (data != null)
{
    string creatorSID = string.Join(",", data.Select(x => x.ToString("x2")).ToArray());
}

edited Aug 14, 2014 at 8:03

answered Aug 14, 2014 at 6:37

Sriram Sakthivel

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3 Comments

Andre Dontsch Over a year ago

Thank you for your fast answer, but I have to store it as REG_BINARY entry. Is there an easy way to convert the string block to Byte?

Andre Dontsch Over a year ago

Thank you for your fast answer. If I try that, I get "unhandled exception" Input String was not in a correct format.

Sriram Sakthivel Over a year ago

@AndreDontsch Post your current code which throws that exception with the exception message and mention which line throws it. Edit your question with this info,

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