Solved

How to convert 16 bit byte to 2 string characters

Posted on 2008-10-29
6
1,150 Views
Last Modified: 2012-05-05
I have a C# app that reads binary data from an app through a C++ import.

The data i am trying to read is held in short integers so i need to split the int16 into its byte pairs and read the values into its two strings.

I do it in VB.net with the following function
 Public Shared Function ByteToString(ByVal bytStr As Byte) As String
        Dim strCon As String        'hold the string
        strCon = Convert.ToChar(bytStr)
        'return the string
        Return strCon
    End Function

But i cannot find the same functionality in C#.

Supposedly this should work but all i store then is the numeric value of the byte
bytByteArr[1].ToString();

Thanks for any help!!
0
Comment
Question by:Halon
  • 3
  • 3
6 Comments
 

Author Comment

by:Halon
ID: 22836177
Little more info

I read in from a byte array 2 bytes at a time
'read the next 2 bytes in                  
                bytByteArr = brContents.ReadBytes(2);

for example first two bytes are 73 and 114 - which are the letters I and r
Then i get 101 and 110 - which are e and n respectively

Hope this helps my clear as mud question
0
 
LVL 13

Expert Comment

by:numberkruncher
ID: 22836332
If you have a 16-bit integer:

int input = 1234;
int lower = input & 0x00FF;
int upper = (input & 0xFF00) >> 4;
0
 
LVL 13

Expert Comment

by:numberkruncher
ID: 22836371
Sorry, that should be a shift of 8-bits not 4!

If you have a 16-bit integer:

int input = 1234;

int lower = input & 0x00FF;

int upper = (input & 0xFF00) >> 8;

Open in new window

0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 13

Accepted Solution

by:
numberkruncher earned 500 total points
ID: 22836427
If you have an array of bytes and you want to convert them to a string you can use the following:
// You get this from the file.

byte[] bytes = new byte[] { 73, 114 };

// Then convert byte array to string, you can use a different encoding if you need to.

string result = System.Text.Encoding.Default.GetString(bytes);

Open in new window

0
 

Author Comment

by:Halon
ID: 22841416
numberkruncher, that works great. i think i am taking the long way at getting what i need done but your idea gets my string out of the binary data.

A question though. I know the field i am grabbing can be up to 20 ints long, thats 40 short ints that i grab. At any point there can be null terminators within the data ('\0' i belive is the code from C++ i am grabbing). How can i strip this from my string or toss it as i create it?

Thanks!!
0
 

Author Comment

by:Halon
ID: 22841747
Its OK, i found it.

//set the char we want to trim, in this case the nulls
        char[] trimNulls = { '\0' };

        //return the result
        return strTextResult.Trim(trimNulls);

Thanks!!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: Najam
Having new technologies does not mean they will completely replace old components.  Recently I had to create WCF that will be called by VB6 component.  Here I will describe what steps one should follow while doing so, please feel free to post any qu…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This tutorial demonstrates a quick way of adding group price to multiple Magento products.
A short film showing how OnPage and Connectwise integration works.

919 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now