I want read from the file and write line by line it in another file.

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I want read from the file and write line by line it in another file.
of course first file consist of string code with length 20 and another file is hex code and I convert string to hex with this code:

C#

string hex = "";
                   foreach (char c in sline)
                   {
                       int tmp = c;
                       hex += String.Format("{0:x2}", (uint)System.Convert.ToUInt32(tmp.ToString()));
                   }

sline is string code in first file.
how can do this?

Posted 10-Jul-12 3:39am

omidfarvaha

Updated 10-Jul-12 3:46am

ambarishtv

v3

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[no name] 10-Jul-12 9:57am

Open first file, read the line, do whatever you want to do with the input, write to second file. Do you have a specific question about something?

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Roman Lerman · Answer 1 · 2012-07-10T04:18:00

Here is sample code. It may be good example of what you need to do.
That code is not tested!

C#

void Foo(string inputFilePath, string outputFilePath)
        {

            try
            {
                if (File.Exists(inputFilePath))
                {
                    //open output stream
                    using (BinaryWriter bw = new BinaryWriter(File.Create(inputFilePath)))
                    {
                        //open input stream 
                        //!!! specify Encoding !!!
                        using (BinaryReader br = new BinaryReader(File.Open(inputFilePath, FileMode.Open, Encoding.ASCII)))
                        {

                            // Position and length variables.
                            int pos = 0;

                            // Use BaseStream.
                            int length = (int)br.BaseStream.Length;
                            while (pos < length)
                            {
                                var endOfLine = "\r\n"; // \n Or \r

                                // Read char and write char to output file
                                bw.Write(String.Format("0x{0:X}{1}", (int)br.ReadChar()), endOfLine);



                                // Advance our position variable.
                                pos += sizeof(int);
                            }
                        }
                    }
                }
                else
                {
                    throw new FileNotFoundException("Input file not found!",inputFilePath);
                }
            }
            catch (Exception ex)
            {
                System.Diagnostics.Trace.WriteLine(ex.Message);
            }

        }


;)

charles henington · Answer 2 · 2012-07-10T18:53:00

C#

public void ConvertToHex(string inputFilePath, string outputFilePath)
        {
            using (StreamWriter writer = new StreamWriter(outputFilePath))
            {
                using (StreamReader reader = new StreamReader(inputFilePath))
                {
                    string text = reader.ReadToEnd();
                    foreach (char value in text)
                    {
                        writer.Write(string.Format("{0:x2}", (int)value));
                    }
                }
            }
        }

Naga KOTA · Answer 3 · 2012-07-10T20:51:00

private string HexAsciiConvert(string hex)

{

StringBuilder sb = new StringBuilder();

for (int i = 0; i <= hex.Length - 2; i += 2)

{

sb.Append(Convert.ToString(Convert.ToChar(Int32.Parse(hex.Substring(i, 2),

System.Globalization.NumberStyles.HexNumber))));

}

return sb.ToString();

}

I want read from the file and write line by line it in another file.

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