Invalid Argument in For Loop

[computerpublic]

/*No more errors. My input to the program is letter "e" which is enclosed within a text file in c:\\folder9. The decimal equivalent of letter "e" is 101. When I run 101 thru the BitArray, it evaluates all bits as false which is NOT CORRECT.*/
using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Applica
{
class Program
{
static void Main(string[] args)
{
DirectoryInfo da = new DirectoryInfo("C:\\Folder9");
FileInfo[] Arr = da.GetFiles();
if (Arr.Length == 0)
{
throw new InvalidOperationException("No files found.");
}
// No need to loop through the array just to get the last item:
FileInfo ap = Arr[Arr.Length - 1];
long Totbyte = ap.Length;
string filePath = ap.FullName;
Console.WriteLine("Total Bytes = {0} bytes", Totbyte);
// GetTempFileName *creates* the file, so it always exists:
string temPath = Path.GetTempFileName();
byte[] data = File.ReadAllBytes(filePath);
File.WriteAllBytes(temPath, data);

        byte\[\] dataB = new byte\[1\];
        BitArray bits = new BitArray(dataB);
        Console.WriteLine("length= {0}",bits.Length);
        for (long counter = 0; counter < Totbyte; counter++)
        {
            dataB\[0\] = data\[counter\];
            Console.WriteLine("{0}", dataB\[0\]);
            for (int count = 0; count < bits.Length; count++)
            {
                if (bits\[count\] == true)
                    Console.WriteLine("{0}", bits\[count\]);
                if (bits\[count\] == false)
                    Console.WriteLine("{0}", bits\[count\]);
            }
        }
    }
}

}

[Lost User]

computerpublic wrote:

When I run 101 thru the BitArray, it evaluates all bits as false which is NOT CORRECT

But the problem is that you do not run that value through it. Your code is:

        byte\[\] dataB = new byte\[1\];
        // set bits to the content of dataB, which is null at this point
        BitArray bits = new BitArray(dataB);
        Console.WriteLine("length= {0}",bits.Length);
        for (long counter = 0; counter < Totbyte; counter++)
        {
            dataB\[0\] = data\[counter\];
            Console.WriteLine("{0}", dataB\[0\]);
            // bits still does not contain any value
            for (int count = 0; count < bits.Length; count++)
            {
                // this can be simplified
                if (bits\[count\] == true)
                    Console.WriteLine("{0}", bits\[count\]);
                if (bits\[count\] == false)
                    Console.WriteLine("{0}", bits\[count\]);
            }
        }

It should be

        byte\[\] dataB = new byte\[1\];
        for (long counter = 0; counter < Totbyte; counter++)
        {
            dataB\[0\] = data\[counter\];
            BitArray bits = new BitArray(dataB);
            Console.WriteLine("length= {0}",bits.Length);
            Console.WriteLine("{0}", dataB\[0\]);
            for (int count = 0; count < bits.Length; count++)
            {
                Console.Write(bits\[count\] ? "1" : "0");
            }
            Console.WriteLine("");
        }

[computerpublic]

I am noticing that the programs default operation is to evaluate the Most Significant Bit First and it evaluates the Least Significant Bit Last. I was not expecting this behavior. This this always the case the default case? Can I change the default operation to do LSB to MSB?

[Lost User]

See http://msdn.microsoft.com/en-us/library/x1xda43a(v=vs.110).aspx[^].