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Computer Conversions (Hexadecimal, Decimal, Octal and Binary)

, 5 Feb 2007
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An article to demonstrate how to convert from one base 2, 8, 10 or 16 to another of base 2, 8, 10, 16
Sample image

Introduction

This code was written to show how to convert from Hexadecimal, Decimal, Octal or Binary out to a Hexadecimal, Decimal, Octal or Binary value. Many functions demonstrate Hex2Bin, Bin2Hex, Hex2Dec, Dec2Hex, etc. This code will show you how easy it is to convert between any of these bases (2, 8, 10, 16).

Background

It is good to understand how binary conversions work. Take a look here for more information.

Using the Code

Enter an input value, and see what the output value is. It's that easy. Use the arrows to add or subtract the value.

The two main functions that deal with the conversions include Input2Binary() and Binary2Output(). From these functions, you can take any input type and convert it to binary, and then convert that binary value to any output type.

The Input2Binary() function contains this code:

// Convert the current input into binary 
// NOTE: convert string from base 'n'
switch( numberStyle.ToUpper() )
{
    case "HEXADECIMAL":
        currInput = Convert.ToUInt64(txtObject, 16);
        break;
    case "DECIMAL":
        currInput = Convert.ToUInt64(txtObject, 10);
        break;
    case "OCTAL":
        currInput = Convert.ToUInt64(txtObject, 8);
        break;
    case "BINARY":
        currInput = Convert.ToUInt64(txtObject, 2);
        break;
}

The Binary2Output() function contains this code:

// Convert the int to the correct output
switch( numberStyle.ToUpper() )
{
    case "HEXADECIMAL":
        txtObject = Convert.ToString(currVal, 16).ToUpper();
        break;
    case "DECIMAL":
        txtObject = Convert.ToString(currVal, 10);
        break;
    case "OCTAL":
        txtObject = Convert.ToString(currVal, 8);
        break;
    case "BINARY":
        txtObject = Convert.ToString(currVal, 2);
        break;
}

History

  • 5th February, 2007: First version

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Scott Klawitter
Web Developer
United States United States
Scott Klawitter programs mainly in Visual Studio .NET with a focus in C# development.

Comments and Discussions

 
GeneralWindows calculator PinmvpMark Nischalke5-Feb-07 17:38 
GeneralRe: Windows calculator PinmemberPatrick Sears5-Feb-07 20:38 
I have seen no less than 3 threads on the MSDN forums in the past week asking how to do this. It may be trivial, but if one wants to do it programmatically, the Windows Calculator isn't much help so it's good for beginners.
GeneralRe: Windows calculator PinmvpMark Nischalke6-Feb-07 1:34 
GeneralRe: Windows calculator PinmemberVasudevan Deepak Kumar31-Oct-07 20:49 
GeneralGrumpy are we? PinmemberShawn Poulson6-Feb-07 3:41 
GeneralRe: Grumpy are we? Pinmemberalrsds21-Sep-09 17:26 

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