Hex Converter

• Download demo project (source included) - 11.0 Kb

Introduction

This article is about how you would go about converting numeric values to hexadecimal and vice versa. The main reason why I did this program is to help me to cheat when playing computer games, mainly role-playing ones cos I normally need to find the correct hex data in those save game file and furthermore I do not have a good hex editor to help me do those conversion. :)

Using the code

The main code used for the conversion are from the System.Convert class. Below is the code that is used to convert a string to unsigned integer while checking for overflow, and then convert it to hexadecimal format before showing it as a string in a text box.

// To hold our converted unsigned integer32 value
uint uiDecimal = 0;

try
{
    // Convert text string to unsigned integer
    uiDecimal = checked((uint)System.Convert.ToUInt32(tbDecimal.Text));
}

catch (System.OverflowException exception) 
{
    // Show overflow message and return
    tbHex.Text = "Overflow";
    return;
}

// Format unsigned integer value to hex and show in another textbox
tbHex.Text = String.Format("{0:x2}", uiDecimal);

and vice versa

// To hold our converted unsigned integer32 value
uint uiHex = 0;

try
{
    // Convert hex string to unsigned integer
    uiHex = System.Convert.ToUInt32(tbHex.Text, 16);
}

catch (System.OverflowException exception) 
{
    // Show overflow message and return
    tbDecimal.Text = "Overflow";
    return;
}

// Format it and show as a string
tbDecimal.Text = uiHex.ToString();

Conclusion

This is my first attempt at C# and WinForms so I believe by starting with such simple and small programs, it will eventually build up my skills and knowledge to attempt bigger ones. :)