Convert Integer to Ascii string in C#

Question

I want to convert an integer to 3 character ascii string. For example if integer is 123, the my ascii string will also be "123" . If integer is 1, then my ascii will be "001" . If integer is 45, then my ascii string will be "045" . So far I've tried Convert.ToString but could not get the result. How?

Answer 1

int myInt = 52;
string myString = myInt.ToString("000");

myString is "052" now. Hope it will help

Answer 2

Answer for the new question:

You're looking for String.PadLeft . Use it like myInteger.ToString().PadLeft(3, '0') . Or, simply use the "0" custom format specifier . Like myInteger.ToString("000") .

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Answer for the original question, returning strings like "0x31 0x32 0x33" :

String.Join(" ",myInteger.ToString().PadLeft(3,'0').Select(x=>String.Format("0x{0:X}",(int)x))

Explanation:

• The first ToString() converts your integer 123 into its string representation "123" .
• PadLeft(3,'0') pads the returned string out to three characters using a 0 as the padding character
• Strings are enumerable as an array of char , so .Select selects into this array
• For each character in the array, format it as 0x then the value of the character
• Casting the char to int will allow you to get the ASCII value (you may be able to skip this cast, I am not sure)
• The "X" format string converts a numeric value to hexadecimal
• String.Join(" ", ...) puts it all back together again with spaces in between

Answer 3

It depends on if you actually want ASCII characters or if you want text. The below code will do both.

int value = 123;
// Convert value to text, adding leading zeroes.
string text = value.ToString().PadLeft(3, '0');
// Convert text to ASCII.
byte[] ascii = Encoding.ASCII.GetBytes(text);

Realise that .Net doesn't use ASCII for text manipulation. You can save ASCII to a file, but if you're using string objects, they're encoded in UTF-16.