namespace ASCIItable        //  
{                           //
 public class Program      //
 {                         //
   static void Main()      //
   {
     ///*----------------------- console_settings ------------------------*///
     const int cWidth = 53;                     //  console width
     const int cHeight = 30;                    //  & height
     Console.SetWindowSize(cWidth, cHeight);    //
     Console.OutputEncoding = Encoding.UTF8;    //  Unicode Symbols
     /*----------------------------- CONSTANTES ----------------------------*/
     const int firstASCII = 32;
     const int lastASCII = 127;
     /*----------------------------- VARIABLES -----------------------------*/
     int index, hexIndex = 3,
         decimalNumber,
         hexRemainder;

     char printChar;
     char[] hexDigit = new char[hexIndex + 1];

     string outputCode,
            outHex;
     string[] outputLine = new string[lastASCII - firstASCII + 1];

     /*-------------------------------- HEAD -------------------------------*/
     Console.Clear();
     Console.Write("\n                   ASCII Tabelle                     " +
     /* cWidth: */ "\n==========================-==========================");

     for (index = 0; index < (lastASCII - firstASCII + 1); index++)
     {
       //  add Symbol & Prefix to Line
       printChar = Convert.ToChar(firstASCII + index);
       outputLine[index] = "    Zeichen: " + printChar;

       //  add Decimal & Prefix + Suffix to Line
       decimalNumber = firstASCII + index;
       outputCode = "    Code: " + Convert.ToString(decimalNumber).PadLeft(3) + " (dez)    ";
       outputLine[index] = outputLine[index] + outputCode;

       //  add Hex & Prefix + Suffix to Line
       outHex = ""; hexIndex = 0;
       while (decimalNumber % 16 >= 0 && hexIndex < 4)
       {
         hexRemainder = decimalNumber % 16;
         hexDigit[hexIndex] = (char)(hexRemainder < 10 ? hexRemainder + '0' : hexRemainder - 10 + 'A');
         outHex = hexDigit[hexIndex] + outHex;
         decimalNumber = decimalNumber / 16;
         hexIndex++;
       }
       outputLine[index] = outputLine[index] + outHex + " (hex)    ";
     }
     //  output:
     for (index = 0; index < (lastASCII - firstASCII + 1); index++)
     {
       Console.Write($"\n {outputLine[index]}");
     }
     /*-------------------------------- END --------------------------------*/
     Console.Write("\n Zum beenden Eingabetaste drücken..");
     Console.ReadLine();    //  wait for [enter]
     Console.Clear();       //
   }
 }
}