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To represent Int32 as a Hexadecimal string in C#, use the ToString() method and set the base as the ToString() method's second parameter i.e. 16 for Hexadecimal. Int32 represents a 32-bit signed integer.
Hexadecimal Number String. The “Hexadecimal” or simply “Hex” numbering system uses the Base of 16 system and are a popular choice for representing long binary values because their format is quite compact and much easier to understand compared to the long binary strings of 1's and 0's.
Console.WriteLine ("Hex: {0:X}", nNum);
The X formatter outputs uppercase hex chars. Use a lowercase x for lowercase hex chars.
i.ToString("x");
int i=10;
Console.WriteLine("{0:X4}", i);
Outputs hex with a size specifier.
you can also use string interpolation
int i=10;
Console.WriteLine($"{i:X4}");
int i=10;
Console.WriteLine("{0:x}", i);
or if you want 'A':
int i=10;
Console.WriteLine("{0:X}", i);
Int32 num = 1024;
Using string interpolation:Console.WriteLine("{0:X}", num);
Using built-in numeric string formatting:Console.WriteLine(num.ToString("X"));
400
Console.WriteLine(num.ToString("X4"));
0400
or
Console.WriteLine("0x{0:x8}", num);
0x00000400
You need to add a format specifier:
Console.WriteLine("{0:x}", i);
Change the format to {0:x}.
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