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C# ASCII Table
This C# program generates an ASCII table. It displays all characters in ASCII.ASCII table. This is a quick reference for ASCII character codes.
We use a simple C# program to generate this dynamically. We see the ASCII character codes for the first 128 characters. Please notice the C# code at the bottom that generates this table.
Table. Here are the first 128 characters. Some of the characters are escaped on the ASCII column. Many of the characters are control characters, which are not widely used. They are not easy to display.
ASCII table
Decimal ASCII Hex
0 control 00
1 control 01
2 control 02
3 control 03
4 control 04
5 control 05
6 control 06
7 control 07
8 control 08
9 \t 09
10 \n 0A
11 \v 0B
12 \f 0C
13 \r 0D
14 control 0E
15 control 0F
16 control 10
17 control 11
18 control 12
19 control 13
20 control 14
21 control 15
22 control 16
23 control 17
24 control 18
25 control 19
26 control 1A
27 control 1B
28 control 1C
29 control 1D
30 control 1E
31 control 1F
32 space 20
33 ! 21
34 " 22
35 # 23
36 $ 24
37 % 25
38 & 26
39 ' 27
40 ( 28
41 ) 29
42 * 2A
43 + 2B
44 , 2C
45 - 2D
46 . 2E
47 / 2F
48 0 30
49 1 31
50 2 32
51 3 33
52 4 34
53 5 35
54 6 36
55 7 37
56 8 38
57 9 39
58 : 3A
59 ; 3B
60 < 3C
61 = 3D
62 > 3E
63 ? 3F
64 @ 40
65 A 41
66 B 42
67 C 43
68 D 44
69 E 45
70 F 46
71 G 47
72 H 48
73 I 49
74 J 4A
75 K 4B
76 L 4C
77 M 4D
78 N 4E
79 O 4F
80 P 50
81 Q 51
82 R 52
83 S 53
84 T 54
85 U 55
86 V 56
87 W 57
88 X 58
89 Y 59
90 Z 5A
91 [ 5B
92 \ 5C
93 ] 5D
94 ^ 5E
95 _ 5F
96 ` 60
97 a 61
98 b 62
99 c 63
100 d 64
101 e 65
102 f 66
103 g 67
104 h 68
105 i 69
106 j 6A
107 k 6B
108 l 6C
109 m 6D
110 n 6E
111 o 6F
112 p 70
113 q 71
114 r 72
115 s 73
116 t 74
117 u 75
118 v 76
119 w 77
120 x 78
121 y 79
122 z 7A
123 { 7B
124 | 7C
125 } 7D
126 ~ 7E
127 control 7F
Console program. This program is a console program that uses the PadRight method to pad each column so it appears correctly. It uses a simple for-loop construct to loop through all the ASCII characters. The IsControl and IsWhitespace methods are also used.
PadRight, PadLeftchar.IsControlchar.IsWhiteSpace
Tip: A char switch has a special performance advantage—more information is available.
C# program that generates ASCII table
using System;
class Program
{
static void Main()
{
Console.Write("Decimal".PadRight(10));
Console.Write("ASCII".PadRight(10));
Console.Write("Hex".PadRight(10));
Console.WriteLine();
int min = 0;
int max = 128;
for (int i = min; i < max; i++)
{
// Get ascii character.
char c = (char)i;
// Get display string.
string display = string.Empty;
if (char.IsWhiteSpace(c))
{
display = c.ToString();
switch (c)
{
case '\t':
display = "\\t";
break;
case ' ':
display = "space";
break;
case '\n':
display = "\\n";
break;
case '\r':
display = "\\r";
break;
case '\v':
display = "\\v";
break;
case '\f':
display = "\\f";
break;
}
}
else if (char.IsControl(c))
{
display = "control";
}
else
{
display = c.ToString();
}
// Write table row.
Console.Write(i.ToString().PadRight(10));
Console.Write(display.PadRight(10));
Console.Write(i.ToString("X2"));
Console.WriteLine();
}
}
}
Summary. We saw all the ASCII characters and their decimal representation, using C# code. This is useful for converting between characters—such as between upper and lowercase letters—in an optimized way.