Converting between a hexadecimal string and a numeric type

1. Gets the hexadecimal value of each character in the ' string '.

2. Gets the character that corresponds to each value in the hexadecimal string. 、

3. Convert the hexadecimal string to shaping.

4. Converts a hexadecimal string to a floating-point type.

5. Convert the byte array to a hexadecimal string.

Each character in this case input is a hexadecimal value. The string is parsed into a character array, and Inter32 (char) is called for each character to obtain the corresponding numeric value.

Static voidMain (string[] args) {            stringinput ="Hello world!"; Char[] values =input.            ToCharArray (); foreach(CharLetterinchvalues) {                intValue =Convert.ToInt32 (letter); stringHexoutput =string. Format ("{0:x}", value); 0 means that the placeholder X or x represents the hexadecimal 12345.ToString ("x"); Build 3039 (16 binary) Console.WriteLine ("hexadecimal value Of{0} is {1}", letter, Hexoutput); }        }

Extended:
12345.ToString ("n"); Generate 12,345.00
12345.ToString ("C"); Generate ￥12,345.00
12345.ToString ("E"); Build 1.234500e+004
12345.ToString ("F4"); Build 12345.0000
12345.ToString ("X"); Build 3039 (16 binary)
12345.ToString ("P"); Generate 1,234,500.00%

Case analysis The hexadecimal value of the string corresponds to the output corresponding to the character. The split (char[]) method is first used to get each hexadecimal as a single string in the array. Then call ToInt32 (String,int32) to convert the 16 binary to a decimal value that is represented as an int. The first method uses ConvertFromUtf32 (Int32), which returns the character corresponding to the integer as a string. The second method is to convert the int display to Char

stringhexvalues="6C 6C 6F, 6F, 6C"; string[] Hexvaluesplit=hexvalues.split (' '); foreach(stringHexinchhexvaluesplit) {                intValue=convert.toint32 (Hex, -); stringStringValue =Char.                CONVERTFROMUTF32 (value); CharCharvalue = (Char) value; Console.WriteLine ("hexadecimal value = {0}, int value = {1}, char value = {2} or {3}", Hex, Value, StringValue, charvalue); }

The case demonstrates another way to convert a hexadecimal String to an integer, called the Int32.Parse (String,numberstyles) method

string "  - " ;             int num = int32.parse (hexstring,system.globalization.numberstyles.hexnumber);            Console.WriteLine (num);

Converting between a hexadecimal string and a numeric type