# XuGang

## C# 实现16进制和字符串之间转换的代码[转]

C# 代码：

string input = "Hello World!";
char[] values = input.ToCharArray();
foreach (char letter in values)
{
// Get the integral value of the character.
int value = Convert.ToInt32(letter);
// Convert the decimal value to a hexadecimal value in string form.
string hexOutput = String.Format("{0:X}", value);
Console.WriteLine("Hexadecimal value of {0} is {1}", letter, hexOutput);
}

Output:
Hexadecimal value of H is 48
Hexadecimal value of e is 65
Hexadecimal value of l is 6C
Hexadecimal value of l is 6C
Hexadecimal value of o is 6F
Hexadecimal value of is 20
Hexadecimal value of W is 57
Hexadecimal value of o is 6F
Hexadecimal value of r is 72
Hexadecimal value of l is 6C
Hexadecimal value of d is 64
Hexadecimal value of ! is 21

C# 代码：

string hexValues = "48 65 6C 6C 6F 20 57 6F 72 6C 64 21";
string[] hexValuesSplit = hexValues.Split(' ');
foreach (String hex in hexValuesSplit)
{
// Convert the number expressed in base-16 to an integer.
int value = Convert.ToInt32(hex, 16);
// Get the character corresponding to the integral value.
string stringValue = Char.ConvertFromUtf32(value);
char charValue = (char)value;
Console.WriteLine("hexadecimal value = {0}, int value = {1}, char value = {2} or {3}",
hex, value, stringValue, charValue);
}

Output:
hexadecimal value = 48, int value = 72, char value = H or H
hexadecimal value = 65, int value = 101, char value = e or e
hexadecimal value = 6C, int value = 108, char value = l or l
hexadecimal value = 6C, int value = 108, char value = l or l
hexadecimal value = 6F, int value = 111, char value = o or o
hexadecimal value = 20, int value = 32, char value = or
hexadecimal value = 57, int value = 87, char value = W or W
hexadecimal value = 6F, int value = 111, char value = o or o
hexadecimal value = 72, int value = 114, char value = r or r
hexadecimal value = 6C, int value = 108, char value = l or l
hexadecimal value = 64, int value = 100, char value = d or d
hexadecimal value = 21, int value = 33, char value = ! or !

C# 代码：

string hexString = "8E2";
int num = Int32.Parse(hexString, System.Globalization.NumberStyles.HexNumber);
Console.WriteLine(num);

Output: 2274

C# 代码：

string hexString = "43480170";
uint num = uint.Parse(hexString, System.Globalization.NumberStyles.AllowHexSpecifier);
byte[] floatVals = BitConverter.GetBytes(num);
float f = BitConverter.ToSingle(floatVals, 0);
Console.WriteLine("float convert = {0}", f);

Output: 200.0056

C#代码：

byte[] vals = { 0x010xAA0xB10xDC0x100xDD };
string str = BitConverter.ToString(vals);
Console.WriteLine(str);
str = BitConverter.ToString(vals).Replace("-""");
Console.WriteLine(str);

Output:
01-AA-B1-DC-10-DD
01AAB1DC10DD

public string StrToHex(string mStr) //返回处理后的十六进制字符串
{
return BitConverter.ToString(
ASCIIEncoding.Default.GetBytes(mStr)).Replace("-"" ");

/* StrToHex */
public string HexToStr(string mHex) // 返回十六进制代表的字符串
{
mHex = mHex.Replace(" """);
if (mHex.Length <= 0return "";
byte[] vBytes = new byte[mHex.Length / 2];
for (int i = 0; i < mHex.Length; i += 2)
if (!byte.TryParse(mHex.Substring(i, 2), NumberStyles.HexNumber, nullout vBytes[i / 2]))
vBytes[i / 2] = 0;
return ASCIIEncoding.Default.GetString(vBytes);

/* HexToStr */

posted on 2011-11-14 14:02  钢钢  阅读(28259)  评论(8编辑  收藏  举报