如何将字节数组转换为十六进制字符串,反之亦然? [英] How do you convert a byte array to a hexadecimal string, and vice versa?
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问题描述
如何将字节数组转换为十六进制字符串,反之亦然?
解决方案
要么:
public static string ByteArrayToString(byte [] ba)
{
StringBuilder hex = new StringBuilder(ba.Length * 2 );
foreach(ba中的字节b)
hex.AppendFormat({0:x2},b);
return hex.ToString();
或者:
<$公共静态字符串ByteArrayToString(byte [] ba)
{
返回BitConverter.ToString(ba).Replace( - ,);
}
还有更多的变体,比如 here 。
反向转换将如下所示:
public static byte [] StringToByteArray(String十六进制)
{
int NumberChars = hex.Length;
byte [] bytes = new byte [NumberChars / 2];
for(int i = 0; i< NumberChars; i + = 2)
bytes [i / 2] = Convert.ToByte(hex.Substring(i,2),16);
返回字节;
使用 Substring
是与 Convert.ToByte
组合的最佳选择。有关更多信息,请参阅此答案。如果您需要更好的性能,您必须先避免 Convert.ToByte
,然后才能删除 SubString
。
How can you convert a byte array to a hexadecimal string, and vice versa?
解决方案
Either:
public static string ByteArrayToString(byte[] ba)
{
StringBuilder hex = new StringBuilder(ba.Length * 2);
foreach (byte b in ba)
hex.AppendFormat("{0:x2}", b);
return hex.ToString();
}
or:
public static string ByteArrayToString(byte[] ba)
{
return BitConverter.ToString(ba).Replace("-","");
}
There are even more variants of doing it, for example here.
The reverse conversion would go like this:
public static byte[] StringToByteArray(String hex)
{
int NumberChars = hex.Length;
byte[] bytes = new byte[NumberChars / 2];
for (int i = 0; i < NumberChars; i += 2)
bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);
return bytes;
}
Using Substring
is the best option in combination with Convert.ToByte
. See this answer for more information. If you need better performance, you must avoid Convert.ToByte
before you can drop SubString
.
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