字符串转换"1234ABC"；变成"F1F2F3F4C1C2C3"； [英] String conversion "1234ABC" into "F1F2F3F4C1C2C3"

问题描述

大家好，我是c#编程的新手，需要将字符串"1234ABCD"转换为"F1F2F3F4C1C2C3C4".请提出一些好的方法.

Thnx，
adir

Hi All, I am new in c# programming and need to convert a string "1234ABCD" into "F1F2F3F4C1C2C3C4".Could you please suggest some good way for this.

Thnx,
adir

推荐答案

类似此 [ ^ ].

用他们的方式，必须猜测这就是您想要的:您的问题应该确实是如何将ASCII字符串转换为十六进制?".您还应该学习使用Google.

Something like this[^].

By they way, had to guess that this is what you wanted: your question should really have been ''How do I convert an ASCII string to Hex?''. You should also learn to use Google.

首先，您使用了错误的代码类型.您要转换的是EBCDIC中的表示形式( http://en.wikipedia.org/wiki/EBCDIC [ ^ ])，而不是ASCII(http://en.wikipedia.org/wiki/ASCII [ ^ ])，Microsoft和其他大多数系统上都使用过.我提供的代码将只转换前8位，而不转换全部16位，但是如果您要这样做，可以将其固定为:

First of all, you have the wrong code type. What you are converting to is the representations in EBCDIC (http://en.wikipedia.org/wiki/EBCDIC[^]), not ASCII (http://en.wikipedia.org/wiki/ASCII[^]) which is used by Microsoft, and on most other systems. The code I am providing will only convert the first 8 bits, not the full 16 bits, but can be fixed to do that if that is what you want:

string testString = "1234ABCD";
var stringBuilder = new StringBuilder();
foreach (char chr in testString)
{
    var lft = ((int) chr & 240) / 16;
    stringBuilder.Append(ConvertNibbleToHex(lft));
    var rt = (int) chr & 15;
    stringBuilder.Append(ConvertNibbleToHex(rt));
}

它使用以下功能:

This uses the following function:

private static char ConvertNibbleToHex(int value)
{
    if (value < 10)
        return (char) (value + 48);
    return (char)(value + 55);
}

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