Vb.net - 将十六进制值的字符串转换为ASCII [英] Vb.net - converting string of hex values to ASCII

问题描述

早上好！我有一个项目，它基本上使用ReadProcessMemory从正在运行的进程中抓取我的角色名称，并将值返回为Hex。我将此Hex值字符串转换为Ascii字符时遇到问题...示例如下！



我退回的价值：

4d -79-4e-61-6d-65-31-00-00-00

（注意命名约定中的10个字符限制...即：00-00-00）



我真正想要的是：

MyName1

Good Morning! I have a project that basically grabs my character name from a running process using ReadProcessMemory and returns the values as Hex. I'm having trouble converting this string of Hex values to Ascii characters... Example Below!

Value I am returned:
4d-79-4e-61-6d-65-31-00-00-00
(note 10 character limit in naming convention ... ie: 00-00-00)

What I am actually looking for:
MyName1

Dim Name As String = _memManager.ReadString(BaseAddr - &H1D0)

Public Function ReadString(ByVal addr As IntPtr) As String
    'Int32 data type-- is 32 bits long, 4 bytes.
    Dim _dataBytes(10) As Byte
    ReadProcessMemory(_targetProcessHandle, addr, _dataBytes, 10, vbNull)
    Return BitConverter.ToString(_dataBytes, 0)
End Function

我的尝试：



我在网上尝试了几个建议，比如hex2ascii和.tostring，但没有运气！

What I have tried:

I've tried several suggestions online such as hex2ascii and .tostring but no luck!

推荐答案

这取决于你得到的确切内容：如果它是字节4d， 79,4e，......然后它很简单：

It depends on exactly what you are getting: if it's the bytes 4d, 79, 4e, ... then it's fairly simple:

Dim s As String = System.Text.Encoding.UTF8.GetString(_dataBytes)

如果它是一个字符串：4d-79-4e-61-6d-65-31-00-00-00则它更复杂：首先将其转换为字节，然后将字节转换为字符串：

If it's a string: "4d-79-4e-61-6d-65-31-00-00-00" then it's more complex: first convert that to bytes, then convert the bytes to a string:

Public Shared Function GetBytes(value As String) As Byte()
	Return Array.ConvertAll(value.Split("-"C), Function(s) Byte.Parse(s, System.Globalization.NumberStyles.HexNumber))
End Function

我能够通过修改GetBytes函数来解决这个问题

I was able to resolve this issue by modifying the GetBytes function

Public Function ReadString(ByVal addr As IntPtr) As String
    'Int32 data type-- is 32 bits long, 4 bytes.
    Dim _dataBytes(10) As Byte
    ReadProcessMemory(_targetProcessHandle, addr, _dataBytes, 10, vbNull)
    Return System.Text.Encoding.Default.GetString(_dataBytes)
End Function

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