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vb.net中hex的简单介绍

VB.NET中怎么将16进制数换成对应的ASCII,比如说&H1000,怎么把他换成31H,30H,30H,30H

Public Function dec_to_hex(dec As Long) As String

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Dim a As String

dec_to_hex = ""

Do While dec 0

a = CStr(dec Mod 16)

Select Case a

Case "0": a = "30H"

Case "1": a = "31H"

Case "2": a = "32H"

Case "3": a = "33H"

Case "4": a = "34H"

Case "5": a = "35H"

Case "6": a = "36H"

Case "7": a = "37H"

Case "8": a = "38H"

Case "9": a = "30H"

Case "10": a = "65H"

Case "11": a = "66H"

Case "12": a = "67H"

Case "13": a = "68H"

Case "14": a = "69H"

Case "15": a = "70H"

End Select

dec_to_hex = a " " dec_to_hex

dec = dec \ 16

Loop

End Function

VB.NET,八/十六进制转十进制的函数,怎么转?

'此函数用于十进制到二进制

Private Function Bin(Number As Long) As Long

Dim Div_value As String

Do

Div_value = (Number Mod 2) Div_value

Number = Int(Number / 2)

Loop Until Number 2

Bin = Number Div_value

End Function

'此函数用于二进制到十进制

Private Function value_Bin(Number As Long) As Long

Dim Temp_value As Long, Cyc As Long

For Cyc = 0 To Len(Str(Number))

If Cyc = Len(Str(Number)) Then

value_Bin = Temp_value + Val(Mid(Str(Number), Cyc, 1))

Exit For

End If

If Cyc 0 Then Temp_value = (Temp_value + Val(Mid(Str(Number), Cyc, 1))) * 2

Next Cyc

End Function

'====写入以上函数后转值操作:

'十进制到十六进制:Hex(十进制数值)

'十进制到八进制:Oct(十进制数值)

'十进制到二进制:Bin(十进制数值)

'二进制到十进制:value_Bin(二进制数值)

'八进制到十进制:Val("O" 八进制数值)

'十六进制到十进制:Val("H" 十六进制数值)

比如

msgbox DEC_to_BIN(10)

就会返回一个10转换为十进制后的结果

或者简单点就用

VB自带函数:

十进制转八进制:Oct(num)

十六进制转八进制:oct("H" num)

十进制转十六进制:hex(num)

八进制转十六进制:hex("O" num)

十六进制转换为十进制

Dim str As String

str = Text2.Text

Text10.Text = CLng("H" str)

如何用vb.net向串口发送十六位进制数据

下面代码就是将文本框中以一个空格隔开的十六进制转为字节的代码,文本框中数字格式为:01 02 03

Dim TestArray() As String = Split(TextBox1.Text)

Dim hexBytes() As Byte

ReDim hexBytes(TestArray.Length - 1)

Dim i As Integer

For i = 0 To TestArray.Length - 1

hexBytes(i) = Val("h" TestArray(i))

Next

SerialPort.Write(hexBytes, 0, hexBytes.Length)

vb.net 把十进制数转成十六进制数的函数有哪些?

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

MsgBox(DEC_to_HEX(255))

End Sub

Public Function DEC_to_HEX(ByVal Dec As Long) As String

Dim a As String

DEC_to_HEX = ""

Do While Dec  0

a = CStr(Dec Mod 16)

Select Case a

Case "10" : a = "A"

Case "11" : a = "B"

Case "12" : a = "C"

Case "13" : a = "D"

Case "14" : a = "E"

Case "15" : a = "F"

End Select

DEC_to_HEX = a  DEC_to_HEX

Dec = Dec \ 16

Loop

End Function


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