¿Cómo convertir una cadena simple a Byte Array en VBA?

Question

Necesito convertir una cadena simple en una matriz de bytes usando excel VBA. Entonces esta matriz de bytes se usa como el cuerpo de la solicitud.

¿Cómo puedo hacer eso?

Gracias.

Answer 1

Si solo necesita caracteres ANSI, puede usar la función StrConv() as is done here.

Answer 2

Mateo respondió cómo convertir a ANSI, pero si quería la matriz de bytes que resulta todavía representar la cadena Unicode original, que había simplemente asignar directamente:

Public Sub Main() 
    Dim b() As Byte 
    Dim s As String 
    s = "Whatever" 
    b = s 'Assign Unicode string to bytes.' 
    s = b 'Works in reverse, too!' 
    Debug.Print s 
End Sub 

Eso es todo lo que hay que hacer. Usted termina con una matriz de bytes de 16 elementos, cada par sucesivo que describe un carácter Unicode.

Answer 3

' a bit of an example 
' had some strings down column G 
' nothing in columns "F" or "H" so that current works 
' Think about it.. there are many many columns 
' so leave blank columns on each side of setsof dats 
' then currentregion works ... IFF no blank rows in the data 
' 
' problem to solve some text was Fred3 John2 Blue3 
' others were Bert 3 Green 2 ... which was the require format 
' the ASC char 1 ..255 are the odd or even 
' numbered bytes if array is 1 based or 0 based 
' 
Private Sub CommandButton1_Click() 
    Dim RV$, Ra As Range, Ri&, AL%, WSA() As Byte 
    Dim Ci%, WS$, LV As Byte 

    Set Ra = Range("g8").CurrentRegion 
    For Ri = 1 To Ra.Rows.Count 
     WSA = CStr(Ra(Ri, 1).value) 
     AL = UBound(WSA) 
     LV = WSA(AL - 1) ' last char byte value 
     If LV > 47 And LV < 58 Then ' 0 to 9 
      If WSA(AL - 3) <> 32 Then ' no space " " 
       ReDim Preserve WSA(AL + 2) ' allow 1 more char 
       WSA(AL - 3) = 32 ' put in space 
       WSA(AL - 1) = LV ' return char 
       WS = WSA ' back to a string 
       Ra(Ri, 1) = WS ' back to the cell 
      End If 
     End If 
    Next Ri 
End Sub 

' of course the normal VBAcommands Instr len Mid replace & 
' would do the job ... but my brain is lazy and needed some exercise