Public Declare Function GetPosInfo Lib "ComDll.dll" (ByVal psCardData As String, nTimeOut As Integer) As Integer这是个读卡器的读卡函数,用这个函数来读取出一串字符串例如读出字符串是"广东省解放路120号 51000010A95B120D"
"地址:广东省解放路120号 "
"区号:510000"
"检验码:10A95B120D"我是用下面那个函数来截取的
问题就是.有时截取出来的字符变成"区号:000001" ,"检验码:0A95B120D"
因为读卡器供应商说他那个读出来是ascii码.所以我怀疑是不是我的读取程序的编码问题
或者麻烦各位帮忙看下我的这个函数有没有问题?
或者是其它的问题Public Function getCardSubString(strCard As String, startPosition As Integer, strlength As Integer) As String
Dim byteAry() As Byte
Dim temAry() As Byte
Dim str As String
Dim I As Integer
Dim J As Integer
byteAry = Space$(256)
temAry = Space$(strlength / 2 + 1)
byteAry = StrConv(strCard, vbFromUnicode)
J = 0
For I = startPosition To startPosition + strlength - 1
temAry(J) = byteAry(I)
J = J + 1
Next I
"地址:广东省解放路120号 "
"区号:510000"
"检验码:10A95B120D"我是用下面那个函数来截取的
问题就是.有时截取出来的字符变成"区号:000001" ,"检验码:0A95B120D"
因为读卡器供应商说他那个读出来是ascii码.所以我怀疑是不是我的读取程序的编码问题
或者麻烦各位帮忙看下我的这个函数有没有问题?
或者是其它的问题Public Function getCardSubString(strCard As String, startPosition As Integer, strlength As Integer) As String
Dim byteAry() As Byte
Dim temAry() As Byte
Dim str As String
Dim I As Integer
Dim J As Integer
byteAry = Space$(256)
temAry = Space$(strlength / 2 + 1)
byteAry = StrConv(strCard, vbFromUnicode)
J = 0
For I = startPosition To startPosition + strlength - 1
temAry(J) = byteAry(I)
J = J + 1
Next I
是指同样的参数例如第一次getCardSubString(pscarddata,8,6)="510000"
getCardSubString(pscarddata,14,10)="10A95B120D"第二次就getCardSubString(pscarddata,8,6)="100000"
getCardSubString(pscarddata,14,10="0A95B120D"
反正你最后10位是校验码,校验码前面的6位是区号,区号前面是地址,为什么不直接用right(pscarddata,10)取校验码,left(right(pscarddata,16),6)取区号,left(pscarddata,len(pscarddata)-16)取得地址
startPosition As Integer, _
strlength As Integer _
) As String
Dim sSrc As String
Dim sSub As String
sSrc = StrConv(strCard, vbFromUnicode)
sSub = MidB$(sSrc, startPosition + 1, strlength)
getCardSubString = StrConv(sSub, vbUnicode)
End Function
Dim sSub As String
字符串声明能不能这样写--->dim sSrc,sSub As Stringhehe ..