# 用ASP實現全形和半形之間的轉化

<%
Function DBC2SBC(Str, flag)

rem 全形半形轉換函式

rem flag=-1時進行半形轉全形

rem flag=0時進行半形全形互轉

rem flag=1時進行全形轉半形

Dim i, sStr
If Len(Str)<= 0 Then Exit Function
DBC2SBC = ""
For i = 1 To Len(Str)
sStr = Asc(Mid(Str, i, 1))
Select Case flag
Case -1
If sStr>0 And sStr<= 125 Then
DBC2SBC = DBC2SBC & Chr(Asc(Mid(Str, i, 1)) -23680)
Else
DBC2SBC = DBC2SBC & Mid(Str, i, 1)
End If
Case 0
If sStr>0 And sStr<= 125 Then
DBC2SBC = DBC2SBC & Chr(Asc(Mid(Str, i, 1)) -23680)
Else
DBC2SBC = DBC2SBC & Chr(Asc(Mid(Str, i, 1)) + 23680)
End If
Case 1
If sStr<0 Or sStr>125 Then
DBC2SBC = DBC2SBC & Chr(Asc(Mid(Str, i, 1)) + 23680)
Else
DBC2SBC = DBC2SBC & Mid(Str, i, 1)
End If
End Select
Next
End Function
%>

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