vb汉字首字拼音获取

Public Function py(mystr As String) As String
  If Asc(mystr) < 0 Then
    If Asc(Left(mystr, 1)) < Asc("啊") Then
       py = "0"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("啊") And Asc(Left(mystr, 1)) < Asc("芭") Then
       py = "A"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("芭") And Asc(Left(mystr, 1)) < Asc("擦") Then
       py = "B"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("擦") And Asc(Left(mystr, 1)) < Asc("搭") Then
       py = "C"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("搭") And Asc(Left(mystr, 1)) < Asc("蛾") Then
       py = "D"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("蛾") And Asc(Left(mystr, 1)) < Asc("发") Then
       py = "E"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("发") And Asc(Left(mystr, 1)) < Asc("噶") Then
       py = "F"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("噶") And Asc(Left(mystr, 1)) < Asc("哈") Then
       py = "G"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("哈") And Asc(Left(mystr, 1)) < Asc("击") Then
       py = "H"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("击") And Asc(Left(mystr, 1)) < Asc("喀") Then
       py = "J"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("喀") And Asc(Left(mystr, 1)) < Asc("垃") Then
       py = "K"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("垃") And Asc(Left(mystr, 1)) < Asc("妈") Then
       py = "L"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("妈") And Asc(Left(mystr, 1)) < Asc("拿") Then
       py = "M"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("拿") And Asc(Left(mystr, 1)) < Asc("哦") Then
       py = "N"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("哦") And Asc(Left(mystr, 1)) < Asc("啪") Then
       py = "O"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("啪") And Asc(Left(mystr, 1)) < Asc("期") Then
       py = "P"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("期") And Asc(Left(mystr, 1)) < Asc("然") Then
       py = "Q"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("然") And Asc(Left(mystr, 1)) < Asc("撒") Then
       py = "R"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("撒") And Asc(Left(mystr, 1)) < Asc("塌") Then
       py = "S"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("塌") And Asc(Left(mystr, 1)) < Asc("挖") Then
       py = "T"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("挖") And Asc(Left(mystr, 1)) < Asc("昔") Then
       py = "W"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("昔") And Asc(Left(mystr, 1)) < Asc("压") Then
       py = "X"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("压") And Asc(Left(mystr, 1)) < Asc("匝") Then
       py = "Y"
       Exit Function
    End If
    If Asc(Left(mystr, 1)) >= Asc("匝") Then
       py = "Z"
       Exit Function
    End If
  Else
    If UCase(mystr) <= "Z" And UCase(mystr) >= "A" Then
       py = UCase(Left(mystr, 1))
      Else
       py = mystr
    End If
  End If
End Function