Text2.Text = Text2.Text + c
    Else: Text2.Text = "輸入錯誤"
          Exit For
    End If
Next
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If
'--------------十六進制->二進制---------------
If an2.Value Then
If Text1.Text <> "" Then
Text2.Text = ""
l = Len(Text1.Text)
For i = 1 To l
   a = Mid(Text1.Text, i, 1)
      If a <= "9" And a >= "0" Or a <= "f" And a >= "a" Or a <= "F" And a >= "A" Then
         Select Case a
            Case "0": Text2.Text = Text2.Text + "0000"
            Case "1": Text2.Text = Text2.Text + "0001"
            Case "2": Text2.Text = Text2.Text + "0010"
            Case "3": Text2.Text = Text2.Text + "0011"
            Case "4": Text2.Text = Text2.Text + "0100"
            Case "5": Text2.Text = Text2.Text + "0101"
            Case "6": Text2.Text = Text2.Text + "0110"
            Case "7": Text2.Text = Text2.Text + "0111"
            Case "8": Text2.Text = Text2.Text + "1000"
            Case "9": Text2.Text = Text2.Text + "1001"
            Case "a", "A": Text2.Text = Text2.Text + "1010"
            Case "b", "B": Text2.Text = Text2.Text + "1011"
            Case "c", "C": Text2.Text = Text2.Text + "1100"
            Case "d", "D": Text2.Text = Text2.Text + "1101"
            Case "e", "E": Text2.Text = Text2.Text + "1110"
            Case "f", "F": Text2.Text = Text2.Text + "1111"
            Case Else: Text2.Text = "輸入錯誤"
        End Select
      Else: Text2.Text = "輸入錯誤"
      End If
Next
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If

'--------------十進制->二進制-----------------
If an3.Value Then
If Text1.Text <> "" Then
   Text2.Text = ""
   a = Text1.Text
   l = Len(Text1.Text)
   If a <> 0 Then
   For i = 1 To l
     c = Mid(Text1.Text, i, 1)
     If c >= "0" And c <= "9" Then
       
         Do While a
           r = a Mod 2
           a = a \ 2
           Text2.Text = r & Text2.Text
         Loop
       
    Else: Text2.Text = "輸入錯誤"
          Exit Sub
    End If
   Next
   Else: Text2.Text = a
   End If
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If
End Sub

Private Sub x2_Click()
'-----------二進制－>十六進制----------------
Text2.Text = ""
If an1.Value Then
 If Text1.Text <> "" Then
   l = Len(Text1.Text)
   d = l Mod 4
   If d = 0 Then
     c = l / 4
     ReDim result(c)
     For i = 1 To c
        If Text2.Text <> "輸入錯誤" Then
          e = (c - 1) * 4
          tmp = Mid(Text1.Text, e + 1, 4)
          Call choice(tmp)
          c = c - 1
        Else: Exit For
        End If
     Next
   Else: c = Int(l / 4)
      ReDim result(c)
      g = c
      g = g + 1
      For i = 1 To g
        If Text2.Text <> "輸入錯誤" Then
          If c <> 0 Then
            e = (c - 1) * 4
            tmp = Mid(Text1.Text, e + 1 + d, 4)
            Call choice(tmp)
            c = c - 1
            g = g - 1
          ElseIf c = 0 Then
                 tmp = Mid(Text1.Text, 1, d)
                 Call choice(tmp)
                 c = c - 1
                 g = g - 1
          End If
        Else: Exit For
        End If
  Next

End If
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If
'--------------------------------------------
'----------------十六進制->十六進制----------
If an2.Value Then
Text2.Text = ""
If Text1.Text <> "" Then
l = Len(Text1.Text)
For i = 1 To l
    c = Mid(Text1.Text, i, 1)
    If c = "0" Or c = "1" Or c = "2" Or c = "3" Or c = "4" Or c = "5" Or c = "6" Or c = "7" Or c = "8" Or c = "9" Or c = "a" Or c = "b" Or c = "e" Or c = "d" Or c = "c" Or c = "f" Then
        Text2.Text = Text2.Text + c
    Else: Text2.Text = "輸入錯誤"
          Exit For
    End If
Next
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If
'--------------十進制->十六進制----------------
If an3.Value Then
If Text1.Text <> "" Then
   Text2.Text = ""
   a = Text1.Text
   l = Len(Text1.Text)
   If a <> 0 Then
   For i = 1 To l
     c = Mid(Text1.Text, i, 1)
     If c >= "0" And c <= "9" Then
       
         Do While a
           r = a Mod 16
           a = a \ 16
           Select Case r
              Case 0: r = "0"
              Case 1: r = "1"
              Case 2: r = "2"
              Case 3: r = "3"
              Case 4: r = "4"
              Case 5: r = "5"
              Case 6: r = "6"
              Case 7: r = "7"
              Case 8: r = "8"
              Case 9: r = "9"
              Case 10: r = "a"
              Case 11: r = "b"
              Case 12: r = "c"
              Case 13: r = "d"
              Case 14: r = "e"
              Case 15: r = "f"
      End Select
           Text2.Text = r + Text2.Text
         Loop
       
    Else: Text2.Text = "輸入錯誤"
          Exit Sub
    End If
   Next
   Else: Text2.Text = a
   End If
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If

End Sub

Private Sub x3_Click()
'-------------二進制－>十進制------------
If an1.Value Then
If Text1.Text <> "" Then
Text2.Text = "0"
l = Len(Text1.Text)
For i = 1 To l
    tmp1 = 1
    a = 0
    c = Mid(Text1.Text, i, 1)
    If c = "1" Or c = "0" Then
      If Int(c) <> 0 Then
        For j = 1 To l - i
          tmp1 = tmp1 * 2
        Next
      a = a + tmp1
      End If
    Else: Text2.Text = "輸入錯誤"
          Exit For
    End If
Text2.Text = Text2.Text + a
Next
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If
'------------------------
'------------十進制->十進制------------
If an3.Value Then
Text2.Text = ""
If Text1.Text <> "" Then
l = Len(Text1.Text)
For i = 1 To l
    c = Mid(Text1.Text, i, 1)
    If c = "1" Or c = "2" Or c = "3" Or c = "4" Or c = "5" Or c = "6" Or c = "7" Or c = "8" Or c = "9" Or c = "0" Then
        Text2.Text = Text2.Text + c
    Else: Text2.Text = "輸入錯誤"
          Exit For
    End If
Next
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If
'----------------十六進制->十進制---------------
If an2.Value Then
If Text1.Text <> "" Then
Text2.Text = "0"
l = Len(Text1.Text)
For i = 1 To l
    tmp1 = 1
    a = 0
    c = Mid(Text1.Text, i, 1)
    Select Case c
      Case "0": tmp1 = 0
      Case "1": tmp1 = 1
      Case "2": tmp1 = 2
      Case "3": tmp1 = 3
      Case "4": tmp1 = 4
      Case "5": tmp1 = 5
      Case "6": tmp1 = 6
      Case "7": tmp1 = 7
      Case "8": tmp1 = 8
      Case "9": tmp1 = 9
      Case "a", "A": tmp1 = 10
      Case "b", "B": tmp1 = 11
      Case "c", "C": tmp1 = 12
      Case "d", "D": tmp1 = 13
      Case "e", "E": tmp1 = 14
      Case "f", "F": tmp1 = 15
      End Select
    If c <= "9" And c >= "0" Or c <= "f" And c >= "a" Or c <= "F" And c >= "A" Then
      If c <> 0 Then
        For j = 1 To l - i
          tmp1 = tmp1 * 16
        Next
      a = a + tmp1
      End If
    Else: Text2.Text = "輸入錯誤"
          Exit For
    End If
Text2.Text = Text2.Text + a
Next
Else: Text2.Text = "您沒有輸入任何數(shù)字"
End If
End If
End Sub

Private Sub x4_Click()
End
End Sub