将代码粘贴到一个 VB 文件即可运行。我这里只是给出一种思路，按这种思路，可以做出一个强劲的计算器，也可以做出一个代码测试器或者是练习器。
Option Strict Off
Imports System.IO
Imports System.CodeDom.Compiler
Imports System.Reflection
Namespace LzmTW.Test
Public Class frmCal
Inherits System.Windows.Forms.Form
Private Code As New CodeBuilder
Private myMode As Mode
Region " Windows 窗体设计器生成的代码 "
Public Sub New ()
MyBase .New()
' 该调用是 Windows 窗体设计器所必需的。
InitializeComponent()
' 在 InitializeComponent() 调用之后添加任何初始化
End Sub
' 窗体重写 dispose 以清理组件列表。
Protected Overloads Overrides Sub Dispose( ByVal disposing As Boolean )
If disposing Then
If Not (components Is Nothing ) Then
components.Dispose()
End If
End If
MyBase .Dispose(disposing)
End Sub
'Windows 窗体设计器所必需的
Private components As System.ComponentModel.IContainer
' 注意 : 以下过程是 Windows 窗体设计器所必需的
' 可以使用 Windows 窗体设计器修改此过程。
' 不要使用代码编辑器修改它。
Friend WithEvents tbCode As System.Windows.Forms.TextBox
Friend WithEvents tbResult As System.Windows.Forms.TextBox
Friend WithEvents btnCal As System.Windows.Forms.Button
Friend WithEvents tbReturnPara As System.Windows.Forms.TextBox
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents tbSub As System.Windows.Forms.TextBox
Friend WithEvents Label3 As System.Windows.Forms.Label
Friend WithEvents Label4 As System.Windows.Forms.Label
Friend WithEvents Button1 As System.Windows.Forms.Button
Private Sub InitializeComponent()
Me .tbCode = New System.Windows.Forms.TextBox
Me .tbResult = New System.Windows.Forms.TextBox
Me .btnCal = New System.Windows.Forms.Button
Me .tbReturnPara = New System.Windows.Forms.TextBox
Me .Label1 = New System.Windows.Forms.Label
Me .Label2 = New System.Windows.Forms.Label
Me .tbSub = New System.Windows.Forms.TextBox
Me .Label3 = New System.Windows.Forms.Label
Me .Label4 = New System.Windows.Forms.Label
Me .Button1 = New System.Windows.Forms.Button
Me .SuspendLayout()
'
'tbCode
'
Me .tbCode.Anchor = CType ((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me .tbCode.Location = New System.Drawing.Point(8, 32)
Me .tbCode.Multiline = True
Me .tbCode.Name = "tbCode"
Me .tbCode.ScrollBars = System.Windows.Forms.ScrollBars.Both
Me .tbCode.Size = New System.Drawing.Size(584, 72)
Me .tbCode.TabIndex = 0
Me .tbCode.Text = "' 给定半径，求周长和面积 " & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "Dim M(3)" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "M(0)=20" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "M(1)=M(0)Math.PI2" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "M(2)=Math.PI*Math.Pow(M(0),2)" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "D" & _
"im Result" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "Result="" 半径 :"" + M(0).Tostring +vbcrlf+"" 周长 :"" + M(1).ToString+vbcrlf +"" 面 " & _
" 积 :"" +M(2).Tostring" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & " " & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & " " & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "' 打开 Excel" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "Dim oExcel As ExcelObj" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "oExcel" & _
".Open" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "oExcel.GetData(Result)"
'
'tbResult
'
Me .tbResult.Anchor = CType (((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me .tbResult.Location = New System.Drawing.Point(8, 360)
Me .tbResult.Multiline = True
Me .tbResult.Name = "tbResult"
Me .tbResult.ScrollBars = System.Windows.Forms.ScrollBars.Both
Me .tbResult.Size = New System.Drawing.Size(584, 64)
Me .tbResult.TabIndex = 1
Me .tbResult.Text = ""
'
'btnCal
'
Me .btnCal.Anchor = CType ((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me .btnCal.Location = New System.Drawing.Point(448, 320)
Me .btnCal.Name = "btnCal"
Me .btnCal.Size = New System.Drawing.Size(120, 32)
Me .btnCal.TabIndex = 2
Me .btnCal.Text = " 计算 (&C)"
'
'tbReturnPara
'
Me .tbReturnPara.Anchor = CType ((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me .tbReturnPara.Location = New System.Drawing.Point(104, 112)
Me .tbReturnPara.Name = "tbReturnPara"
Me .tbReturnPara.Size = New System.Drawing.Size(152, 21)
Me .tbReturnPara.TabIndex = 3
Me .tbReturnPara.Text = "Result"
'
'Label1
'
Me .Label1.Anchor = CType ((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left), System.Windows.Forms.AnchorStyles)
Me .Label1.Location = New System.Drawing.Point(8, 112)
Me .Label1.Name = "Label1"
Me .Label1.Size = New System.Drawing.Size(72, 16)
Me .Label1.TabIndex = 4
Me .Label1.Text = " 返回值参数 "
'
'Label2
'
Me .Label2.Location = New System.Drawing.Point(8, 8)
Me .Label2.Name = "Label2"
Me .Label2.Size = New System.Drawing.Size(128, 16)
Me .Label2.TabIndex = 5
Me .Label2.Text = " 主程序： "
'
'tbSub
'
Me .tbSub.Anchor = CType (((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me .tbSub.Location = New System.Drawing.Point(8, 176)
Me .tbSub.Multiline = True
Me .tbSub.Name = "tbSub"
Me .tbSub.ScrollBars = System.Windows.Forms.ScrollBars.Both
Me .tbSub.Size = New System.Drawing.Size(584, 136)
Me .tbSub.TabIndex = 6
Me .tbSub.Text = "Class ExcelObj" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & " Private shared obj,Wb,Ws" & Microsoft.VisualBasic.ChrW(13) & Microsoft.VisualBasic.ChrW(10) & "<SPAN style="mso-sp