vb.net计算器程序 vb计算器程序代码

怎样在VB .NET中调用记事本和计算器

这个啊，呵呵，应该不难吧

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先找到你要打开的应用程序的文件

然后用一个调用代码：

System.Diagnostics.Process.Start("C:\WINDOWS\system32\notepad.exe")

这是要开记事本的

System.Diagnostics.Process.Start("C:\WINDOWS\system32\calc.exe")

这是打开计算器的

应该也可以把这两个应用程序复制到你的程序的默认目录下，就是BIN下吧！

呵呵，试试！！要给我加分哦！！！

如何编辑计算器功能的应用程序？

Visual Studio2008发布后，有大量的VB.net爱好者抛弃原来的Visual Studio2005平台转向现在流行的Visual Studio2008平台。但是Visual Studio2008有一个缺点就是需要比较高的硬件配置才能正常平稳的运行，所以到现在为止还有一部分人处于观望中，并没有转向这个平台。然而Visual Studio2008的一些新的功能以及优化性比先前版本有了很大的进步。本篇文章将主要介绍怎样利用VB.net去编写一个计算器程序，程序虽然不复杂，但是其中所运用的知识和代码非常具有代表性，在平时开发中也是经常需要用到的。希望对VB.net2008的初学者带来帮助。

打开 Visual Studio 2008。在文件 (File) 菜单上，单击新建项目 (New Project)。 在新建项目 (New Project) 对话框的模板 (Templates) 窗格中，单击 Windows 应用程序(Windows Application)。单击确定 (OK)。

在Form1窗体中添加一个TextBox1控件和19个Button按钮，详细属性设置请查看以下的表格。

VB.net作业，用VB做一个简单的计算器.

我用VB做的你看能不能用

Public b

Public c

Public d

Public e

Public f

Private Sub Command14_Click()

d = ""

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Exit Sub

'c = Text1.Text

If b = "" Then Exit Sub

If e = "+" Then

d = f + b

Else

If e = "-" Then

d = f - b

Else

If e = "*" Then

d = f * b

Else

If e = "/" Then

If b = 0 Then

MsgBox "被除数不能为零！"

Exit Sub

End If

d = f / b

Else

MsgBox "错误操作！"

End If

End If

End If

End If

Text1.Text = d

b = ""

c = ""

e = ""

End Sub

Private Sub Command15_Click()

Text1.Text = ""

b = ""

c = ""

d = ""

e = ""

f = ""

End Sub

Private Sub Form_Load()

Text1.Text = ""

End Sub

Private Sub Command1_Click()

'判断开头有运算符就清零

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

'判断开头有0就禁止输入数字

If Text1.Text = "0" Then

Else

a = 1

'发现运算结果就清零

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text '得到当前操作数

End Sub

Private Sub Command2_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 2

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command3_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 3

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command4_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 4

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command5_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 5

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command6_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 6

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command7_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 7

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command8_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 8

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command9_Click()

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

If Text1.Text = "0" Then

Else

a = 9

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

End If

b = Text1.Text

End Sub

Private Sub Command10_Click()

If b = "" Then Exit Sub

a = "+"

e = "+"

f = b

Text1.Text = ""

Text1.Text = Text1.Text a

End Sub

Private Sub Command11_Click()

If b = "" Then Exit Sub

f = b

a = "-"

e = "-"

Text1.Text = ""

Text1.Text = Text1.Text a

End Sub

Private Sub Command12_Click()

If b = "" Then Exit Sub

a = "*"

e = "*"

f = b

Text1.Text = ""

Text1.Text = Text1.Text a

End Sub

Private Sub Command13_Click()

If b = "" Then Exit Sub

a = "/"

e = "/"

f = b '把操作数1提取出来

Text1.Text = ""

Text1.Text = Text1.Text a

End Sub

Private Sub Command16_Click()

'判断有运算符就清零

If Text1.Text = "+" Or Text1.Text = "-" Or Text1.Text = "*" Or Text1.Text = "/" Then Text1.Text = ""

'判断有零和空值就禁止输入0

'发现运算结果就清零

If d "" Then Text1.Text = "": d = ""

If Text1.Text = "0" Then

Else

a = 0

If d "" Then Text1.Text = "": d = ""

Text1.Text = Text1.Text a

b = Text1.Text

End If

End Sub

VB.NET怎么编模拟袖珍计算器的完整程序？

Public C护激篙刻蕻灸戈熏恭抹lass Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim c As Char

c = Trim(TextBox3.Text)

Select Case c

Case "+"

TextBox4.Text = Val(TextBox1.Text) + Val(TextBox2.Text)

Case "-"

TextBox4.Text = Val(TextBox1.Text) - Val(TextBox2.Text)

Case "*"

TextBox4.Text = Val(TextBox1.Text) * Val(TextBox2.Text)

Case "\"

If Val(TextBox2.Text) = 0 Then

MsgBox("分母为0")

Else

TextBox4.Text = Val(TextBox1.Text) \ Val(TextBox2.Text)

End If

Case "/"

If Val(TextBox2.Text) = 0 Then

MsgBox("分母为0")

Else

TextBox4.Text = Val(TextBox1.Text) / Val(TextBox2.Text)

End If

End Select

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

End

End Sub

End Class

如何用VB.NET编写计算器

简单的说拖出一些控件，设置相应的caption和属性等等，双击每个button控件，进行相应的处理，即可

用VB.NET编的计算器程序！

Public Class SimpleCalculator

Inherits System.Windows.Forms.Form

#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

'窗体重写处置以清理组件列表。

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 Label1 As System.Windows.Forms.Label

Friend WithEvents TextBox1 As System.Windows.Forms.TextBox

Friend WithEvents Button1 As System.Windows.Forms.Button

Friend WithEvents Button2 As System.Windows.Forms.Button

Friend WithEvents Button3 As System.Windows.Forms.Button

Friend WithEvents Button4 As System.Windows.Forms.Button

Friend WithEvents Button5 As System.Windows.Forms.Button

Friend WithEvents Button6 As System.Windows.Forms.Button

Friend WithEvents Button7 As System.Windows.Forms.Button

Friend WithEvents Button8 As System.Windows.Forms.Button

Friend WithEvents Button9 As System.Windows.Forms.Button

Friend WithEvents Button10 As System.Windows.Forms.Button

Friend WithEvents Button11 As System.Windows.Forms.Button

Friend WithEvents Button12 As System.Windows.Forms.Button

Friend WithEvents Button13 As System.Windows.Forms.Button

Friend WithEvents Button14 As System.Windows.Forms.Button

Friend WithEvents Button15 As System.Windows.Forms.Button

Friend WithEvents Button16 As System.Windows.Forms.Button

System.Diagnostics.DebuggerStepThrough() Private Sub InitializeComponent()

Me.Label1 = New System.Windows.Forms.Label

Me.TextBox1 = New System.Windows.Forms.TextBox

Me.Button1 = New System.Windows.Forms.Button

Me.Button2 = New System.Windows.Forms.Button

Me.Button3 = New System.Windows.Forms.Button

Me.Button4 = New System.Windows.Forms.Button

Me.Button5 = New System.Windows.Forms.Button

Me.Button6 = New System.Windows.Forms.Button

Me.Button7 = New System.Windows.Forms.Button

Me.Button8 = New System.Windows.Forms.Button

Me.Button9 = New System.Windows.Forms.Button

Me.Button10 = New System.Windows.Forms.Button

Me.Button11 = New System.Windows.Forms.Button

Me.Button12 = New System.Windows.Forms.Button

Me.Button13 = New System.Windows.Forms.Button

Me.Button14 = New System.Windows.Forms.Button

Me.Button15 = New System.Windows.Forms.Button

Me.Button16 = New System.Windows.Forms.Button

Me.SuspendLayout()

'

'Label1

'

Me.Label1.Location = New System.Drawing.Point(16, 16)

Me.Label1.Name = "Label1"

Me.Label1.Size = New System.Drawing.Size(48, 16)

Me.Label1.TabIndex = 0

Me.Label1.Text = "结果："

'

'TextBox1

'

Me.TextBox1.Location = New System.Drawing.Point(64, 8)

Me.TextBox1.Name = "TextBox1"

Me.TextBox1.Size = New System.Drawing.Size(120, 21)

Me.TextBox1.TabIndex = 1

Me.TextBox1.Text = ""

'

'Button1

'

Me.Button1.Location = New System.Drawing.Point(200, 8)

Me.Button1.Name = "Button1"

Me.Button1.Size = New System.Drawing.Size(56, 24)

Me.Button1.TabIndex = 2

Me.Button1.Text = "清空"

'

'Button2

'

Me.Button2.Location = New System.Drawing.Point(48, 56)

Me.Button2.Name = "Button2"

Me.Button2.Size = New System.Drawing.Size(24, 24)

Me.Button2.TabIndex = 3

Me.Button2.Text = "1"

'

'Button3

'

Me.Button3.Location = New System.Drawing.Point(88, 56)

Me.Button3.Name = "Button3"

Me.Button3.Size = New System.Drawing.Size(24, 24)

Me.Button3.TabIndex = 4

Me.Button3.Text = "2"

'

'Button4

'

Me.Button4.Location = New System.Drawing.Point(136, 56)

Me.Button4.Name = "Button4"

Me.Button4.Size = New System.Drawing.Size(24, 24)

Me.Button4.TabIndex = 5

Me.Button4.Text = "3"

'

'Button5

'

Me.Button5.Location = New System.Drawing.Point(48, 88)

Me.Button5.Name = "Button5"

Me.Button5.Size = New System.Drawing.Size(24, 24)

Me.Button5.TabIndex = 6

Me.Button5.Text = "4"

'

'Button6

'

Me.Button6.Location = New System.Drawing.Point(88, 88)

Me.Button6.Name = "Button6"

Me.Button6.Size = New System.Drawing.Size(24, 24)

Me.Button6.TabIndex = 7

Me.Button6.Text = "5"

'

'Button7

'

Me.Button7.Location = New System.Drawing.Point(136, 88)

Me.Button7.Name = "Button7"

Me.Button7.Size = New System.Drawing.Size(24, 24)

Me.Button7.TabIndex = 8

Me.Button7.Text = "6"

'

'Button8

'

Me.Button8.Location = New System.Drawing.Point(48, 120)

Me.Button8.Name = "Button8"

Me.Button8.Size = New System.Drawing.Size(24, 24)

Me.Button8.TabIndex = 9

Me.Button8.Text = "7"

'

'Button9

'

Me.Button9.Location = New System.Drawing.Point(88, 120)

Me.Button9.Name = "Button9"

Me.Button9.Size = New System.Drawing.Size(24, 24)

Me.Button9.TabIndex = 10

Me.Button9.Text = "8"

'

'Button10

'

Me.Button10.Location = New System.Drawing.Point(136, 120)

Me.Button10.Name = "Button10"

Me.Button10.Size = New System.Drawing.Size(24, 24)

Me.Button10.TabIndex = 11

Me.Button10.Text = "9"

'

'Button11

'

Me.Button11.Location = New System.Drawing.Point(48, 152)

Me.Button11.Name = "Button11"

Me.Button11.Size = New System.Drawing.Size(24, 24)

Me.Button11.TabIndex = 12

Me.Button11.Text = "0"

'

'Button12

'

Me.Button12.Location = New System.Drawing.Point(176, 56)

Me.Button12.Name = "Button12"

Me.Button12.Size = New System.Drawing.Size(24, 24)

Me.Button12.TabIndex = 13

Me.Button12.Text = "+"

'

'Button13

'

Me.Button13.Location = New System.Drawing.Point(176, 88)

Me.Button13.Name = "Button13"

Me.Button13.Size = New System.Drawing.Size(24, 24)

Me.Button13.TabIndex = 14

Me.Button13.Text = "-"

'

'Button14

'

Me.Button14.Location = New System.Drawing.Point(176, 120)

Me.Button14.Name = "Button14"

Me.Button14.Size = New System.Drawing.Size(24, 24)

Me.Button14.TabIndex = 15

Me.Button14.Text = "*"

'

'Button15

'

Me.Button15.Location = New System.Drawing.Point(176, 152)

Me.Button15.Name = "Button15"

Me.Button15.Size = New System.Drawing.Size(24, 24)

Me.Button15.TabIndex = 16

Me.Button15.Text = "/"

'

'Button16

'

Me.Button16.Location = New System.Drawing.Point(88, 152)

Me.Button16.Name = "Button16"

Me.Button16.Size = New System.Drawing.Size(72, 24)

Me.Button16.TabIndex = 17

Me.Button16.Text = "计算"

'

'SimpleCalculator

'

Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)

Me.ClientSize = New System.Drawing.Size(264, 190)

Me.Controls.Add(Me.Button16)

Me.Controls.Add(Me.Button15)

Me.Controls.Add(Me.Button14)

Me.Controls.Add(Me.Button13)

Me.Controls.Add(Me.Button12)

Me.Controls.Add(Me.Button11)

Me.Controls.Add(Me.Button10)

Me.Controls.Add(Me.Button9)

Me.Controls.Add(Me.Button8)

Me.Controls.Add(Me.Button7)

Me.Controls.Add(Me.Button6)

Me.Controls.Add(Me.Button5)

Me.Controls.Add(Me.Button4)

Me.Controls.Add(Me.Button3)

Me.Controls.Add(Me.Button2)

Me.Controls.Add(Me.Button1)

Me.Controls.Add(Me.TextBox1)

Me.Controls.Add(Me.Label1)

Me.Name = "SimpleCalculator"

Me.Text = "简单计算器"

Me.ResumeLayout(False)

End Sub

#End Region

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)

End Sub

Private Sub TextBox1_TabStopChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

Dim btn As Button '按钮类型的变量

btn = sender '把产生该事件的按钮对象赋值给btn

TextBox1.Text = TextBox1.Text + btn.Text '把该按钮的Text属性值连接到TextBox1中

End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click

Dim btn As Button

btn = sender

TextBox1.Text += btn.Text

End Sub

Private Sub Button12_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button12.Click

Dim btn As Button

btn = sender

'在文本框的Text属性后连接一个空格、本按钮的Text属性值和一个空格

TextBox1.Text = TextBox1.Text + " " + btn.Text + " "

End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

TextBox1.Text = "" '清空文本框

End Sub

Private Sub Button13_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button13.Click

Dim btn As Button

btn = sender

TextBox1.Text = TextBox1.Text + " " + btn.Text + " "

End Sub

Private Sub Button14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button14.Click

Dim btn As Button

btn = sender

TextBox1.Text = TextBox1.Text + " " + btn.Text + " "

End Sub

Private Sub Button15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button15.Click

Dim btn As Button

btn = sender

TextBox1.Text = TextBox1.Text + " " + btn.Text + " "

End Sub

Private Sub Button16_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button16.Click

'发生错误转移到标号“ErrorPro”指定的行去执行错误处理程序

On Error GoTo ErrorPro

Dim r As Decimal '保存计算结果的变量

Dim t As String = TextBox1.Text '用于保存文本框中的算术表达式

Dim space As Integer = t.IndexOf(" ") '搜索空格位置,如果没有空格，返回值为0

'字符串的取子符方法，第二个参数小于0，则将产生错误号为5的异常，即过程参数不正确

Dim s1 As String = t.Substring(0, space) '通过取子串方法获得第一个运算数

Dim op As String = t.Substring(space + 1, 1) '通过取子串方法获得运算符

Dim s2 As String = t.Substring(space + 3) '通过取子串方法获得第二个运算数

Dim arg1, arg2 As Integer

arg1 = Val(s1) : arg2 = Val(s2)

Select Case op

Case "+" : r = arg1 + arg2

Case "-" : r = arg1 - arg2

Case "*" : r = arg1 * arg2

Case "/" : r = arg1 / arg2

Case Else

MsgBox("输入的运算符有误！")

Exit Sub

End Select

TextBox1.Text = CStr(r) '显示结果

Exit Sub '退出过程

ErrorPro: '错误处理程序块

Select Case Err.Number

Case 6 '除数为零时，或运算溢出时的错误号

MsgBox("算术运算溢出！", , "溢出提示")

TextBox1.Focus()

Exit Sub

Case 5 ' Substring过程的参数不符合要求的错误号

MsgBox("必须输入运算符和第二个运算数！", , "运算数少")

Exit Sub

Case Else

'其它情况显示错误号和错误原因

MsgBox("错误号为" Err.Number Chr(10) Chr(13) "错误原因：" Err.Description)

Exit Sub

End Select

End Sub

End Class