vb.net函數(shù)計(jì)算器 vb三角函數(shù)計(jì)算器代碼
如何用VB.NET編寫計(jì)算器
簡(jiǎn)單的說拖出一些控件，設(shè)置相應(yīng)的caption和屬性等等，雙擊每個(gè)button控件，進(jìn)行相應(yīng)的處理，即可
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用VB.NET編的計(jì)算器程序！
Public Class SimpleCalculator
Inherits System.Windows.Forms.Form
#Region " Windows 窗體設(shè)計(jì)器生成的代碼 "
Public Sub New()
MyBase.New()
'該調(diào)用是 Windows 窗體設(shè)計(jì)器所必需的。
InitializeComponent()
'在 InitializeComponent() 調(diào)用之后添加任何初始化
End Sub
'窗體重寫處置以清理組件列表。
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 窗體設(shè)計(jì)器所必需的
Private components As System.ComponentModel.IContainer
'注意：以下過程是 Windows 窗體設(shè)計(jì)器所必需的
'可以使用 Windows 窗體設(shè)計(jì)器修改此過程。
'不要使用代碼編輯器修改它。
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 = "結(jié)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 = "計(jì)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 = "簡(jiǎn)單計(jì)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 '按鈕類型的變量
btn = sender '把產(chǎn)生該事件的按鈕對(duì)象賦值給btn
TextBox1.Text = TextBox1.Text + btn.Text '把該按鈕的Text屬性值連接到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屬性后連接一個(gè)空格、本按鈕的Text屬性值和一個(gè)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
'發(fā)生錯(cuò)誤轉(zhuǎn)移到標(biāo)號(hào)“ErrorPro”指定的行去執(zhí)行錯(cuò)誤處理程序
On Error GoTo ErrorPro
Dim r As Decimal '保存計(jì)算結(jié)果的變量
Dim t As String = TextBox1.Text '用于保存文本框中的算術(shù)表達(dá)式
Dim space As Integer = t.IndexOf(" ") '搜索空格位置,如果沒有空格，返回值為0
'字符串的取子符方法，第二個(gè)參數(shù)小于0，則將產(chǎn)生錯(cuò)誤號(hào)為5的異常，即過程參數(shù)不正確
Dim s1 As String = t.Substring(0, space) '通過取子串方法獲得第一個(gè)運(yùn)算數(shù)
Dim op As String = t.Substring(space + 1, 1) '通過取子串方法獲得運(yùn)算符
Dim s2 As String = t.Substring(space + 3) '通過取子串方法獲得第二個(gè)運(yùn)算數(shù)
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("輸入的運(yùn)算符有誤！")
Exit Sub
End Select
TextBox1.Text = CStr(r) '顯示結(jié)果
Exit Sub '退出過程
ErrorPro: '錯(cuò)誤處理程序塊
Select Case Err.Number
Case 6 '除數(shù)為零時(shí)，或運(yùn)算溢出時(shí)的錯(cuò)誤號(hào)
MsgBox("算術(shù)運(yùn)算溢出！", , "溢出提示")
TextBox1.Focus()
Exit Sub
Case 5 ' Substring過程的參數(shù)不符合要求的錯(cuò)誤號(hào)
MsgBox("必須輸入運(yùn)算符和第二個(gè)運(yùn)算數(shù)！", , "運(yùn)算數(shù)少")
Exit Sub
Case Else
'其它情況顯示錯(cuò)誤號(hào)和錯(cuò)誤原因
MsgBox("錯(cuò)誤號(hào)為" Err.Number Chr(10) Chr(13) "錯(cuò)誤原因：" Err.Description)
Exit Sub
End Select
End Sub
End Class
怎么個(gè)錯(cuò)法？VB.net 中設(shè)計(jì)科學(xué)計(jì)算器
你是不是復(fù)制別人的代碼~~~不然你怎么看不出來問題呢，改一下控件名，跟代碼的一樣
VB.NET怎么編模擬袖珍計(jì)算器的完整程序？
Public C護(hù)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("分母為0")
Else
TextBox4.Text = Val(TextBox1.Text) \ Val(TextBox2.Text)
End If
Case "/"
If Val(TextBox2.Text) = 0 Then
MsgBox("分母為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
vb:簡(jiǎn)易計(jì)算器（加減乘除）代碼
代碼如下：
Dim t, t1 As Integer
Dim x, y As Double
Public Sub com()
x = Val(l1.Caption)
Select Case t1
Case Is = 1: y = y + x
Case Is = 2: y = y - x
Case Is = 3: y = y * x
Case Is = 4: y = y / x
End Select
t1 = 0
t = 0
l1.Caption = "0"
End Sub
Private Sub Form_Load()
x = 0
y = 0
t = 0
t1 = 1
End Sub
Private Sub c0_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "0"
Else
l1.Caption = l1.Caption + "0"
End If
End Sub
Private Sub C1_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "1"
Else
l1.Caption = l1.Caption + "1"
End If
End Sub
Private Sub c10_Click(Index As Integer)
If t = 0 Then
l1.Caption = l1.Caption + "."
t = 1
End If
End Sub
Private Sub C2_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "2"
Else
l1.Caption = l1.Caption + "2"
End If
End Sub
Private Sub C3_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "3"
Else
l1.Caption = l1.Caption + "3"
End If
End Sub
Private Sub C4_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "4"
Else
l1.Caption = l1.Caption + "4"
End If
End Sub
Private Sub C5_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "5"
Else
l1.Caption = l1.Caption + "5"
End If
End Sub
Private Sub C6_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "6"
Else
l1.Caption = l1.Caption + "6"
End If
End Sub
Private Sub C7_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "7"
Else
l1.Caption = l1.Caption + "7"
End If
End Sub
Private Sub C8_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "8"
Else
l1.Caption = l1.Caption + "8"
End If
End Sub
Private Sub C9_Click(Index As Integer)
If l1.Caption = "0" Then
l1.Caption = "9"
Else
l1.Caption = l1.Caption + "9"
End If
End Sub
Private Sub z1_Click(Index As Integer)
com
t1 = 1
End Sub
Private Sub z2_Click(Index As Integer)
com
t1 = 2
End Sub
Private Sub z3_Click(Index As Integer)
com
t1 = 3
End Sub
Private Sub z4_Click(Index As Integer)
com
t1 = 4
End Sub
Private Sub z5_Click(Index As Integer)
tmp = Mid(l1.Caption, Len(l1.Caption), 1)
If tmp = "." Then
t = 0
End If
If Len(l1.Caption) = 1 Then
l1.Caption = "0"
Else
l1.Caption = Left(l1.Caption, Len(l1.Caption) - 1)
End If
End Sub
Private Sub z6_Click(Index As Integer)
l1.Caption = "0"
Form_Load
End Sub
Private Sub z7_Click(Index As Integer)
If (l1.Caption "0") Then
l1.Caption = "-" + l1.Caption
End If
End Sub
Private Sub z8_Click(Index As Integer)
com
l1.Caption = Str(y)
End Sub
擴(kuò)展資料
語(yǔ)言缺點(diǎn)
Visual Basic 語(yǔ)言具有不支持繼承、無原生支持多線程、異常處理不完善等三項(xiàng)明顯缺點(diǎn)，使其有所局限性（此些缺點(diǎn)皆已在 vb .net 獲得改進(jìn)）。
不支持繼承
VB 5.0 和 VB 6.0 都是基于對(duì)象的編程語(yǔ)言，但是不包含繼承特性。VB 中提供了特殊的類的功能，但是還是不能滿足程序員的需求。
無原生支持多線程
Visual Basic 對(duì)于多線程無原生支持，只能通過Windows API的調(diào)用實(shí)現(xiàn)，且極其的不穩(wěn)定。因?yàn)樵贏PI創(chuàng)建的線程中，并沒有自動(dòng)初始化運(yùn)行時(shí)庫(kù)，導(dǎo)致部分的函數(shù)無法使用。一般的，在VB6等早期的VB開發(fā)環(huán)境下，使用API創(chuàng)建線程的目的是完成容易使程序假死的大量數(shù)據(jù)或者邏輯的計(jì)算。
異常處理不完善
Visual Basic 中內(nèi)置異常處理，即使未寫異常處理代碼，一旦用戶出錯(cuò)也會(huì)彈出一個(gè)明確寫出出錯(cuò)原因?qū)υ捒颍又绦蚪K止。
Visual Basic 中可以使用 Err.Raise拋出異常。對(duì)系統(tǒng)及用戶拋出的異常的處理常用兩種模式：一是使用 On Error Resume Next 處理錯(cuò)誤；另一種是使用 On Error Goto 將運(yùn)行引入錯(cuò)誤處理代碼。但相對(duì) C++ 等語(yǔ)言而言，這樣的異常處理破壞了代碼的結(jié)構(gòu)。
參考資料：百度百科-VB
如何用vb.net編寫一個(gè)簡(jiǎn)單的計(jì)算器程序啊？多謝啊
你自己加窗體和空件吧
Private Sub a1_Click()
X = Val(Text1.Text)
Y = Val(Text2.Text)
s = X + Y
Text3.Text = s
Text3.Locked = True
End Sub
Private Sub a2_Click()
X = Val(Text1.Text)
Y = Val(Text2.Text)
s = X - Y
Text3.Text = s
Text3.Locked = True
End Sub
Private Sub a3_Click()
X = Val(Text1.Text)
Y = Val(Text2.Text)
s = X * Y
Text3.Text = s
Text3.Locked = True
End Sub
Private Sub a4_Click()
X = Val(Text1.Text)
Y = Val(Text2.Text)
s = X / Y
Text3.Text = s
Text3.Locked = True
End Sub
不會(huì)的叫我 在線談
當(dāng)前題目：vb.net函數(shù)計(jì)算器 vb三角函數(shù)計(jì)算器代碼
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