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用vb.net做计算器 vb做一个计算器

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

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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

用VB.NET做一个简单的计算器,当然是做的越高级越好,不要生成的EXE。连程序一起发过来。采纳追加500分!

计算机光要加减乘除的那种吗?

先在窗口添加一个textbox文本框名字是textbox1,再添加一个标签,属性text:(为一个空格)名字是label1,再加一个textbox文本框,名字是textbox2,加标签,名字是label2,属性text:“=”(引号不算),在后面加一个文本框,名字为textbox3.下一行添加五个按钮,名字分别是Button1(属性text:加),Button2(属性text:减).……最后一个是,清空,按钮

双击Button1,输入代码:dim a,b,c as single(回车!)a=textbox1.text(!)b=textbox2.text(!)a+b=c(!),textbox3=c(!)

后面分别点击不同的按钮,把“+”改成“-”,“*”“/”行了

双击最后按钮输入textbox1=""(!)textbox2=""(!)textbox3=""就ok了,累死我了呵呵(!)表示回车昂


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