有关vb.net制作计算器的问题

判断吧，如果点击+按钮，则一个全局变量为1，-按钮，则全局变量为2.以此类推，然后if或case判断哪个数，如果为1，就两个数相加。

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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

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

如何用vb.net编写一个简单的计算器程序啊？多谢啊

你自己加窗体和空件吧

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

不会的叫我 在线谈

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