怎么用VB.NET编写计算器

怎么用VB.NET编写计算器
好心人教下啊！！跪谢

答案：
Public Class Form1
    Private Sub tijiao_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tijiao.Click
        Dim a, b, c As String
        a = TextBox1.Text
        b = TextBox2.Text
        If aa(a, b) Then
        End If
        If Me.jia.Checked Then
            MessageBox.Show("结果等于" & Val(a) + Val(b), "提示")
        End If
        If Me.jian.Checked Then
            MessageBox.Show("结果等于" & Val(a) - Val(b), "提示")
        End If
        If Me.cheng.Checked Then
            MessageBox.Show("结果等于" & Val(a) * Val(b), "提示")
        End If
        If Me.chu.Checked Then
            MessageBox.Show("结果等于" & Val(a) / Val(b), "提示")
        End If
    End Sub
    Private Function aa(ByVal bb As String, ByVal cc As String) As Boolean
        If bb = "" Then
            MessageBox.Show("请输入", " 提示")
            aa = False
        ElseIf Not IsNumeric(cc) Then
            MessageBox.Show("请输入数字", "警告")
            aa = False
        Else
            aa = True
        End If
    End Function
End Class
什么样的，是很多按钮的嘛？
 

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