mysql中的vb.net组合框值(vb.net combobox values in mysql)

mysql中的vb.net组合框值(vb.net combobox values in mysql)

最近我创建了一个pos，但我想使用组合框而不是单选按钮来选择税收选项，但我如何选择我想要的税并做数学：这是我的单选按钮代码，我想这样做但是与combobox

Dim SellPrice as Double Dim Tax as Double Dim FinalPrice if radiobutton1=checked=true than Final price *=Sellprice *0.18 else if radiobutton2=checked=true than Final price *=Sellprice *0.5 end if

我想做同样的事情，但使用组合框而不是radiobutton

Recently i created a pos but i want to use a combobox rather than a radio button to select a tax option but how can i choose the tax i want and do the mathematics: here is my code of radio button , i want to do it but with combobox

Dim SellPrice as Double Dim Tax as Double Dim FinalPrice if radiobutton1=checked=true than Final price *=Sellprice *0.18 else if radiobutton2=checked=true than Final price *=Sellprice *0.5 end if

i want to do the same but to use combobox rather than radiobutton

最满意答案

在您的表单加载：

Private Sub Form2_Load(sender As Object, e As EventArgs) Handles MyBase.Load ComboBox1.Items.Add("0.18") ComboBox1.Items.Add("0.5") 'Add other values if you wan End sub

在验证按钮中：

Private Sub BtnValidate_Click(sender As Object, e As EventArgs) Handles BtnValidate.Click Dim SellPrice As Double Dim Tax As Double Dim FinalPrice If ComboBox1.SelectedIndex > -1 Then Tax = Convert.ToDouble(ComboBox1.Text) FinalPrice *= SellPrice * Tax End If End Sub

In your form load :

Private Sub Form2_Load(sender As Object, e As EventArgs) Handles MyBase.Load ComboBox1.Items.Add("0.18") ComboBox1.Items.Add("0.5") 'Add other values if you wan End sub

in your validation button :

Private Sub BtnValidate_Click(sender As Object, e As EventArgs) Handles BtnValidate.Click Dim SellPrice As Double Dim Tax As Double Dim FinalPrice If ComboBox1.SelectedIndex > -1 Then Tax = Convert.ToDouble(ComboBox1.Text) FinalPrice *= SellPrice * Tax End If End Sub