Question

这是我在Visual Basic窗体表单应用程序中创建的程序，它使用两个列表框，一个用于Months，另一个用于Birthstones。当用户单击Birthstone时，lblDescription控件中会显示相应的月份，或者当用户单击_strMonths列表框中的Month时，lblDescription中会显示相应的Birthstone。该程序正在运行，但我不小心删除了它，现在我不再记得确切的代码了。我现在已经花了一个星期重新创建它，但无济于事。我已经研究过SelectedIndex属性，但到目前为止我所看到的一切都是关于SelectedIndex属性是一个整数，但我的是一个字符串。所以我来论坛寻求帮助。代码很简单。我添加了一个MsgBox（_intFill），它显示了所有的诞生石。我几乎在那里，但还没有雪茄。

<servlet>
    <servlet-name>DBbuildServletDispatcher</servlet-name>
    <servlet-class>com.foo.DBbuildServletDispatcher</servlet-class>
    <load-on-startup>0</load-on-startup>
</servlet> 
<servlet>
    <servlet-name>AppServletDispatcher</servlet-name>
    <servlet-class>com.foo.AppServletDispatcher</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

Answer 1

Option Strict On

Public Class frmBirthstones
    Private _strStones(11) As String
    Private _strMonths(11) As String

    Private Sub frmBirthstones_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
        'Array items for Brith Stones
        _strStones(0) = "Garnet"
        _strStones(1) = "Amethyst"
        _strStones(2) = "Aquamarine"
        _strStones(3) = "Diamond"
        _strStones(4) = "Emerald"
        _strStones(5) = "Pearl"
        _strStones(6) = "Ruby"
        _strStones(7) = "Peridot"
        _strStones(8) = "Sapphire"
        _strStones(9) = "Opal"
        _strStones(10) = "Topaz"
        _strStones(11) = "Turquoise"
        'Array items for Months
        _strMonths(0) = "January"
        _strMonths(1) = "February"
        _strMonths(2) = "March"
        _strMonths(3) = "April"
        _strMonths(4) = "May"
        _strMonths(5) = "June"
        _strMonths(6) = "July"
        _strMonths(7) = "August"
        _strMonths(8) = "September"
        _strMonths(9) = "October"
        _strMonths(10) = "November"
        _strMonths(11) = "December"



        'Makes label Description visible
        lblDescription.Visible = True


        'fills listbox with Birthstones
        lstStones.Items.AddRange(_strStones)


        'fills listbox with Months
        lstMonths.Items.AddRange(_strMonths)




    End Sub

    Private Sub lstStones_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles lstStones.SelectedIndexChanged
        lblDescription.Text = _strStones(lstStones.SelectedIndex).ToString() & " is the Birthstone for the month of " & _strMonths(lstStones.SelectedIndex).ToString()
    End Sub

    Private Sub lstMonths_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles lstMonths.SelectedIndexChanged
        lblDescription.Text = _strMonths(lstMonths.SelectedIndex).ToString() & " is the Month for the Birthstone " & _strStones(lstMonths.SelectedIndex).ToString()
    End Sub
End Class

也许这就是你想要做的。

system.string [] / type＆＃39; String＆＃39;无法转换为＆＃39; String（）＆＃39;在列表框vb.net中的选定索引中

1 个答案: