使用下拉列表和按钮触发安装应用程序等操作

Question

我之前问过这个问题，但没有结果，所以我再次询问。我确定并进行了搜索，同时还尝试使用自己的代码（反复试验）来在发布之前弄清楚它。我正在尝试创建某种信息亭或小程序，当从列表中选择一个项目然后单击按钮时，将允许执行操作。这可以是安装应用程序、启动控制台或运行脚本之类的任何内容。我有另一个使用与功能相关的按钮的按钮，但它变得挤满了一堆按钮，所以我认为列表会更干净。

Add-type -AssemblyName system.windows.forms
$formobject = [System.Windows.forms.form] 
$OfficeMenuForm=New-object $formobject
$OfficeMenuForm.clientsize= '750,500' #set the height and width
$OfficeMenuForm.text ='Office Installation Menu'
$OfficeMenuForm.backcolor='White'
$DefaultFont='Verdana,10'
$OfficeMenuForm.Font=$DefaultFont

#Build form
$labelobject = [System.Windows.Forms.Label]
$ComboBoxObject=[System.Windows.Forms.ComboBox]
$LabelTitle=New-Object $labelobject
$LabelTitle.Text='Make a selection from the dropdown menu then click the Install button'
$LabelTitle.AutoSize=$true
$LabelTitle.Location=New-Object System.Drawing.Point(10,10)
$BtnObject= [System.Windows.Forms.Button]
$BtnInstall=New-Object $BtnObject
$BtnInstall.Text='Install'
$BtnInstall.AutoSize=$true
$BtnInstall.font='Verdana,10'
$BtnInstall.Location=New-Object System.Drawing.Point(550,250)
$DDLOffice=New-Object $ComboBoxObject
$DDLOffice.Width='300'
$DDLOffice.Location=New-Object System.Drawing.Point(30,40)
#Add items to the dropdownlist
@('LTSC 2021 STD x64','LTSC 2021 STD+Project+Visio Std x64','LTSC 2021+Project 
STD')|ForEach-Object {[void]$DDLOffice.Items.Add($_)}
#Select default value
$DDLOffice.SelectedIndex=0

#lable to confirm selection
$LabelObject1=[System.Windows.Forms.Label]
$LabelOutPut=New-Object $LabelObject1
$LabelOutPut.Text="You selected: $Choice"
$LabelOutPut.AutoSize=$true
$LabelOutPut.location=new-object System.Drawing.Point (100,400)
#catch selection
$DDLOffice.add_SelectedIndexChanged({
$choice=$DDLOffice.SelectedItem
$LabelOutPut.Text="You selected: $Choice"
})
Function install{

if ($DDLOffice.SelectedIndex='2'){
start-process notepad.exe
}

}


$BtnInstall.Add_Click({Install})

#create an array to accept all the controls you want to appear on the form
$OfficeMenuForm.Controls.AddRange(@($LabelTitle,$BtnInstall,$DDLOffice,$LabelOutPut))
$OfficeMenuForm.showdialog() #displays the form
$OfficeMenuForm.dispose() #cleans up form

Answer 1

您的代码的问题是在您的

=

函数中使用 -eq

 （赋值）而不是 

install

 （相等比较运算符）

，所以简单地说：

function install {
    if ($DDLOffice.SelectedIndex -eq 2) {
        Start-Process notepad.exe
    }
}

可以解决您的问题，在这种情况下您也可以使用

switch

：

function install {
    switch ($DDLOffice.SelectedIndex) {
        0 { Write-Host "do thing for index 0" }
        1 { Write-Host "do thing for index 1" }
        2 { Start-Process notepad }
    }
}