powershell将操作添加到组合框

目前，我想构建一个powershell gui。表单运行良好，因此没有问题。现在我想为我的选择添加一个事件，例如启动另一个脚本选择“item1”，另一个脚本选择“item2”，等等。我怎样才能做到这一点？谢谢你的帮助。 这就是我实际拥有的

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing") 
$objForm = New-Object System.Windows.Forms.Form 
$objForm.Text = "Combobox"
$objForm.Size = New-Object System.Drawing.Size(300,200) 
$objForm.StartPosition = "CenterScreen"

$objForm.KeyPreview = $True

$objForm.Add_KeyDown({if ($_.KeyCode -eq "Enter") 
 {
     foreach ($objItem in $objCombobox.SelectedItem)
         {$x += $objItem}
     $objForm.Close()
 }
})

$objForm.Add_KeyDown({if ($_.KeyCode -eq "Escape") 
 {$objForm.Close()}})

$OKButton = New-Object System.Windows.Forms.Button
$OKButton.Location = New-Object System.Drawing.Size(75,120)
$OKButton.Size = New-Object System.Drawing.Size(75,23)
$OKButton.Text = "OK"

$OKButton.Add_Click(
{
     foreach ($objItem in $objCombobox.SelectedItem)
         {$x += $objItem}
     $objForm.Close()
})

$objForm.Controls.Add($OKButton)

$CancelButton = New-Object System.Windows.Forms.Button
$CancelButton.Location = New-Object System.Drawing.Size(150,120)
$CancelButton.Size = New-Object System.Drawing.Size(75,23)
$CancelButton.Text = "Cancel"
$CancelButton.Add_Click({$objForm.Close()})
$objForm.Controls.Add($CancelButton)

$objLabel = New-Object System.Windows.Forms.Label
$objLabel.Location = New-Object System.Drawing.Size(10,20) 
$objLabel.Size = New-Object System.Drawing.Size(280,20) 
$objLabel.Text = "please choose"
$objForm.Controls.Add($objLabel) 

$objCombobox = New-Object System.Windows.Forms.Combobox 
$objCombobox.Location = New-Object System.Drawing.Size(10,40) 
$objCombobox.Size = New-Object System.Drawing.Size(260,20) 

[void] $objCombobox.Items.Add("Item 1")
[void] $objCombobox.Items.Add("Item 2")
[void] $objCombobox.Items.Add("Item 3")
[void] $objCombobox.Items.Add("Item 4")
[void] $objCombobox.Items.Add("Item 5")

$objCombobox.Height = 70
$objForm.Controls.Add($objCombobox) 
$objForm.Topmost = $True

$objForm.Add_Shown({$objForm.Activate()})
[void] $objForm.ShowDialog()

$x

---

继续我的评论，在修改后的脚本下面

$x =  # the return variable which is updated in the OK Click event
Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$objForm               = New-Object System.Windows.Forms.Form
$objForm.Text          = "Combobox"
$objForm.Size          = New-Object System.Drawing.Size(300,200)
$objForm.StartPosition = "CenterScreen"
$objForm.KeyPreview    = $True
$OKButton              = New-Object System.Windows.Forms.Button
$OKButton.Location     = New-Object System.Drawing.Size(75,120)
$OKButton.Size         = New-Object System.Drawing.Size(75,23)
$OKButton.Text         = "OK"
$OKButton.DialogResult = [System.Windows.Forms.DialogResult]::OK
$OKButton.Add_Click({
     $script:x = $objCombobox.SelectedItem  # there is only one SelectedItem
     $objForm.Close()
})

$objForm.Controls.Add($OKButton)

$CancelButton = New-Object System.Windows.Forms.Button
$CancelButton.Location = New-Object System.Drawing.Size(150,120)
$CancelButton.Size = New-Object System.Drawing.Size(75,23)
$CancelButton.Text = "Cancel"
$CancelButton.DialogResult = [System.Windows.Forms.DialogResult]::Cancel
$objForm.Controls.Add($CancelButton)

# using this, you do not need the Add_KeyDown events to react on clicking the OK or Cancel button
$objForm.AcceptButton = $OKButton
$objForm.CancelButton = $CancelButton

$objLabel = New-Object System.Windows.Forms.Label
$objLabel.Location = New-Object System.Drawing.Size(10,20) 
$objLabel.Size = New-Object System.Drawing.Size(280,20) 
$objLabel.Text = "please choose"
$objForm.Controls.Add($objLabel) 


$objCombobox = New-Object System.Windows.Forms.Combobox 
$objCombobox.Location = New-Object System.Drawing.Size(10,40) 
$objCombobox.Size = New-Object System.Drawing.Size(260,20) 
$objCombobox.Height = 70

[void] $objCombobox.Items.Add("Item 1")
[void] $objCombobox.Items.Add("Item 2")
[void] $objCombobox.Items.Add("Item 3")
[void] $objCombobox.Items.Add("Item 4")
[void] $objCombobox.Items.Add("Item 5")
$objCombobox.Add_SelectedIndexChanged({
    # for demo, just write to console
    Write-Host "You have selected '$($this.SelectedItem)'" -ForegroundColor Cyan
    # inside here, you can refer to the $objCombobox as $this
    switch ($this.SelectedItem) {
        "Item 1" { <# do something when Item 1 is selected #> }
        "Item 2" { <# do something when Item 2 is selected #> }
        "Item 3" { <# do something when Item 3 is selected #> }
        "Item 4" { <# do something when Item 4 is selected #> }
        "Item 5" { <# do something when Item 5 is selected #> }
    }
})

$objForm.Controls.Add($objCombobox) 
$objForm.Topmost = $True

$objForm.Add_Shown({$objForm.Activate()})
[void] $objForm.ShowDialog()

# IMPORTANT clean up the form when done
$objForm.Dispose()

$x

---

好的，显然现在您希望表单在做出选择并单击

Ok

按钮（从而执行所选操作）后保持不变

在这种情况下，您可以这样简化：

$x = @() # the return variable (an array with all selections made in order)
Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$objForm               = New-Object System.Windows.Forms.Form
$objForm.Text          = "Combobox"
$objForm.Size          = New-Object System.Drawing.Size(300,200)
$objForm.StartPosition = "CenterScreen"
$objForm.KeyPreview    = $True
$objForm.Topmost       = $True

$OKButton              = New-Object System.Windows.Forms.Button
$OKButton.Location     = New-Object System.Drawing.Size(75,120)
$OKButton.Size         = New-Object System.Drawing.Size(75,23)
$OKButton.Text         = "OK"
$OKButton.Add_Click({ 
    $selected = $objCombobox.SelectedItem
    $script:x += $objCombobox.SelectedItem
    if (![string]::IsNullOrWhiteSpace($selected)) {
        Write-Host "Performing action $($selected)" -ForegroundColor Yellow
        $objLabel.Text = "Performing action $($selected)"
        switch ($selected) {
            "Item 1" { <# do something when Item 1 is selected #> }
            "Item 2" { <# do something when Item 2 is selected #> }
            "Item 3" { <# do something when Item 3 is selected #> }
            "Item 4" { <# do something when Item 4 is selected #> }
            "Item 5" { <# do something when Item 5 is selected #> }
        }
        $objLabel.Text = "Please choose"
        $objCombobox.SelectedIndex = -1   # reset the combobox to blank
    }
})
$objForm.Controls.Add($OKButton)

$CancelButton              = New-Object System.Windows.Forms.Button
$CancelButton.Location     = New-Object System.Drawing.Size(150,120)
$CancelButton.Size         = New-Object System.Drawing.Size(75,23)
$CancelButton.Text         = "Cancel"
$CancelButton.DialogResult = [System.Windows.Forms.DialogResult]::Cancel
$objForm.Controls.Add($CancelButton)

# using this, you do not need the Add_KeyDown events to react on clicking the OK or Cancel button
$objForm.AcceptButton = $OKButton
$objForm.CancelButton = $CancelButton

$objLabel          = New-Object System.Windows.Forms.Label
$objLabel.Location = New-Object System.Drawing.Size(10,20)
$objLabel.Size     = New-Object System.Drawing.Size(280,20)
$objLabel.Text     = "please choose"
$objForm.Controls.Add($objLabel) 

$objCombobox          = New-Object System.Windows.Forms.Combobox
$objCombobox.Location = New-Object System.Drawing.Size(10,40)
$objCombobox.Size     = New-Object System.Drawing.Size(260,20)
$objCombobox.Height   = 70

[void] $objCombobox.Items.Add("Item 1")
[void] $objCombobox.Items.Add("Item 2")
[void] $objCombobox.Items.Add("Item 3")
[void] $objCombobox.Items.Add("Item 4")
[void] $objCombobox.Items.Add("Item 5")

$objForm.Controls.Add($objCombobox) 

$objForm.Add_Shown({$objForm.Activate()})
$dialogResult = $objForm.ShowDialog()

# IMPORTANT clean up the form when done
$objForm.Dispose()

if ($dialogResult -ne 'Cancel' -or $x.Count -eq 0) {
    # the form was cancelled or no selection was made
    # for demo, just write to console
    Write-Host "You have cancelled the dialog or did not select anything.."
}
else {
    Write-Host "The selection(s) you made were $($x -join ', ')" -ForegroundColor Cyan
}

$x=@（）#返回变量（按顺序进行所有选择的数组）
添加类型-AssemblyName System.Windows.Forms
添加类型-AssemblyName System.Drawing
$objForm=新对象System.Windows.Forms.Form
$objForm.Text=“组合框”
$objForm.Size=新对象系统.Drawing.Size（300200）
$objForm.StartPosition=“中心屏幕”
$objForm.KeyPreview=$True
$objForm.Topmost=$True
$OKButton=新建对象System.Windows.Forms.Button
$OKBUTON.Location=新对象系统.图纸.尺寸（75120）
$OKBUTON.Size=新对象系统.Drawing.Size（75,23）
$OKButton.Text=“确定”
$OK按钮。添加\单击（{
$selected=$objCombobox.SelectedItem
$script:x+=$objCombobox.SelectedItem
if（！[string]：：IsNullOrWhiteSpace（$selected））{
写入主机“正在执行操作$（$已选择）”-ForegroundColor黄色
$objLabel.Text=“正在执行操作$（$selected）”
交换机（$selected）{
“项目1”{}
“项目2”{}
“项目3”{}
“项目4”{}
“项目5”{}
}
$objLabel.Text=“请选择”
$objCombobox.SelectedIndex=-1#将组合框重置为空白
}
})
$objForm.Controls.Add（$OKButton）
$CancelButton=新建对象System.Windows.Forms.Button
$CancelButton.Location=新对象系统.图纸.尺寸（150120）
$CancelButton.Size=新对象系统.Drawing.Size（75,23）
$CancelButton.Text=“取消”
$CancelButton.DialogResult=[System.Windows.Forms.DialogResult]：：取消
$objForm.Controls.Add（$CancelButton）
#使用此选项，您不需要Add_KeyDown事件在单击OK或Cancel按钮时做出反应
$objForm.AcceptButton=$OKButton
$objForm.CancelButton=$CancelButton
$objLabel=新对象System.Windows.Forms.Label
$objLabel.Location=新对象系统.图纸.尺寸（10,20）
$objLabel.Size=新对象系统.Drawing.Size（280,20）
$objLabel.Text=“请选择”
$objForm.Controls.Add（$objLabel）
$objCombobox=新对象System.Windows.Forms.Combobox
$objCombobox.Location=新对象系统.Drawing.Size（10,40）
$objCombobox.Size=新对象系统.Drawing.Size（260,20）
$OBJCOMBOX.Height=70
[void]$objCombobox.Items.Add（“项目1”）
[void]$objCombobox.Items.Add（“第2项”）
[void]$objCombobox.Items.Add（“第3项”）
[void]$objCombobox.Items.Add（“第4项”）
[void]$objCombobox.Items.Add（“第5项”）
$objForm.Controls.Add（$objCombobox）
$objForm.Add_显示（{$objForm.Activate（）}）
$dialogResult=$objForm.ShowDialog（）
#重要事项：完成后请清理表单
$objForm.Dispose（）
如果（$dialogResult-ne‘取消’-或$x.Count-eq 0）{
#表单已取消或未进行选择
#对于演示，只需写入控制台
写入主机“您已取消对话框或未选择任何内容…”
}
否则{
写主机“您所做的选择是$（$x-join'，）”-ForegroundColor青色
}

继续我的评论，在修改后的脚本下面

$x =  # the return variable which is updated in the OK Click event
Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$objForm               = New-Object System.Windows.Forms.Form
$objForm.Text          = "Combobox"
$objForm.Size          = New-Object System.Drawing.Size(300,200)
$objForm.StartPosition = "CenterScreen"
$objForm.KeyPreview    = $True
$OKButton              = New-Object System.Windows.Forms.Button
$OKButton.Location     = New-Object System.Drawing.Size(75,120)
$OKButton.Size         = New-Object System.Drawing.Size(75,23)
$OKButton.Text         = "OK"
$OKButton.DialogResult = [System.Windows.Forms.DialogResult]::OK
$OKButton.Add_Click({
     $script:x = $objCombobox.SelectedItem  # there is only one SelectedItem
     $objForm.Close()
})

$objForm.Controls.Add($OKButton)

$CancelButton = New-Object System.Windows.Forms.Button
$CancelButton.Location = New-Object System.Drawing.Size(150,120)
$CancelButton.Size = New-Object System.Drawing.Size(75,23)
$CancelButton.Text = "Cancel"
$CancelButton.DialogResult = [System.Windows.Forms.DialogResult]::Cancel
$objForm.Controls.Add($CancelButton)

# using this, you do not need the Add_KeyDown events to react on clicking the OK or Cancel button
$objForm.AcceptButton = $OKButton
$objForm.CancelButton = $CancelButton

$objLabel = New-Object System.Windows.Forms.Label
$objLabel.Location = New-Object System.Drawing.Size(10,20) 
$objLabel.Size = New-Object System.Drawing.Size(280,20) 
$objLabel.Text = "please choose"
$objForm.Controls.Add($objLabel) 


$objCombobox = New-Object System.Windows.Forms.Combobox 
$objCombobox.Location = New-Object System.Drawing.Size(10,40) 
$objCombobox.Size = New-Object System.Drawing.Size(260,20) 
$objCombobox.Height = 70

[void] $objCombobox.Items.Add("Item 1")
[void] $objCombobox.Items.Add("Item 2")
[void] $objCombobox.Items.Add("Item 3")
[void] $objCombobox.Items.Add("Item 4")
[void] $objCombobox.Items.Add("Item 5")
$objCombobox.Add_SelectedIndexChanged({
    # for demo, just write to console
    Write-Host "You have selected '$($this.SelectedItem)'" -ForegroundColor Cyan
    # inside here, you can refer to the $objCombobox as $this
    switch ($this.SelectedItem) {
        "Item 1" { <# do something when Item 1 is selected #> }
        "Item 2" { <# do something when Item 2 is selected #> }
        "Item 3" { <# do something when Item 3 is selected #> }
        "Item 4" { <# do something when Item 4 is selected #> }
        "Item 5" { <# do something when Item 5 is selected #> }
    }
})

$objForm.Controls.Add($objCombobox) 
$objForm.Topmost = $True

$objForm.Add_Shown({$objForm.Activate()})
[void] $objForm.ShowDialog()

# IMPORTANT clean up the form when done
$objForm.Dispose()

$x

---

好的，显然现在您希望表单在做出选择并单击

Ok

按钮（从而执行所选操作）后保持不变

在这种情况下，您可以这样简化：

$x = @() # the return variable (an array with all selections made in order)
Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$objForm               = New-Object System.Windows.Forms.Form
$objForm.Text          = "Combobox"
$objForm.Size          = New-Object System.Drawing.Size(300,200)
$objForm.StartPosition = "CenterScreen"
$objForm.KeyPreview    = $True
$objForm.Topmost       = $True

$OKButton              = New-Object System.Windows.Forms.Button
$OKButton.Location     = New-Object System.Drawing.Size(75,120)
$OKButton.Size         = New-Object System.Drawing.Size(75,23)
$OKButton.Text         = "OK"
$OKButton.Add_Click({ 
    $selected = $objCombobox.SelectedItem
    $script:x += $objCombobox.SelectedItem
    if (![string]::IsNullOrWhiteSpace($selected)) {
        Write-Host "Performing action $($selected)" -ForegroundColor Yellow
        $objLabel.Text = "Performing action $($selected)"
        switch ($selected) {
            "Item 1" { <# do something when Item 1 is selected #> }
            "Item 2" { <# do something when Item 2 is selected #> }
            "Item 3" { <# do something when Item 3 is selected #> }
            "Item 4" { <# do something when Item 4 is selected #> }
            "Item 5" { <# do something when Item 5 is selected #> }
        }
        $objLabel.Text = "Please choose"
        $objCombobox.SelectedIndex = -1   # reset the combobox to blank
    }
})
$objForm.Controls.Add($OKButton)

$CancelButton              = New-Object System.Windows.Forms.Button
$CancelButton.Location     = New-Object System.Drawing.Size(150,120)
$CancelButton.Size         = New-Object System.Drawing.Size(75,23)
$CancelButton.Text         = "Cancel"
$CancelButton.DialogResult = [System.Windows.Forms.DialogResult]::Cancel
$objForm.Controls.Add($CancelButton)

# using this, you do not need the Add_KeyDown events to react on clicking the OK or Cancel button
$objForm.AcceptButton = $OKButton
$objForm.CancelButton = $CancelButton

$objLabel          = New-Object System.Windows.Forms.Label
$objLabel.Location = New-Object System.Drawing.Size(10,20)
$objLabel.Size     = New-Object System.Drawing.Size(280,20)
$objLabel.Text     = "please choose"
$objForm.Controls.Add($objLabel) 

$objCombobox          = New-Object System.Windows.Forms.Combobox
$objCombobox.Location = New-Object System.Drawing.Size(10,40)
$objCombobox.Size     = New-Object System.Drawing.Size(260,20)
$objCombobox.Height   = 70

[void] $objCombobox.Items.Add("Item 1")
[void] $objCombobox.Items.Add("Item 2")
[void] $objCombobox.Items.Add("Item 3")
[void] $objCombobox.Items.Add("Item 4")
[void] $objCombobox.Items.Add("Item 5")

$objForm.Controls.Add($objCombobox) 

$objForm.Add_Shown({$objForm.Activate()})
$dialogResult = $objForm.ShowDialog()

# IMPORTANT clean up the form when done
$objForm.Dispose()

if ($dialogResult -ne 'Cancel' -or $x.Count -eq 0) {
    # the form was cancelled or no selection was made
    # for demo, just write to console
    Write-Host "You have cancelled the dialog or did not select anything.."
}
else {
    Write-Host "The selection(s) you made were $($x -join ', ')" -ForegroundColor Cyan
}

$x=@（）#返回变量（按顺序进行所有选择的数组）
添加类型-AssemblyName System.Windows.Forms
添加类型-AssemblyName System.Drawing
$objForm=新对象System.Windows.Forms.Form
$objForm.Text=“组合框”
$objForm.Size=新对象系统.Drawing.Size（300200）
$objForm.StartPosition=“中心屏幕”
$objForm.KeyPreview=$True
$objForm.Topmost=$True
$OKButton=新建对象System.Windows.Forms.Button
$OKBUTON.Location=新对象系统.图纸.尺寸（75120）
$OKBUTON.Size=新对象系统.Drawing.Size（75,23）
$OKButton.Text=“确定”
$OK按钮。添加\单击（{
$selected=$objCombobox.SelectedItem
$script:x+=$objCombobox.SelectedItem
if（！[string]：：IsNullOrWhiteSpace（$selected））{
写入主机“正在执行操作$（$已选择）”-ForegroundColor黄色
$objLabel.Text=“正在执行操作$（$selected）”
交换机（$selected）{
“项目1”{}
“项目2”{}
“项目3”{}
“项目4”{}
“项目5”{}
}
$objLabel.Text=“请选择”
$objCombobox.SelectedIndex=-1#将组合框重置为空白
}
})
$objForm.Controls.Add（$OKButton）
$CancelButton=新建对象System.Windows.Forms.Button
$CancelButton.Location=新对象系统.图纸.尺寸（150120）
$CancelButton.Size=新对象系统.Drawing.Size（75,23）
$CancelButton.Text=“取消”
$CancelButton.DialogResult=[System.Windows.Forms.DialogResult]：：取消
$objForm.Controls.Add（$CancelButton）
#使用此选项，您不需要Add_KeyDown事件在单击OK或Cancel按钮时做出反应
$objForm.AcceptButton=$OKButton
$objForm.CancelButton=$CancelButton
$objLabel=新对象System.Windows.Forms.Label
$objLabel.Location=新对象系统.图纸.尺寸（10,20）
$objLabel.Size=新对象系统.Drawing.Size（280,20）
$objLabel.Text=“请选择”
$objForm.Controls.Add（$objLabel）
$objCombobox=新对象System.Windows.Forms.Combobox
$objCombobox.Location=新对象系统.Drawin