【发布时间】：2016-07-22 14:48:43
【问题描述】：
我是脚本新手（第一年），这是我第一次尝试从 VisualStudio 获取 WPF 应用程序并将其 XAML 代码转换为我可以与 Powershell 一起使用的东西。我正在尝试创建一个小型应用程序，它允许我在 TextBox 字段中输入 Active Directory 用户名并从 DatePicker 对象中选择一个日期，然后将这两条信息都转换为 Powershell 变量。从那里，我为 AD 用户启用 VPN 访问，然后将日期用作“截止日期”，此时我将禁用用户的访问。这两个变量也将输出到我们服务器上的一个 .csv 文件，该文件将由计划任务每天读取。如果截止日期与当天匹配，则会触发另一个脚本来禁用用户的 VPN 访问。 （那个预定的powershell脚本不在此列，后面会写。）
请查看我的代码并帮助我弄清楚为什么我无法从 TextBox 和 DatePicker 检索信息来填充我的 Powershell 变量！我的问题似乎在“实际上使对象工作”部分。我收到“WPFtextbox_Username.Text”和“DatePicker.SelectedDate.Value.Date.ToShortDateString”在 Powershell 中无效的错误，因此当我写入 .csv 文件时变量 $ADUser 和 $ExpirationDate 为空。此脚本菜鸟将不胜感激任何帮助！
感谢 https://foxdeploy.com/2015/04/16/part-ii-deploying-powershell-guis-in-minutes-using-visual-studio/ 提供此 XAML 到 Powershell 代码的框架。
$inputXML = @"
<Window x:Name="AllowVPNWindow" x:Class="AddADUserToVPN.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:AddADUserToVPN"
mc:Ignorable="d"
Title="Add VPN Access" Height="365.779" Width="577.356">
<Grid>
<Grid.Background>
<LinearGradientBrush EndPoint="0.5,1" MappingMode="RelativeToBoundingBox" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="1"/>
<GradientStop Color="#FF781515" Offset="0.077"/>
</LinearGradientBrush>
</Grid.Background>
<Label x:Name="label_username" Content="Username:" HorizontalAlignment="Left" Height="39" Margin="19,20,0,0" VerticalAlignment="Top" Width="95" Foreground="White" FontWeight="Bold" FontSize="16"/>
<Label x:Name="label_VPNCutoffDate" Content="VPN Access Cutoff Date:" HorizontalAlignment="Left" Height="63" Margin="19,80,0,0" VerticalAlignment="Top" Width="204" Foreground="White" FontWeight="Bold" FontSize="16" />
<TextBox x:Name="textBox_Username" HorizontalAlignment="Left" Height="22" Margin="25,52,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="125"/>
<Button x:Name="button_AddUser" Content="Add User" HorizontalAlignment="Left" Height="37" Margin="445,37,0,0" VerticalAlignment="Top" Width="80" FontSize="16">
<Button.Effect>
<DropShadowEffect/>
</Button.Effect>
</Button>
<TextBlock x:Name="textBlock_Instructions" HorizontalAlignment="Left" Height="84" Margin="299,215,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="244" Foreground="White" FontSize="16"><Run Text="Enter a "/><Run Foreground="#FF26D636" Text="valid"/><Run Text=" Active Directory username and select the date that the user's VPN access will "/><Run Foreground="#FF26D636" Text="end"/><Run Text=". "/></TextBlock>
<DatePicker x:Name="DatePicker" HorizontalAlignment="Left" Height="34" Margin="25,116,0,0" VerticalAlignment="Top" Width="125" FontSize="16"/>
</Grid>
</Window>
"@
$inputXML = $inputXML -replace 'mc:Ignorable="d"','' -replace "x:N",'N' -replace '^<Win.*', '<Window'
[void][System.Reflection.Assembly]::LoadWithPartialName('presentationframework')
[xml]$XAML = $inputXML
#Read XAML
$reader=(New-Object System.Xml.XmlNodeReader $xaml)
try{$Form=[Windows.Markup.XamlReader]::Load( $reader )}
catch{Write-Host "Unable to load Windows.Markup.XamlReader. Double-check syntax and ensure .net is installed."}
#===========================================================================
# Store Form Objects In PowerShell
#===========================================================================
$xaml.SelectNodes("//*[@Name]") | %{Set-Variable -Name "WPF$($_.Name)" -Value $Form.FindName($_.Name)}
Function Get-FormVariables{
if ($global:ReadmeDisplay -ne $true){Write-host "If you need to reference this display again, run Get-FormVariables" -ForegroundColor Yellow;$global:ReadmeDisplay=$true}
write-host "Found the following interactable elements from our form" -ForegroundColor Cyan
get-variable WPF*
}
Get-FormVariables
#===========================================================================
# Actually make the objects work
#===========================================================================
##### Grab information from the Text Box and from the DatePicker objects
function Get-FormFields {
$ADUser = if (WPFtextbox_Username.Text -ne $null){$ADUser = WPFtextbox_Username.Text}
else{$wshell = New-Object -ComObject Wscript.Shell
$wshell.Popup("Enter valid username.",0,"Try Again")
&Rest}
$ExpirationDate = (DatePicker.SelectedDate.Value.Date.ToShortDateString)
}
$WPFbutton_AddUser.Add_Click({
#Resolve Form Settings
Get-FormFields
##### Add VPN permission to the selected user
Set-ADUser $ADUser -Replace @{msnpallowdialin=$true}
##### Append ADUsername and Expiration Date to .csv file
"$ADUser, $ExpirationDate" | out-file -FilePath \\10.48.0.200\d$\adusertest.txt -append -width 200
$Form.Close()})
#===========================================================================
# Shows the form
#===========================================================================
write-host "To show the form, run the following" -ForegroundColor Cyan
function Show-Form{
$Form.ShowDialog() | out-null
}
Show-Form
【问题讨论】：
-
看起来您在调用 Get-FormFields 函数中获取所选日期时缺少一个美元符号 ($)。
$ExpirationDate = ($DatePicker.SelectedDate.Value.Date.ToShortDateString)。 WPFtextbox_Username.Text 的实例相同
标签： wpf xaml powershell datepicker textbox