Question

我有一个不太合适的ComboBox。它有3个静态选项，用于基本上对一长串连接配置文件进行排序以及“选择一个”连接配置文件。这是自动选择的。

无论我选择什么样的选择，在我点击其他选择之前都没有任何反应。现在这是有趣的部分。无论我接下来选择什么，列表框都会填充我之前的选择。

<ComboBox Name="CBox" Grid.Row="0" HorizontalAlignment="Left" VerticalAlignment="Top" >
    <ComboBoxItem Name="cbSelect" IsSelected="True">Select Profile</ComboBoxItem>
    <ComboBoxItem Name="cbRemote">Remote</ComboBoxItem>
    <ComboBoxItem Name="cbLab">Lab</ComboBoxItem>
    <ComboBoxItem Name="cbTomcats">Tomcats</ComboBoxItem>
</ComboBox>
<ListBox Name="ListBox" Grid.Row="1" HorizontalAlignment="Left" VerticalAlignment="Top" />


$syncHash.CBox.Add_SelectionChanged({
    If($syncHash.CBox.Text -eq "Select Profile")
    {
        $syncHash.ListBox.Items.Clear()
    }
    If($syncHash.CBox.Text -eq "Remote")
    {
        $syncHash.ListBox.Items.Clear()
        $profiles = New-Object System.Collections.ArrayList
        $profiles = (Get-ChildItem "C:\Profiles")
        foreach ($profile in $profiles)
        {
            if ($profile -match 'Remote \-')
            {
                [void]$syncHash.ListBox.Items.Add($profile.BaseName)
            }
        }
    }
    If($syncHash.CBox.Text -eq "Lab")
    {
        $syncHash.ListBox.Items.Clear()
        $profiles = New-Object System.Collections.ArrayList
        $profiles = (Get-ChildItem "C:\Profiles")
        foreach ($profile in $profiles)
        {
            if ($profile -match 'Lab \-')
            {
                [void]$syncHash.ListBox.Items.Add($profile.BaseName)
            }
        }
    }
    If($syncHash.CBox.SelectedItem -eq "Tomcats")
    {
        $syncHash.ListBox.Items.Clear()
        $profiles = New-Object System.Collections.ArrayList
        $profiles = (Get-ChildItem "C:\Profiles")
        foreach ($profile in $profiles)
        {
            if ($profile -match 'Tomcats \-')
            {
                [void]$syncHash.ListBox.Items.Add($profile.BaseName)
            }
        }
    }
})

最终解决方案使用Rohin Sidharth的回答：

Add-Type -Path 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\PresentationFramework\v4.0_4.0.0.0__31bf3856ad364e35\PresentationFramework.dll'
$Global:syncHash = [hashtable]::Synchronized(@{})

[xml]$xaml = @"
<Window 
        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"
        Title="ComboBox Test" Height="500" Width="350">
    <Grid Width="340" Height="470">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions >
            <RowDefinition Height="0.1*" />
            <RowDefinition Height="0.9*" />
        </Grid.RowDefinitions>            
        <ComboBox Name="CBox" Grid.Row="0" HorizontalAlignment="Left" VerticalAlignment="Top" >
            <ComboBoxItem Name="cbSelect" IsSelected="True">Select Profile</ComboBoxItem>
            <ComboBoxItem Name="cbRemote">Remote</ComboBoxItem>
            <ComboBoxItem Name="cbLab">Lab</ComboBoxItem>
            <ComboBoxItem Name="cbTomcats">Tomcats</ComboBoxItem>
        </ComboBox>
        <ListBox Name="ListBox" Grid.Row="1" HorizontalAlignment="Left" VerticalAlignment="Top" />
    </Grid>
</Window>
"@
    $reader=(New-Object System.Xml.XmlNodeReader $xaml)
    $syncHash.Window=[Windows.Markup.XamlReader]::Load( $reader )
    [xml]$XAML = $xaml
    $xaml.SelectNodes("//*[@*[contains(translate(name(.),'n','N'),'Name')]]") | %{
        $syncHash.Add($_.Name,$syncHash.Window.FindName($_.Name) )
    }
function Get-Profiles
{
    $profiles = (Get-ChildItem "C:\Profiles")

    $syncHash.ListBox.Items.Clear()

    If ($syncHash.CBox.SelectedIndex -eq 1)
    {
        foreach ($profile in $profiles)
        {
            if ($profile -match 'Remote \-')
            {
                $syncHash.ListBox.Items.Add($profile.BaseName)
            }
        }
    }
    ElseIf ($syncHash.CBox.SelectedIndex -eq 2)
    {
        foreach ($profile in $profiles)
        {
            if ($profile -match 'Lab \-')
            {
                $syncHash.ListBox.Items.Add($profile.BaseName)
            }
        }
    }
    ElseIf ($syncHash.CBox.SelectedIndex -eq 3)
    {
        foreach ($profile in $profiles)
        {
            if ($profile -match 'Tomcats \-')
            {
                $syncHash.ListBox.Items.Add($profile.BaseName)
            }
        }
    }
}

$syncHash.CBox.Add_SelectionChanged({Get-Profiles})

$null = $syncHash.Window.ShowDialog()
$syncHash.Error = $Error
$Error

Answer 1

我还没有在PowerShell中使用WPF，但在Winforms中，我想在组合框中选择一个项目，你必须设置SelectedIndex属性而不是项目的文本。索引为0将选择下拉列表中的第一项

Powershell WPF ComboBox更新ListBox

1 个答案: