ListView 排序不起作用 OnClick (PowerShell)

Question

我在 PowerShell 中构建的表单上有一个 ListView，但我无法对其进行排序。

如果我从命令行调用 $LV.Sort()（虽然没有显示表单），它工作得非常好。但是，如果我尝试在表单上的任何内容上的 OnClick 事件中调用它，它不会。我已经设置了标志，并且我知道那段代码正在运行，它只是没有做任何事情或标记任何错误。

显然$LV.Sorting = "Ascending" 已设置，否则它根本不会排序，我可以更改项目以便对 ListView 的引用很好。还尝试在出现线程问题时调用，但没有什么不同。

令人讨厌的是，由于很多人忘记设置 Sorting 属性，这是一个棘手的研究课题。

编辑：不确定是否相关，但使用 ShowDialog() 调用表单

Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()

$form = New-Object System.Windows.Forms.Form
$LVserverlist = New-Object System.Windows.Forms.ListView
$form.Controls.Add($LVserverlist)
    $LVserverlist.Dock = "Fill"
    $LVserverlist.View = "Details"
    $LVserverlist.Sorting = "Ascending"
    $LVserverlist.Add_ColumnClick({ $LVserverlist.sort(); $LVserverlist.Items[0].Text = "Working?" })
    $LVserverlist.Columns.Add("Name", 200, "Left") | Out-Null

0..10 | Foreach-Object {
    $LVItem = New-Object System.Windows.Forms.ListViewItem
    $LVItem.Text = (Get-Random -Maximum 1000).ToString()
    $LVserverlist.Items.Add($LVItem) | Out-Null
}

$form.ShowDialog()

Answer 1

从来没有找到让 Sort() 工作的解决方案，最终得到了这个解决方法（无论如何它更灵活一点）：

Param
(
    [System.Windows.Forms.ListView]$sender,
    $column
)
$temp = $sender.Items | Foreach-Object { $_ }

$sender.Items.Clear()
$sender.Items.AddRange(($temp | Sort-Object -Property @{ Expression={ $_.SubItems[$column].Text } }))

请注意，在 ListView 上，Sorting 属性需要设置为 None 否则项目将按字母顺序添加回来。

Answer 2

你可以试试自定义函数Sort-ListViewColumn

$MyListView.Add_ColumnClick({
    param($sender,$e)
    # Sort as Text String (not [int])
    Sort-ListViewColumn -ListView $this -ColumnIndex $e.column
})

完整功能代码：

function Sort-ListViewColumn
{
    <#
    .SYNOPSIS
        Sort the ListView's item using the specified column.
    .DESCRIPTION
        Sort the ListView's item using the specified column.
        This function uses Add-Type to define a class that sort the items.
        The ListView's Tag property is used to keep track of the sorting.
    .PARAMETER ListView
        The ListView control to sort.
    .PARAMETER ColumnIndex
        The index of the column to use for sorting.

    .PARAMETER  SortOrder
        The direction to sort the items. If not specified or set to None, it will toggle.

    .EXAMPLE
        Sort-ListViewColumn -ListView $listview1 -ColumnIndex 0

    .NOTES
        SAPIEN Technologies, Inc.
        http://www.sapien.com/

#>
    param (
        [ValidateNotNull()]
        [Parameter(Mandatory = $true)]
        [System.Windows.Forms.ListView]$ListView,
        [Parameter(Mandatory = $true)]
        [int]$ColumnIndex,
        [System.Windows.Forms.SortOrder]$SortOrder = 'None')

    if (($ListView.Items.Count -eq 0) -or ($ColumnIndex -lt 0) -or ($ColumnIndex -ge $ListView.Columns.Count))
    {
        return;
    }

    #region Define ListViewItemComparer
    try
    {
        $local:type = [ListViewItemComparer]
    }
    catch
    {
        Add-Type -ReferencedAssemblies ('System.Windows.Forms') -TypeDefinition  @" 
    using System;
    using System.Windows.Forms;
    using System.Collections;
    public class ListViewItemComparer : IComparer
    {
        public int column;
        public SortOrder sortOrder;
        public ListViewItemComparer()
        {
            column = 0;
            sortOrder = SortOrder.Ascending;
        }
        public ListViewItemComparer(int column, SortOrder sort)
        {
            this.column = column;
            sortOrder = sort;
        }
        public int Compare(object x, object y)
        {
            if(column >= ((ListViewItem)x).SubItems.Count)
                return  sortOrder == SortOrder.Ascending ? -1 : 1;

            if(column >= ((ListViewItem)y).SubItems.Count)
                return sortOrder == SortOrder.Ascending ? 1 : -1;

            if(sortOrder == SortOrder.Ascending)
                return String.Compare(((ListViewItem)x).SubItems[column].Text, ((ListViewItem)y).SubItems[column].Text);
            else
                return String.Compare(((ListViewItem)y).SubItems[column].Text, ((ListViewItem)x).SubItems[column].Text);
        }
    }
"@ | Out-Null
    }
    #endregion

    if ($ListView.Tag -is [ListViewItemComparer])
    {
        #Toggle the Sort Order
        if ($SortOrder -eq [System.Windows.Forms.SortOrder]::None)
        {
            if ($ListView.Tag.column -eq $ColumnIndex -and $ListView.Tag.sortOrder -eq 'Ascending')
            {
                $ListView.Tag.sortOrder = 'Descending'
            }
            else
            {
                $ListView.Tag.sortOrder = 'Ascending'
            }
        }
        else
        {
            $ListView.Tag.sortOrder = $SortOrder
        }

        $ListView.Tag.column = $ColumnIndex
        $ListView.Sort()#Sort the items
    }
    else
    {
        if ($Sort -eq [System.Windows.Forms.SortOrder]::None)
        {
            $Sort = [System.Windows.Forms.SortOrder]::Ascending
        }

        #Set to Tag because for some reason in PowerShell ListViewItemSorter prop returns null
        $ListView.Tag = New-Object ListViewItemComparer ($ColumnIndex, $SortOrder)
        $ListView.ListViewItemSorter = $ListView.Tag #Automatically sorts
    }
}

Answer 3

coller 事件

$MyListView.add_ColumnClick({SortListView $this $_.Column})

排序功能可以记住最新的订单：

function SortListView {
    Param(
        [System.Windows.Forms.ListView]$sender,
        $column
    )
    $temp = $sender.Items | Foreach-Object { $_ }
    $Script:SortingDescending = !$Script:SortingDescending
    $sender.Items.Clear()
    $sender.ShowGroups = $false
    $sender.Sorting = 'none'
    $sender.Items.AddRange(($temp | Sort-Object -Descending:$script:SortingDescending -Property @{ Expression={ $_.SubItems[$column].Text } }))
}