【发布时间】：2018-08-17 18:25:51
【问题描述】：
我正在尝试通过 PowerShell 搜索 WPF DataGrid，依次选择并突出显示包含搜索关键字的每个单元格。目标是 1) 搜索 DataGrid，2) 选择并突出显示包含搜索关键字的单元格，同时将焦点/滚动到包含列/单元格的行，以及 3) 对可能包含的任何其他列/单元格重复相同的操作相同的关键字。
我整理了一个示例脚本（见下文）来演示我到目前为止所做的工作。在下面显示的示例脚本中，我能够搜索并找到包含关键字的行并滚动到该行。但是，我不知道如何突出显示该行中包含关键字的单元格。
下面显示的示例数据具有用于演示目的的预定义列。但是，从后端返回的实际数据是动态的，因此列数、列标题会有所不同，并且任何列都可能包含关键字。我们如何选择包含关键字的单元格？有没有更好的方法来实现这个总体目标？提前感谢您的帮助。
[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"
xmlns:local="clr-namespace:Test"
Title="MainWindow" Height="175" Width="550">
<Grid>
<TextBox x:Name="tb_Search" HorizontalAlignment="Left" Height="23" Margin="10,10,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="149"/>
<Button x:Name="bt_Search" Content="Search" HorizontalAlignment="Left" VerticalAlignment="Top" Width="100" IsDefault="True" Height="22" Margin="165,10,0,0" />
<DataGrid x:Name="dg" Margin="10,45,0,0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MinHeight="100" Height="Auto" Width="Auto" ColumnWidth="Auto" AlternationCount="1" IsReadOnly="True" SelectionMode="Extended" SelectionUnit="Cell" Background="White" />
</Grid>
</Window>
"@
$reader=(New-Object System.Xml.XmlNodeReader $xaml)
$Window=[Windows.Markup.XamlReader]::Load($reader)
#Turn XAML into PowerShell objects
$xaml.SelectNodes("//*[@*[contains(translate(name(.),'n','N'),'x:Name')]]") | ForEach-Object{
Set-Variable -Name ($_.Name) -Value $Window.FindName($_.Name)
}
#sample data
$DataSet = New-Object System.Data.DataSet
$Table = $DataSet.Tables.Add("Table")
$Properties = @("Country","Capital","Population")
$Properties | foreach {
$Column = New-Object System.Data.DataColumn($_)
$Table.Columns.Add($Column)
}
$Null=$Table.Rows.Add("China PR","Beijing","20,693,000")
$Null=$Table.Rows.Add("India","New Delhi","16,787,949")
$Null=$Table.Rows.Add("Japan","Tokyo","13,189,000")
$Null=$Table.Rows.Add("Philippines","Manila","12,877,253")
$Null=$Table.Rows.Add("Russia","Moscow","11,541,000")
$Null=$Table.Rows.Add("Egypt","Cairo","10,230,350")
$Null=$Table.Rows.Add("USA","Washington, D.C","658,893")
$Null=$Table.Rows.Add("China PR","Beijing","20,693,000")
$Null=$Table.Rows.Add("India","New Delhi","16,787,949")
$Null=$Table.Rows.Add("Japan","Tokyo","13,189,000")
$Null=$Table.Rows.Add("Philippines","Manila","12,877,253")
$Null=$Table.Rows.Add("Russia","Moscow","11,541,000")
$Null=$Table.Rows.Add("Egypt","Cairo","10,230,350")
$Null=$Table.Rows.Add("USA","Washington, D.C","658,893")
#populate datagrid
$DataView = New-Object System.Data.DataView($Table)
$array = New-Object System.Collections.ArrayList
[void] $array.AddRange($DataView)
$dg.clear()
$dg.ItemsSource = $array
$dg.IsReadOnly = $true
$bt_Search.Add_Click({
$SearchValue = $tb_Search.text
for ($i = 0; $i -lt $dg.Items.Count; $i++)
{
if ($dg.Items[$i].Row[$dg.Columns.DisplayIndex] -eq "$SearchValue")
{
[System.Windows.Forms.MessageBox]::Show("Keyword Found")
$dg.ScrollIntoView($dg.Items[$i]) #scroll to the row that contains the keyword searched
}
}
})
#Display Form
$Window.ShowDialog() | Out-Null
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标签： wpf powershell datagrid