PowerShell的WPF - 基於價值

Question

我Woking的基於PowerShell來獲取來自多個服務器的磁盤信息，我需要背景色設置爲特定的細胞形式Percentfree列，RED當磁盤WPF工具細胞Datagrid的背景顏色如果可用空間在10-15％之間，則可用空間小於10％，橙色可用空間小於10％。通過對夫婦去爲博客/文章後，不知何故，我設法除了還在苦苦設置多個值或值範圍背景顏色的預期結果。

任何幫助，在此，將不勝感激。謝謝..！

<DataGrid Name="diskstatus" HorizontalAlignment="Left" Margin="24,65,0,10" Width="739" GridLinesVisibility="None" AlternatingRowBackground="Lightgray" AlternationCount="2"> 
     <DataGrid.Columns> 
      <DataGridTextColumn Header="Server Name" Binding="{Binding ServerName}" Width="130"/> 
      <DataGridTextColumn Header="Csize (GB)" Binding="{Binding Csize}" Width="100"/> 
      <DataGridTextColumn Header="Cfree (GB)" Binding="{Binding Cfree}" Width="100"/> 
      <DataGridTextColumn Header="CPercentfree" Binding="{Binding CPercentfree}" Width="100"> 
       <DataGridTextColumn.ElementStyle> 
       <Style TargetType="{x:Type TextBlock}"> 
        <Style.Triggers> 
         <Trigger Property="Text" Value="5"> 
         <Setter Property="Background" Value="Red"/> 
         </Trigger> 
        </Style.Triggers> 
        </Style> 
      </DataGridTextColumn.ElementStyle> 
      </DataGridTextColumn> 
      <DataGridTextColumn Header="Dsize (GB)" Binding="{Binding Dsize}" Width="100"/> 
      <DataGridTextColumn Header="Dfree (GB)" Binding="{Binding Dfree}" Width="100"/> 
      <DataGridTextColumn Header="DPercentfree" Binding="{Binding DPercentfree}" Width="100"/> 
     </DataGrid.Columns> 
    </DataGrid> 

PowerShell的函數來獲得盤信息：

Function Getdiskinfo() 
{ 
$dsk=@() 
$importcsv= Import-Csv -Path $TPAcsvfile 
$Getservers = $importcsv.servername 
foreach ($CompName in $Getservers) 
{ 

$cdrivespace= Get-WMIObject Win32_logicaldisk -ComputerName $CompName | ?{$_.DeviceID -eq 'C:'} | Select @{Name=‘cTotalSize’;Expression={[int]($_.Size/1gb)}},` 
@{Name=‘cFreeSpace’;Expression={[int]($_.FreeSpace/1gb)}}, @{Name=‘cPercentFree’;Expression={[math]::Round($_.FreeSpace/$_.Size,2)*100}} 


$ddrivespace= Get-WMIObject Win32_logicaldisk -ComputerName $CompName | ?{$_.DeviceID -eq 'D:'} | Select @{Name=‘dTotalSize’;Expression={[int]($_.Size/1gb)}},` 
@{Name=‘dFreeSpace’;Expression={[int]($_.FreeSpace/1gb)}}, @{Name=‘dPercentFree’;Expression={[math]::Round($_.FreeSpace/$_.Size,2)*100}} 


    $diskinfo = New-Object psobject 
    Add-Member -InputObject $diskinfo -membertype noteproperty -name "ServerName" -value $CompName 
    Add-Member -InputObject $diskinfo -membertype noteproperty -name "cSize" -value $cdrivespace.cTotalSize 
    Add-Member -InputObject $diskinfo -membertype noteproperty -name "cFree" -value $cdrivespace.cFreeSpace 
    Add-Member -InputObject $diskinfo -membertype noteproperty -name "cPercentfree" -value $cdrivespace.cPercentFree 
    Add-Member -InputObject $diskinfo -membertype noteproperty -name "DSize" -value $ddrivespace.dTotalSize 
    Add-Member -InputObject $diskinfo -membertype noteproperty -name "DFree" -value $ddrivespace.dFreeSpace 
    Add-Member -InputObject $diskinfo -membertype noteproperty -name "DPercentfree" -value $ddrivespace.dPercentFree 
    $diskstatus.addchild($diskinfo) 
    $dsk +=$diskinfo 

} Return, $dsk 
} 

Answer 1

我不知道的Powershell-WPF的侷限性，但基本上，你應該創建一個從CPercentfree翻譯成聚集範圍標識符的轉換器。

例如，讓我們使用轉換器與下面的轉換：

CPercentfree > 15: 
    Result = 0 
CPercentfree >= 10: 
    Result = 1 
Otherwise (lower than 10) 
    Result = 2 

在C＃轉換器將類似於下面，我希望你能爲自己翻譯一下：

public class WarningLevelConverter : IValueConverter 
{ 
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
    { 
     int v = value as Nullable<int> ?? System.Convert.ToInt32(value); 
     if (v > 15) 
     { 
      return 0; 
     } 
     if (v >= 10) 
     { 
      return 1; 
     } 
     return 2; 
    } 

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
    { 
     throw new NotImplementedException(); 
    } 
} 

然後，在資源的地方創建轉換器（假設local是項目命名空間的xmlns）

<local:WarningLevelConverter x:Key="cWarningLevel"/> 

並與一些數據使用觸發器：

<DataGridTextColumn Header="CPercentfree" Binding="{Binding CPercentfree}" Width="100"> 
    <DataGridTextColumn.ElementStyle> 
     <Style TargetType="{x:Type TextBlock}"> 
      <Style.Triggers> 
       <DataTrigger Binding="{Binding CPercentfree,Converter={StaticResource cWarningLevel}}" Value="1"> 
        <Setter Property="Background" Value="Orange"/> 
       </DataTrigger> 
       <DataTrigger Binding="{Binding CPercentfree,Converter={StaticResource cWarningLevel}}" Value="2"> 
        <Setter Property="Background" Value="Red"/> 
       </DataTrigger> 
      </Style.Triggers> 
     </Style> 
    </DataGridTextColumn.ElementStyle> 

注意我不是100％地肯定在DataContext上<DataTrigger Binding="{Binding CPercentfree,Converter={StaticResource cWarningLevel}}"一部分。您可能必須將其更改爲<DataTrigger Binding="{Binding Converter={StaticResource cWarningLevel}}"最終。