我正在尝试在 PowerShell 中运行一些内联 C# 代码,目的是刷新 Windows 资源管理器。
这是代码(基于这个问题):
function Request-ExplorerRefresh {
$code = @"
using System;
namespace VSYSRefresh
{
public static class Util
{
public static void RefreshExplorer(){
Console.WriteLine("Refreshing Explorer");
Guid CLSID_ShellApplication = new Guid("13709620-C279-11CE-A49E-444553540000");
Type shellApplicationType = Type.GetTypeFromCLSID(CLSID_ShellApplication, true);
object shellApplication = Activator.CreateInstance(shellApplicationType);
object windows = shellApplicationType.InvokeMember("Windows", System.Reflection.BindingFlags.InvokeMethod, null, shellApplication, new object[] { });
Type windowsType = windows.GetType();
object count = windowsType.InvokeMember("Count", System.Reflection.BindingFlags.GetProperty, null, windows, null);
for (int i = 0; i < (int)count; i++)
{
object item = windowsType.InvokeMember("Item", System.Reflection.BindingFlags.InvokeMethod, null, windows, new object[] { i });
if(item != null){
Type itemType = item.GetType();
}
// only refresh windows explorer
string itemName = (string)itemType.InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, item, null);
if ((itemName == "Windows Explorer") || (itemName == "File Explorer")) {
itemType.InvokeMember("Refresh", System.Reflection.BindingFlags.InvokeMethod, null, item, null);
}
}
}
}
}
"@
Add-Type -TypeDefinition $code -Language CSharp
Invoke-Expression "[VSYSRefresh.Util]::RefreshExplorer()"
}
我收到以下错误:
(26,43): error CS0165: Use of unassigned local variable 'itemType'
(string)itemType.InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, item, null);
Cannot add type. Compilation errors occurred.
Unable to find type [VSYSRefresh.Util].
我什至无法让
Console.WriteLine()
去工作。我是否需要引用某些程序集才能使其正常工作?
我陷入了困境,任何帮助将不胜感激。
错误出现在您的 for 循环中:
if(item != null){
Type itemType = item.GetType();
}
// only refresh windows explorer
string itemName = (string)itemType.InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, item, null);
由于您在
Type itemType
语句中声明了 if
,因此下一行将无法运行,因为它脱离了上下文。将此块更改为:
if (item != null) {
Type itemType = item.GetType();
// only refresh windows explorer
string itemName = (string)itemType.InvokeMember("Name", System.Reflection.BindingFlags.GetProperty, null, item, null);
if ((itemName == "Windows Explorer") || (itemName == "File Explorer")) {
itemType.InvokeMember("Refresh", System.Reflection.BindingFlags.InvokeMethod, null, item, null);
}
}
补充现有答案,解决您的当前代码的问题,这里是代码仅使用PowerShell的重写。借助
New-Object
命令,可以通过指定其 ProgID: 在 PowerShell 中创建 COM 对象
'Refreshing Explorer'
$shellApplication = New-Object -ComObject Shell.Application
$windows = $shellApplication.Windows()
$count = $windows.Count()
foreach( $i in 0..($count-1) ) {
$item = $windows.Item( $i )
if( $item.Name() -like '*Explorer*' ) {
$item.Refresh()
}
}
非常简单。唯一需要注意的是 COM 对象的属性像方法一样被调用。
此外,在我的系统上,资源管理器窗口仅命名为“Explorer”,因此我使条件更加通用。
PowerShell 一句:
@((New-Object -com shell.application).Windows()).ForEach{$_.Refresh()}