检查以下答案

从资源管理器窗口中获取文件夹路径 [ ^ ]

使用c＃获取每个资源管理器窗口的路径 [ ^ ]

check below answers
Get folder path from Explorer window[^]
Get the path of every explorer window with c#[^]

获取Internet Explorer的文件路径r您需要访问注册表项的应用程序：

To get the filepath to the Internet Explorer Application you need to access a Registry Key:

// required to access Registry
using Microsoft.Win32;

// required to use Process.Start
using System.Diagnostics;

// should work for Win 7/8
private string IEKey = @"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\IEXPLORE.EXE";

private void LaunchIE()
{
    string IEPath = Registry.GetValue(IEKey,"Path","").ToString().TrimEnd(';') + @"\iexplore.exe";
    
     Process.Start(IEPath);
}