使用ManagementObjectSearcher无法获取Excel保存的文件路径

Question

我无法使用以下代码获得存储的完整Excel文件文件路径，如"D:\test.xlsx"，而以下代码对于其他文件类型（如docx，txt，ppt）可以正常工作。我想保存文件路径而不是可执行文件路径。

[DllImport("user32.dll")] 
public static extern IntPtr GetForegroundWindow(); 

[DllImport("user32.dll", SetLastError = true)] 
public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId); 

private void timer1_Tick(object sender, EventArgs e) 
{ 
    string psFilename = ActiveFileName(); 
    MessageBox.Show(psFilename); 
} 

private void Form1_Load(object sender, EventArgs e) 
{ 
    timer1.Enabled = true; 
    timer1.Interval = 20 * 1000; 
    timer1.Start(); 
} 

private static string ActiveFileName() 
{ 
    try 
    { 
     IntPtr hWnd = GetForegroundWindow(); 
     uint procId = 0; 
     GetWindowThreadProcessId(hWnd, out procId); 
     //var proc = System.Diagnostics.Process.GetProcessById((int)procId); 
     //if (proc != null) 
     //{ 
     // if (proc.Modules[0] != null) 
     // { 
     return (GetMainModuleFilepath((int)(procId))); 
     // } 
     //} 
    } 
    catch (Exception ex) 
    { 
     return ex.Message.ToString() + " first"; 
    } 
    return string.Empty; 

} 
public static string GetMainModuleFilepath(int processId) 
{ 
    try 
    { 
     string wmiQueryString = "SELECT * FROM Win32_Process WHERE ProcessId = " + processId; 
     using (var searcher = new ManagementObjectSearcher(wmiQueryString)) 
     { 
      using (var results = searcher.Get()) 
      { 
       ManagementObject mo = results.Cast<ManagementObject>().FirstOrDefault(); 
       if (mo != null) 
       { 
        return (string)mo["CommandLine"]; 
       } 
      } 
     } 
     System.Diagnostics.Process testProcess = System.Diagnostics.Process.GetProcessById(processId); 
     return null; 
    } 
    catch (Exception ex) 
    { 
     return ex.Message.ToString(); 
    } 
} 

有人可以让我知道在上面的代码中是否需要其他参数。

Answer 1

我能解决我没有得到excel保存文件路径的问题。我用handle.exe以下代码，我能够得到文件路径。

private static string GetExcelFileName(string pid) 
    { 
     string actualPath = string.Empty; 
     try 
     { 
      Process tool = new Process(); 
      tool.StartInfo.FileName = @"C:\PrinterPlusPlus\handle.exe"; 
      tool.StartInfo.Arguments = "/accepteula -p " + pid; 
      tool.StartInfo.UseShellExecute = false; 
      tool.StartInfo.RedirectStandardOutput = true; 
      tool.StartInfo.CreateNoWindow = true; 
      tool.Start(); 
      string outputTool = tool.StandardOutput.ReadToEnd(); 
      string[] stringSeparators = new string[] { "\r\n" }; 
      string[] lines = outputTool.Split(stringSeparators, StringSplitOptions.None); 
      foreach (string s in lines) 
      { 
       if (s.Contains(".xlsx") && !s.Contains("$")) 
       { 
        string[] arrPath = s.Split(new string[] { "File" }, StringSplitOptions.None); 
        string path = string.Empty; 
        if (arrPath.Length > 1) 
        { 
         actualPath = arrPath[1].Trim(); 
        } 
       } 
      } 
     } 
     catch 
     { 

     } 
     return actualPath; 
    }