获取Excel应用程序进程号

Question

我正在用c＃创建一个excel应用程序。 因为我会保持紧急的excel文件，我想保持它的处理程序打开。 我想保留excel进程ID，这样我就可以杀死它，以防系统崩溃。

创建时如何获得Excel Pid？

Answer 1

这里有一个如何打开使用Excel的互操作一个Excel文件，并妥善处理实例 （来源：谷歌）为例

Application ExcelObj = new Application(); 
    Workbook WB = ExcelObj.Workbooks.Open(fileName, 
     0, true, 5, "", "", true, XlPlatform.xlWindows, "\t", 
     false, false, 0, true, false, false); 
    Sheets sheets = WB.Worksheets; 
    Worksheet WS = (Worksheet)sheets.get_Item(1); 
    Range excelRange = WS.UsedRange; 

     ... (DO STUFF?) 

     // Get rid of everything - close Excel 
     while (Marshal.ReleaseComObject(WB) > 0) { } 
     WB = null; 
     while (Marshal.ReleaseComObject(sheets) > 0) { } 
     sheets = null; 
     while (Marshal.ReleaseComObject(WS) > 0) { } 
     WS = null; 
     while (Marshal.ReleaseComObject(excelRange) > 0) { } 
     excelRange = null; 
     GC(); 
     ExcelObj.Quit(); 
     while (Marshal.ReleaseComObject(ExcelObj) > 0) { } 
     ExcelObj = null; 
     GC(); 

    public static void GC() 
    { 
     System.GC.Collect(); 
     System.GC.WaitForPendingFinalizers(); 
     System.GC.Collect(); 
     System.GC.WaitForPendingFinalizers(); 
    } 

Answer 2

using Excel = Microsoft.Office.Interop.Excel; 
using System.Runtime.InteropServices; 
using System.Diagnostics; 

class Sample 
{ 
    [DllImport("user32.dll")] 
    static extern int GetWindowThreadProcessId(int hWnd, out int lpdwProcessId); 

    Process GetExcelProcess(Excel.Application excelApp) 
    { 
     int id; 
     GetWindowThreadProcessId(excelApp.Hwnd, out id); 
     return Process.GetProcessById(id); 
    } 
}