Get PID from MS-Word ApplicationClass?
Consider this code:
using Microsoft.Office.Interop.Word;
ApplicationClass _application = new ApplicationClass();
Can I get the PID from the Winword.exe process that was launched by the _application?
I need the PID because with corrupted files, I just can't quit the ApplicationClass, even using this code:
_application.Quit(ref saveFile, ref missing, ref missing);
System.Runtime.InteropServices.Marshal.ReleaseComObject(_application);
GC.Collect();
GC.WaitForPendingFinalizers();
I can't search for the winword.exe process and kill it, because I will have several, and I don't know which one to kill. If I can get a PID for each ApplicationClass, I could just kill the correct winword.exe process that is giving me troubles to quit.
Solution 1:
Here is how to do it.
//Set the AppId
string AppId = ""+DateTime.Now.Ticks(); //A random title
//Create an identity for the app
this.oWordApp = new Microsoft.Office.Interop.Word.ApplicationClass();
this.oWordApp.Application.Caption = AppId;
this.oWordApp.Application.Visible = true;
while (GetProcessIdByWindowTitle(AppId) == Int32.MaxValue) //Loop till u get
{
Thread.Sleep(5);
}
///Get the pid by for word application
this.WordPid = GetProcessIdByWindowTitle(AppId);
///You canh hide the application afterward
this.oWordApp.Application.Visible = false;
/// <summary>
/// Returns the name of that process given by that title
/// </summary>
/// <param name="AppId">Int32MaxValue returned if it cant be found.</param>
/// <returns></returns>
public static int GetProcessIdByWindowTitle(string AppId)
{
Process[] P_CESSES = Process.GetProcesses();
for (int p_count = 0; p_count < P_CESSES.Length; p_count++)
{
if (P_CESSES[p_count].MainWindowTitle.Equals(AppId))
{
return P_CESSES[p_count].Id;
}
}
return Int32.MaxValue;
}
Solution 2:
There may be some error in the Word file. As a result, when you open the file with the method Word.ApplicationClass.Documents.Open()
, there will be a dialog shown and the process will hang.
Use Word.ApplicationClass.Documents.OpenNoRepairDialog()
instead. I found it fixed the problem.
Solution 3:
The usual way to get it is to change Word's title to something unique and hop through the top-level window list until you find it (EnumWindows).
Solution 4:
http://www.codekeep.net/snippets/7835116d-b254-466e-ae66-666e4fa3ea5e.aspx
///Return Type: DWORD->unsigned int
///hWnd: HWND->HWND__*
///lpdwProcessId: LPDWORD->DWORD*
[System.Runtime.InteropServices.DllImportAttribute( "user32.dll", EntryPoint = "GetWindowThreadProcessId" )]
public static extern int GetWindowThreadProcessId ( [System.Runtime.InteropServices.InAttribute()] System.IntPtr hWnd, out int lpdwProcessId );
private int _ExcelPID = 0;
Process _ExcelProcess;
private Application _ExcelApp = new ApplicationClass();
GetWindowThreadProcessId( new IntPtr(_ExcelApp.Hwnd), out _ExcelPID );
_ExcelProcess = System.Diagnostics.Process.GetProcessById( _ExcelPID );
...
_ExcelProcess.Kill();