c# - How do i get Process.MainMoudle.FileName? -

i have class:

using system; using system.collections.generic; using system.linq; using system.text; using system.runtime.interopservices; using system.windows.forms; using system.componentmodel;  namespace hardwaremonitoring {       public class getprocesses: iwin32window      {         internal intptr handle;         internal string title;         internal string filename;          public intptr handle         {             { return handle; }         }          public string title         {             { return title; }         }          public string filename         {             { return filename; }         }          public static readonly int32 gwl_style = -16;         public static readonly uint64 ws_visible = 0x10000000l;         public static readonly uint64 ws_border = 0x00800000l;         public static readonly uint64 desired_ws = ws_border | ws_visible;          public delegate boolean enumwindowscallback(intptr hwnd, int32 lparam);          public static list<getprocesses> getallwindows()         {             list<getprocesses> windows = new list<getprocesses>();             stringbuilder buffer = new stringbuilder(100);             enumwindows(delegate(intptr hwnd, int32 lparam)             {                 if ((getwindowlonga(hwnd, gwl_style) & desired_ws) == desired_ws)                 {                     getwindowtext(hwnd, buffer, buffer.capacity);                     getprocesses wnd = new getprocesses();                     wnd.handle = hwnd;                     wnd.title = buffer.tostring();                     windows.add(wnd);                 }                 return true;             }, 0);              return windows;         }          [dllimport("user32.dll")]         static extern int32 enumwindows(enumwindowscallback lpenumfunc, int32 lparam);          [dllimport("user32.dll")]         public static extern void getwindowtext(intptr hwnd, stringbuilder lpstring, int32 nmaxcount);          [dllimport("user32.dll")]         static extern uint64 getwindowlonga(intptr hwnd, int32 nindex);     } } 

and in form1:

foreach (var wnd in getprocesses.getallwindows())             {              } 

with wnd can handle , titles of processes need filename.

if doing:

foreach (process p in process.getprocesses())  

then do:

p.mainmodule.filename 

how can filename property in class ? add there property how value ?

edit

in class bottom added:

[dllimport("user32.dll")] static extern uint getwindowthreadprocessid(intptr hwnd, intptr processid); 

then in class used it:

wnd.processid = getwindowthreadprocessid(wnd.handle, intptr.zero); 

and in form1:

    string ff = "";     void populateapplications()     {          foreach (var wnd in getprocesses.getallwindows())         {             uint uuu = wnd.processid;             ff = process.getprocessbyid((int)uuu).mainmodule.filename;         }     } 

but when it's doing line:

ff = process.getprocessbyid((int)uuu).mainmodule.filename; 

it nothing exit program. no errors or exceptions.

edit

in class bottom:

[dllimport("user32.dll")] public static extern int getwindowthreadprocessid(intptr hwnd, out int id); 

then using in form1:

    int ff = 0;     list<string> filenames = new list<string>();     void populateapplications()     {          foreach (var wnd in getprocesses.getallwindows())         {             getprocesses.getwindowthreadprocessid(wnd.handle, out ff);             filenames.add(process.getprocessbyid(ff).mainmodule.filename);         }     } 

i'm getting 18 processes filenames.