c# - DataGridView with ContextMenu assigned to column and a MessageBox -

i have dgv has datasource set bindinglist. there contextmenu assigned column in dgv. there menuitem set on contextmenu calls messagebox on click event.

everything works fine , methods called , messagebox yesno responses susppose to.

the problem having when messagebox's click event occurs (yes or no) it's job , goes away. if same routine called second time, again it's job no problem, reappears. if click yes or no goes away. if call third time messagebox appears again job , reappears twice. if everytime it's being called iterating , calling again amount of times. occur everytime it's called.

the bindinglist built using class nested properties , data elements present.

i tried using blank messagebox no dialogresults , no change. tried using dgv's raiselistchangedevents=false in contextmenu click event , dgv's cell enter click event.

i've stepped through code , and no matter class nested properties gets called , causes contextmenu's click event called again , again... figure design since bindinglist autoupdate when cell's value accessed or changed.

contextmenu's column button , readonly.

so how either catch messagebox after it's run first time or stop bindinglist auto updating. list draws data web reference , handle updates through methods provided api. reason i'm using bindinglist because dgv doesn't work list .

thank or guidance. (first time posting, have gathered , used lot of info here)

here's code:

_requestsview.autogeneratecolumns = false;             _edit.datapropertyname = "requestid";             _patient.datapropertyname = "patient";             _datesubmitted.datapropertyname = "date";             _completedby.datapropertyname = "completedby";             _completedon.datapropertyname = "completedon";             _procedure.datapropertyname = "procedure";             _stat.datapropertyname = "stat";             _viewreport.datapropertyname = "viewreport";             _selectedspecialist.datapropertyname = "selectedspecialist";             _status.datapropertyname = "status";             _rate.datapropertyname = "rating";              _requestsview.datasource = _requestsbinding; // _cancelrequest_click contextmenu menuitem  void _cancelrequest_click(object sender, eventargs e)     {          messagebox.show("test");     }  private void _requestsview_cellenter(object sender, datagridviewcelleventargs e)     {          if (_requestsview.currentrow != null)             if (_requestsview.currentrow.cells["_viewreport"].selected)                 try                 {                  var requestnumber = (int)_requestsview.currentrow.cells ["_viewreport"].value;                     var letter = api.client.getcompletedletter(usesession.sessionid,  requestnumber);                     var convertedletter = convert.frombase64string(letter);                     var requestnumbertostring = convert.tostring(requestnumber);                     var tmpfile = system.io.path.combine(system.io.path.gettemppath(), requestnumbertostring + @".pdf");                     var view = new viewletter(requestnumbertostring, tmpfile);                      file.writeallbytes(tmpfile, convertedletter);                      view._pdf.loadfile(tmpfile);                     view._pdf.performlayout();                     view._pdf.refresh();                     view._pdf.setshowtoolbar(true);                     view._pdf.setzoom(100);                     view.show();                     view.activate();                 }                 catch (exception ee)                 {                     messagebox.show(ee.message);                 }          if (_requestsview.currentrow != null)             if (_requestsview.currentrow.cells["_edit"].selected)                 _edit.contextmenustrip.show(cursor.position.x, cursor.position.y);          if (_requestsview.currentrow != null)             if (_requestsview.currentrow.cells["_rate"].selected)                 _rate.contextmenustrip.show(cursor.position.x, cursor.position.y);      }  public class requests {     private int _requestid;     private datetime _date;     private string _patient;     private string _completedby;     private string _completedon;     private string _procedure;     private string _stat;     private int _viewreport;     private specialists _selectedspecialist;     private string _status;     private int _rating;      public requests()     { }      public requests(string stat)     {         _stat = stat;     }      public int requestid     {         { return _requestid; }         set { _requestid = value; }     }      public datetime date     {         { return _date; }         set { _date = value; }     }      public string patient     {         { return _patient; }         set { _patient = value; }     }      public string completedby     {         { return _completedby; }         set { _completedby = value; }     }      public string completedon     {         { return _completedon; }         set { _completedon = value; }     }      public string procedure     {         { return _procedure; }         set { _procedure = value; }     }      public string stat     {         { return _stat; }         set { _stat = value; }     }      public int viewreport     {         { return _viewreport; }         set { _viewreport = value; }     }      public specialists selectedspecialist     {         { return _selectedspecialist; }         set { _selectedspecialist = value; }     }      public string status     {         { return _status; }         set { _status = value; }     }     public int rating     {         { return _rating; }         set { _rating = value; }     } } 

just wanted update , close it. figured out work around sets boolean true or false during different stages of events being called. if boolean set true return out of methods.