c# - How do I stop a script loaded with CSScript? -

i run user defined scripts in wpf application using cs-script library. how can cancel script if runs endless? users write script can't rely on cancel flag checked inside script.

here simplified code snippet showing problem:

public partial class mainwindow : window {     public string messagefromscript     {         { return (string)getvalue(messagefromscriptproperty); }         set { setvalue(messagefromscriptproperty, value); }     }     public static readonly dependencyproperty messagefromscriptproperty =         dependencyproperty.register("messagefromscript", typeof(string), typeof(mainwindow), new propertymetadata(null));       public mainwindow()     {         initializecomponent();         datacontext = this;     }      backgroundworker worker = null;     private void onstart(object sender, routedeventargs e)     {         if(worker != null)         {             return;         }         worker = new backgroundworker();         worker.dowork += runscript;         worker.runworkercompleted += scriptcompleted;         worker.workersupportscancellation = true;         worker.runworkerasync();     }      private void scriptcompleted(object sender, runworkercompletedeventargs e)     {         if(e.cancelled)             messagefromscript = "script cancelled";         else             messagefromscript = e.result.tostring();     }      private void runscript(object sender, doworkeventargs e)     {         dynamic script = csscript.evaluator.loadcode(@"using system;                                 using system.threading;                                  public class script                                  {                                      public string test()                                      {                                         {int count=0; while(true) { count++; console.writeline(count.tostring()); thread.sleep(200); }}                                          return ""message script"";                                      }                                  }");          e.result = script.test();     }      private void onstop(object sender, routedeventargs e)     {         if(worker == null)         {             return;         }          //todo: how stop script here?          worker = null;     } } 

in test() method add parameter pass cancellationtoken script. design loops in script check canellation token if abort has been requested , break out. stop script call cancel() method of cancellationtokensource token passed script on invocation.