c# - why do{ }while() loop doesn't work in body of a button_Click( ) method -

this code works correctly in console application, when use in windows forms application doesn't work correctly. never stops , produces no output.

i use in console aplication , works :

 static void main(string[] args)     {      console.writeline("enter boolean query");         do{             string query = console.readline();             list<int> lst = processquery(query);             count = 0;             if (lst!=null)             {                 foreach (int in lst)                 {                     if (a == 1)                     {                         console.writeline(documentcontentlist[count]);                     }                     count++;                 }             }             else             {                 console.writeline("no search result found");             }          }  while(1==1);      } 

i try use above code on button_click method in windows forms application, doesn't work. think wrong while(1==1) - there equivalent?

here method wrote button:

 private void button6_click(object sender, eventargs e)     {         if (t == null)         {             messagebox.show("click on loadfile button,please.");             return;         }         if (textbox4.text == "")         {             messagebox.show("enter boolean query");             return;         }         listbox1.items.clear();         datetime dt = datetime.now;         do{             list<int> lst = t.processquery(textbox4.text);             count = 0;             if (lst != null)             {                 foreach (int in lst)                 {                     listbox1.items.add(t.documentcontentlist[count]);                 }                 count++;             }             else             {                 listbox1.items.add("no search result found");             }             label1.text = "search = " + listbox1.items.count + " items, " + datetime.now.subtract(dt).totalseconds + " s";         } while (1==1);      } 

i believe removing while loop button_click event handler job you.

private void button6_click(object sender, eventargs e)     {         if (t == null)         {             messagebox.show("click on loadfile button,please.");             return;         }         if (textbox4.text == "")         {             messagebox.show("enter boolean query");             return;         }         listbox1.items.clear();         datetime dt = datetime.now;         //do{             list<int> lst = t.processquery(textbox4.text);             count = 0;             if (lst != null)             {                 foreach (int in lst)                 {                     listbox1.items.add(t.documentcontentlist[count]);                 }                 count++;             }             else             {                 listbox1.items.add("no search result found");             }             label1.text = "search = " + listbox1.items.count + " items, " + datetime.now.subtract(dt).totalseconds + " s";        // } while (1==1);      } 

the console application pauses execution when waits synchronously user input

string query = console.readline(); 

and when gets input necessary computation , prints whatever printed , waits @ same line again next input.

a winform application not work way, has event loop processes ui activity (keypressed etc.)

in short, not need loop in handler method.