.net - Handle Thread in c# for print -

i want printing dot net project background work thread, did is, first collect each output string collection of string this:

 myoutputstringcollection.add(str); 

then after collecting lines want send printer, write code executes thread:

public static void printalllines() {     thread t = new thread(sendtoprinter);                 t.start(); //starts thread } 

and send printer function this:

 public static void sendtoprinter()  {      int count = myoutputstringcollection.count;      string[] myarray = new string[count];      myoutputstringcollection.copyto(myarray, 0);      (int = 0; < count; i++)      {          sendstringtoprinter(myarray[i].tostring());      }       array.clear(myarray, 0, myarray.length);  } 

the problem here facing is, if click print button more 1 times printing alignment not correct, think if handle thread execution right.

to prevent problem occurring, i'd disable print button before start thread , re-enable after strings have been sent printer:

public static void printalllines() {     btnprint.enabled = false;           thread t = new thread(sendtoprinter);                 t.start();//starts thread }  public static void sendtoprinter() {     int count = myoutputstringcollection.count;     string[] myarray = new string[count];     myoutputstringcollection.copyto(myarray, 0);     (int = 0; < count; i++)     {          sendstringtoprinter(myarray[i]); // no need tostring() it's string     }      // re-enable print button marshalling ui thread     this.invoke(new methodinvoker(delegate()      {           btnprint.enabled = true;     }));      } 

the call array.clear() shouldn't needed myarray local variable , therefore destroyed anyway when sendtoprinter method (and thread) ends.