i am loading a program into richtext box. Before when i click a button anyone cannot load another pgm into the same richtextbox?

Question

i am loading a program into richtext box. Before when i click a button, anyone cannot load another pgm into the same richtextbox,.....
how will do this???? but here i can do that, so i want disable that, how is it possible???

any help....

krishna prasad · Answer

Hai Vishnu am loading a program into richtext box....wat does it mean..can u be more clearer abt ur requirements With Regards P.Krishna Prasad

i am loading a program into richtext box. Before when i click a button, anyone cannot load another pgm into the same richtextbox?