Hello everyone,
I have some problem with my windows application in my system. when ever i right click in the tool box and select choose items, the application got closing. Can, any one help me how can i resolve this problem.

what application ?
which textbox ?
choose what ?
why choose ?
.... ?

HOW MUCH I NEED TO GUESS ?

You, dint get me clearly. Its not textbox, its tool box in a Windows Form application. If i want to add one ajax tool kit to the tool box, then i will go to the tool box and right click, where i will select "Choose Items" Option, immediately the application gets closed.

u mean, when u click choose items in toolbox, yr application form close..

are choose toolbox items not display when u click choose items on right click??

May be it got corrupt, you need to repair or reinstall the application.