vb.net updating textbox 'live'

[JUMPURS]

I have a wpf application i am doing in vb 2008. When it runs it does stuff and is supposed to write to a text box as it happens.
I am using textbox1.text += "blahhhh"

But i am finding that it waits till it is completely finished everything before it updates and does them all at once.

Any help.

 

[JUMPURS]

Will that interupt the thread?
I have got around it now by using application.doevents() after every time i write something to the text box.

 

[JUMPURS]

Thanks guys, i'll have a look at that

Cheers