Multithreading using VB.net Throws error -


am new vb.net multithreading.

currect me if i'm doing wrong.

what i'm trying :

user's needs put serial no's textbox program needs pick model , warranty infomation vendor website when user hit search button.

my windows form have 2 textbox's , 2 webbrowsers , 1 datagridview control.

what i'm trying when user hit search buttom code needs below things

thread1: pick serial no textbox1 , needs information web using webbrowser1 thread2:pick serial no textbox2 , needs information web using webbrowser2

my code looks 

dim thread1 system.threading.thread dim thread2 system.threading.thread      private sub button1_click(byval sender system.object, byval e system.eventargs)          handles button1.click      thread1 = new system.threading.thread(addressof thread11)     thread1.start()      thread2 = new system.threading.thread(addressof thread22)     thread2.start()     end sub   private sub form1_load(byval sender system.object, byval e system.eventargs) handles       mybase.load     me.checkforillegalcrossthreadcalls = false end sub   sub thread11()  ' takes serial no text1 , searches information using webbrowser1 goes here end sub   sub thread22()  ' takes serial no text2 , searches information using webbrowser2 goes here   end sub

but i'm getting below error messange when debug code

an error occurred creating form. see exception.innerexception details. error is: activex control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot instantiated because current thread not in single-threaded apartment.

it great if tell i'm doing wrong , needs done ,

thanks sathish

when create threads, try set apartment state.

thread1 = new system.threading.thread(addressof thread11) thread1.setapartmentstate(apartmentstate.sta) thread1.start()  thread2 = new system.threading.thread(addressof thread22) thread2.setapartmentstate(apartmentstate.sta); thread2.start()

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