.net - method to search through all controls and only picking out a certain type -

i looking methods can loop through controls on page , pick out types. in case, looking html element textarea.

i have loop...

for each control htmltextarea in mydiv.controls.cast(of htmltextarea)()      if typeof control htmltextarea         ...do something...     end if  next 

but fails when reaches control other htmltextarea saying unable cast said control htmltextarea.

thanks

you need use oftype instead of cast.

for each control htmltextarea in mydiv.controls.oftype(of htmltextarea)()      'if no longer needed, control htmltextarea     ...do something...  next 

msdn oftype