in my html doc ---> <asp:Button Text="Submit" Runat=server OnClick="update" id=Button1 />
in my code behind ---> Dim dblInput As Double = CDbl(input.Text)

if i remover the ".text" from the above line i get this error:

"value of type 'system.web.ui.webcontrols.textbox' cannot be converted to 'double'"

That is correct. If you remove the .text you are then referring to the control itself which cannot be converted to a double.

thanks, that clears up alot
so the .text refers to the actual text in the control and the input part will refer to the control itself which obsviously can't be converted to a dbl

thanks!!!!!!

no problem :)