How do I pass a web control reference to a class?

  • Thread starter Thread starter Sam
  • Start date Start date
S

Sam

Hi,

I write my code behind in C# and everytime I need a new functionality, I
build a class for it and save it in a folder I call ClassLibrary.

My question is I don't know how to send my web controls to these classes.
For example, I created a standard States and Countries class which simply
gets a list of all US states and countries in the world from the database.

This took care of getting the necessary data from the database but I still
write a lot of repetitive code because I want to bind the data to the
specific DropDownList controls I use on my ASPX page. My classes are still
pretty useful as they go fetch the data for me but I realize that I'm not
using classes to their full potential.

Someone once told me that I could pass my DropDownList control to my class
and let the class, populate it, bind it to the control and whatever else I
need to do and return it to the ASPX page all ready to be used.

I'd appreciate some simple code samples or a pointer to a web page someone
already created so that I can see how this is done. Thanks for all your
help.

Thanks,

Sam
 
Hi Sam,
This took care of getting the necessary data from the database but I still
write a lot of repetitive code because I want to bind the data to the
specific DropDownList controls I use on my ASPX page. My classes are still
pretty useful as they go fetch the data for me but I realize that I'm not
using classes to their full potential.
Click to expand...

How do you keep the data inside that classes? if you keep it on a ArrayList
or collection then you can bind it to the ASP.net control and just call
DataBind() , Another solution would be create a strong typed collection of
State/Country and bind this collection to the control.
Someone once told me that I could pass my DropDownList control to my class
and let the class, populate it, bind it to the control and whatever else I
need to do and return it to the ASPX page all ready to be used.
Click to expand...

And what would happen if you tomorrow decide to use these same classes for
a windows application?
You would have to write code to do the same thing. Another scenario would
be if you decide to bind the data to a control other than a DropDownList.
This imply that what you propose is not the best way, in fact the opposite
would be the correct use, create a collection of those objects in such a way
that you could use ANY control to bind them to.


Hope this help,
 
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