Proper way to pass a catch back to the parent page.

[darrel]

I have a .aspx.vb page that calls a function in a .vb file that has a try
catch.

Usually, I use a catch to display an error. In this case, I want the parent
page to know if the function errors out or now. What's the proper method to
pass this information back to the page?

For insance, here's my aspx.vb page:
------------------------
myFunction()
------------------------

and my .vb class:
------------------------
function myFunction()
try
this
catch
show error
end try
end myFunction

 

[Karl Seguin [MVP]]

Darrel:
I just finished a post about properly handling exception, I think you'll
find it useful,it's somewhat long though

http://codebetter.com/blogs/karlseguin/archive/2006/04/05/142355.aspx

you can simply use "throw" to retrhow an exception in your catch, which will
bubble it back up, but hopefully you'll learn more about exceptions

Karl

 

[Steve C. Orr [MVP, MCSD]]

You could rethrow the error as Karl mentioned, or you could have your
function return a parameter that signifies an error, which would likely have
better performance.
Something like this:

function bool myFunction()
try
this;
return false; //no error
catch
show error;
return true; //true signals error
end try
end myFunction

 

[darrel]

http://codebetter.com/blogs/karlseguin/archive/2006/04/05/142355.aspx

I'll give it a read!

-Darrel