Default function parameters in VB.NET

[burak]

Hello,

 

In C/C++ you can have functions with default values.

 

From http://www.uq.net.au/~zzmiadam/tute/Basic/functions.htm

 

" char DefaultFunc( int A = 5 )

 

means that if the function is called without any parameters passed, the value for A defaults to 5, otherwise it takes on the value passed, so:

 

result = DefaultFunc(22) ; //A is assigned a value of 22

result = DefaultFunc() ; //value of A defaults to 5

 

"

 

Can you do the same in VB.NET?

 

I have a function that returns the next business day

 

"Function ReturnNextBusinessDay(ByVal inDate As Date) As Date"

 

I want the function declaration to be in such a way that inDate will have a blank default value. The function will use today's date if inDate is blank.

 

How can this be done?

 

Thank you,

 

Burak

[mutant]

You can use the Optional keyword, but this is only supported in VB.NET and not in any other language. The right way to do this is to make overloads.

[burak]

Thanks,

 

I wrote a declaration like this

 

Function ReturnNextBusinessDay(Optional ByVal inDate

As Date = #1/1/1000#) As Date

 

I just check for 1/1/1000 in the function and use

today's date if function was called with no

parameters.

 

I would like to compile this function and make it

available to other pages in the project.

 

- What kind of file should I place this function in ?

 

ie.. .aspx, etc...

 

- How do I call this function from other pages? From

the code behind files especially.

 

Thanks,

 

Burak

[mutant]

If you want all pages to have access to it then put in a class in your project, and make the function shared if you dont want to create objects of the class.