datatype

[farshad]

Hi,

My question is to do with the datatype?

In the constructor of a class, I am initializing the variables which are of various types (i.e: string, double, decimal, etc...)

These are initialized such as "" for string and 0 for int or 0 for double, etc...

Let's say that during a call to the DB, only one of them gets set (i.e: the string variable = "hello") but the other variables are not set. So obviously the other variables are set to 0 of they are decimal for example.

The question is that how is it possible to find out that the other variables that were not set?. I.e: how can I return null for the other variables?

 

Hope this is clear

Thanks

[I Schobert]

I am not quiet sure that I understand your question.

 

What I get is that you wish to have variables that return only values when they are assigned, and otherwise Null.

 

How about if you don't assign a default value to them and declare them at the beginning of the class, like:

 

Private myVariable as String

Private myOtherVar as Double

 

Now, in case of a db call, only assign values to the ones that do not have a dbNull return (test for "Not IsDbNull").

 

All other variables should have a value of Nothing at this point.

 

Does that help?