Return values from a function

I want to return four values (more than one) from a function to its caller.

Four values are of four datatypes(int, long, double, string).

I just know how to return one value from a function. But how can I return more than one ?

Is it possible ?

plz, Give an example.

--Rajib

technically a function is only meant to return one value, so you should create a class or structure that will hold your four values.
You could use the out keyword, but it's not a good solution

Thanks for your help.

But I have found that it is easily solved by Reference passing.


---Rajib

Something to bear in mind an argument passed by ref must be first initialised. An out does not have to be initialised.

Can you tell me more about the out keyword?

further reading:
out

ref

Ah, so the out keyword is quite like those from SPs. Yet another feature I wish VB.NET had. :cry:

ref exists in VB.NET. When you pass an argument to a function, you can do it ByVal or ByRef.

An interesting thing with C# is that using out, ref or neither of them for a given function parameter defines different function signatures. This allows the overloading of a function in this way :

Code:

---

        void testfunction(int iVal)
        {
        }

        void testfunction(ref int iVal)
        {
        }

        void testfunction(out int iVal)
        {
        }

---

All is well if used only in C#, but you cannot use this function in VB through a compiled assembly because it is ambiguious in VB because in VB you don't tell the compiler that you want to send your function parameter ByVal or ByRef.

Code:

---

//this is a valid overload
void testfunction(int iVal){}
void testfunction(ref int iVal){}

//so is this
void testfunction(int iVal){}
void testfunction(out int iVal){}

//this is not a valid overload
void testfunction(ref iVal){}
void testfunction(out int iVal){}

---

My bad, I assumed that it would be valid too, I never tried to mix out and ref before...