Use of unassigned variable?

Question

I\'m getting the error use of unassigned variable \"ps\" when declaring if paymentstatus is null or has value in the \"if\" statement. I\'m thinking that i allready declared ps

Answer 1

Yes, you did declare the variable.

Yet it says "unassigned" not "undeclared", and you didn't assign any value to the variable. Just set it to null.

Answer 2

You haven't initialized ps...you need to initalize it with at least null value...

PaymentStatus? ps = null;

The same applies to all other variables

Answer 3

It is an unassigned variable i.e. you havent initialised it with a value.

Answer 4

Initialize your ps variable like

PaymentStatus? ps = null; //or something. 

From Compiler Error CS0165

C# compiler does not allow the use of uninitialized variables. If the compiler detects the use of a variable that might not have been initialized, it generates compiler error CS0165

Answer 5

You have declared the local variable but you have not assigned a value. Therefore the compiler helps you to prevent this bug.

PaymentStatus? ps;  
// ...
if (ps.HasValue)

So assign a value:

PaymentStatus? ps = null;  
// ...
if (ps.HasValue)

However, thix fixes the compiler error but is still pointless since it will never have a value. Maybe you want to use a method parameter instead:

public IList<BestsellersReportLine> DailyBestsellersReport(PaymentStatus? ps)
{