variable unassigned

Ben

I have created a very simple little program that adds a value to a string variable once tested if its empty.... My problem is that VS 2010 tells me that the variable is uns=assigned in my if conditional parameters. I have done java and c++ for a number of months now with little trouble so this is boggling me...

Here is my code:

 static void Main(string[] args)
        {
            string anotherStr;

            if (anotherStr == "") 
            {
                anotherStr = "bye";
            }

            Console.ReadKey();

        }

I appreciate the help

11 Replies

Know the answer? Post it — somebody with the same question will find it here.

Jaish Mathews16y ago
SAM,
You are right. The supress message is for un used variables, not for non initialized variables. More over after any VS 2005 version you will get this error. Below link saying about that why made this change.
http://msdn.microsoft.com/en-us/library/4y7h161d.aspx
Sam Hobbs16y ago
I have VS 2010 Professional and when I right-click the message I don't see an option to suppress the message. I probably do not have FxCop installed; it is not part of VS.

Are you sure that the message is just a warning? I thought that .Net requires that string objects be initialized.
Jaish Mathews16y ago
Hi,
It was typo. I meant for message, not machine.
Right click on the error message displaying in VisualStudio and select supress message to skip that part by FxCop[This is the internal tool doing code analysis] .It may not available in express edition. But in team system version I am seeing it.

manas maadul16y ago

(#include ) 
add this header and try it
Good Luck!!!!!!!

Ben16y ago
Ya I must admit, this right-click on machine thing is new to me as well.
Sam Hobbs16y ago
Jaish: I know how to right-click on the mouse but I don't know how to right-click on the machine. If Ben understands then you do not need to explain but it is not clear to me and might not be clear to Ben.
Jaish Mathews16y ago
Ben,
It's actually not additional code, but optional only. All code analysis mesages are optional. i.e. if you don't need VS to check some of code analysis, you can ternoff by right click on the machine and select supress. It may nt available in express edition. But in team system version I am seeing it.
Sam Hobbs16y ago
Yes Ben there are some frustrating peculiarities of C#. One thing I suggest learning about is structs and classes; in C++ they are essentially the same but in C# they are quite different. You will see many, many uses of the terms value type and reference type but not much mention that value types are structs and reference types are classes.
theLizard16y ago
Spot on Ben...
Ben16y ago
that sucks you have to type in all that extra stuff just to use the default value. I guess C# wouldnt be similar to java if it didnt need an uneccessary amount of code.

Thanks a lot for the help
Jaish Mathews16y ago
Hi,
That's a part of code performance checking from VS 2010. A variable is using without a default value. So u need to change ur declaration like below i.e. with default value
string anotherStr = string.Empty;