Can't use quick watch wile debugin in if statement Visual Studio

The problem looks like this:

I have an if statements in my code.

if (tcd.TrescWartosc != null)
                    {
                        var document = new ISDocument();
                        document.DocContent = tcd.TrescWartosc;
                        int count = 0;
                        int count2 = 0;
                        count = count + 2;
                    }

It's just a fragment of the code inside the statement and some variables that I've added to test my errors (count and count2) The problem is that when i debug开发者_StackOverflow the project in this one "if" when i check any variable I'm getting 'don't exist in the current context' error. When I comment out the if fragment everything is ok. I've tried with if(true) and the problem remains so what could be the reason for this?? Pin to source also shows nothing...

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The problem was visual studio itself...Above I had another if with code and statement like

 if (!tcd.Wyslano)
                    {
                    ...
                    ...
                    }

I wanted to ommit that "if" so I've replaced if (!tcd.Wyslano) with if(false) and Visual Studio had some problem with that...I've replaced it now with if (!tcd.Wyslano && false) and now it debugs ok so i thinks it was kind of VS bug...