Compiler Error for Nullable Bool

Question

 bool? ispurchased = null;
    var pospurcahsed= ispurchased ? \"1\":\"2\";

Its generating exception .

Cannot implicitly con

Answer 1

The issue you have is that the conditional operator ? : expects a bool, not a bool?. You could just cast it and be done, but you'd get an InvalidOperationException if the value contained a null, so you should probably check for that first.

Given the name of your variable, I've gone ahead and assumed you'd want to treat a null as you would false, so in the code below I check to ensure it has a value, and if it does then it'll use it in the condition. In the event it doesn't have a value (i.e. it's null then the cast will never happen and you won't get the error (the expression would evaluate to false).

bool? ispurchased = null;
var pospurcahsed = (ispurchased.HasValue && (bool)ispurchased) ? "1":"2";