cannot implicitly convert type 'bool?' to 'bool'. An explicit conversion exists (are you missing a cast?)

Question

Error : cannot implicitly convert type \'bool?\' to \'bool\'. An explicit conversion exists (are you missing a cast?)

Code :

Answer 1

As the others stated bool? is not equal to bool. bool? can also be null, see Nullable (msdn).

If you know what the null state wants to imply, you easily can use the ?? - null-coalescing operator (msdn) to convert your bool? to bool without any side effects (Exception).

Example:

//Let´s say "chkDisplay.IsChecked = null" has the same meaning as "chkDisplay.IsChecked = false" for you
//Let "check" be the value of "chkDisplay.IsChecked", unless "chkDisplay.IsChecked" is null, in which case "check = false"

bool check = chkDisplay.IsChecked ?? false;