Prism DelgateComand throws an exception

Question

I have a static delegate command. I'm passing a bool to the constructor. However, it is throwing a runtime exception.

public static class myViewModel
{
    public static ICommand myCommand {get; private set;}

    static myViewModel
    {
        //If I change the bool to Object, or to Collection type, no exception assuming that I change myMethod parameter as well to the same type.
        myCommand = new DelegateCommand<bool>(myMethod);
    }

    private static void myMethod (bool myBoolean)
    {
        //To Do
    }
}

Answer 1

Always, always, always tell us what type of exception you got, and what the exception message was. They have many, many different exceptions because every one is thrown for a different reason.

But in this case, it looks like the problem is that bool is a value type, and the code that executes the command is passing it a null for a parameter. But you can't cast null to a value type, and trying to do so will cause a runtime exception:

object o = null;
//  This will compile, but blow up at runtime. 
bool b = (bool)o;