Question

A boolean (bool) can’t be null. And:

bool foo; if(foo){} // Use of unassigned local variable 'foo'

Why the default value is not false? So what is the value if it is not null?
What is the reason?

Edit 1 – The default value is indeed false – but all variable should be initialized, why? this is for another question 😉

Edit 2 – with Resharper : private bool foo = false; // Initializing field by default value is redundant ???

Answer 1

http://msdn.microsoft.com/en-us/library/83fhsxwc.aspx

Remember that using uninitialized variables in C# is not allowed.

With

bool foo = new bool();

foo will have the default value.

Boolean default is false