Operator Cannot be applied to operand
 

private double avgdailyprice = 1;

Print("Show this: " && avgdailyprice);

What language; C#? && is the and operator, you cannot concat with that. Use + for string concatenation. I don't think the && exists in VB.NET; the & would be concat. Although I think that + is overloaded to work with strings in VB.NET as well, but I cannot recall.

def not C# or VB

'Print' as it relates to the context is not a valid C# or VB method

its C#, thanks, the + worked.

Oh yeah good call. That'd be writeline in C#. Java could use print, but only off of a statically imported java.lang.System.out, and would still need out.print called on it.
Perhaps a custom method in place here.

You should write + sign for concatenation in C# like console.WriteLine("hello"+"World");