How to understand C# warning IDE0059: "Unecessary assignment"

Question

I have the following scenario:

public void testmylife (ref string a)
{
string wstr = string.empty;

if (a == 1)
{
wstr = "Drop dead";
}

if (a == 2)
{
wstr = "Stay alive";
}
}

I get IDE0059. How do I avoid that warning?

Answer 1

as there is no code that uses the value wstr is set to, there is no point in setting a value to it. if you removed the unneeded assignments, you would get a warning about an unused variable.

your code snippet could be simplified to:

public void testmylife (ref string a) 
{
}

and function the same: