How to set a default value for a variable in C #?

Question

I want to set a variable to the default value if the assignment returns null or something else.

string a = GetValue();

if GetValue returns null, then I want to have a default value for the variable a, how to do it in C #. Do not try to use if.

Thanks for the time.

Answer 1

Use a null coalescing operator.

string a = GetValue() ?? "Default";

Answer 2

string a = GetValue() ?? "DefaultValue";

Answer 3

This will

string a = GetValue() ?? "default value";

Answer 4

How about this one?

string a = GetValue() != null ? GetValue() : "default";

Answer 5

string a = GetValue () == null? string.empty: GetValue ();