In C#, null is a special value that represents the absence of a value. Null can be assigned to reference types and nullable value types, but it cannot be assigned to non-nullable value types…

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Learn about 7 null handling techniques in C#, including the null coalescing operator, conditional operator, and null-conditional operator.

Null Handling Techniques in C#

4. Null-coalescing assignment operator (??=)

For example here:
public void DoSomething (string name)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
Console.WriteLine($“Hello, {name}!”);
}
You can reverse it and do this:
For example here: public void DoSomething(string name)
{
if (name != null)
{
Console.WriteLine($“Hello, {name}!”);
}
throw new ArgumentNullException(nameof(name));
}