Question

Visual Studio seems to complain when I pass a string into an exception parameter.

if (str1 == null || str2 == null) {     throw new ArgumentNullException('lmkl'); } 

Visual Studio says that it cannot resolve symbol 'lmkl'.

If I have a string variable (eg above throw new... string s = 'test';) and include this as the parameter for the exception, Visual Studio is more than happy with this.

What gives?

Thanks

Answer 1

The documentation for the overloaded constructor for ArgumentNullException that takes a single string parameter states that this argument should be:

The name of the parameter that caused the exception.

At the moment, if your code throws an exception you won’t know which argument was null.

Recommend rewriting to

if (str1 == null) throw new ArgumentNullException('str1'); if (str2 == null) throw new ArgumentNullException('str2');