C# LINQ How to Check if any element in a String array contains 'Error' or IsNullOrEmpty

I have a statement that checks if any element in a string array contains Error text value.

bool containsError = myStringArray.Contains("Error", StringComparer.InvariantCultureIgnoreCase);

How can I add another condition to also check if any element isNullOrEmpty?

>Solution :

One way is to add a condition with Any():

bool containsErrorOrEmptyElement = myStringArray.Contains("Error", StringComparer.InvariantCultureIgnoreCase)
                                   || myStringArray.Any(s => string.IsNullOrWhiteSpace(s));

I used string.IsNullOrWhiteSpace after assuming it better fits your requirements; you can also use string.IsNullOrEmpty instead.

You can also use LINQ’s Any for both conditions, by using the string.Equals method for case-insensitive comparison:

bool containsError = myStringArray.Any(s => string.IsNullOrWhiteSpace(s)
    || s.Equals("Error", StringComparison.InvariantCultureIgnoreCase));