WebMar 30, 2024 · You can use Dictionary.Values and LINQ: bool containsOneNotNullValue = productsDictionary.Values.Any (s => s != null); But of course this also uses a loop to find that out, the loop is just hidden in a method. Share Improve this answer Follow edited Mar 30, 2024 at 13:50 answered Mar 30, 2024 at 13:48 Tim Schmelter 445k 72 678 929 WebAnother option you have is to make use of the "NullValueHandling" attribute: [JsonProperty ("yourPropertyName", NullValueHandling = NullValueHandling.Ignore)]. That should help reduce the need for the null checks which will refine your if checks a bit. Just thought I'd mention it as you may find it handy. – Erick Brown Dec 30, 2013 at 17:42
c# - Automapper and null dictionaries - Stack Overflow
WebJan 27, 2024 · dictionary = null; // This easy statement will ensure your Dictionary functions correctly if it came through as a null and will fix your issue. if (dictionary == null) dictionary = new Dictionary (); // You can now use Dictionary methods. if (!dictionary.ContainsKey ("key")) Console.WriteLine ("key"); Posted 16-Sep-21 0:24am Web3 Answers. I've never used CLI, but a quick MSDN search for the Dictionary container shows it has a Count property which indicates "The number of key/value pairs contained in the Dictionary". Presumably you can test this value for zero. the .net object Dictionnary has a property named Count. I guess the c++/cli can call the value of that ... easy cash marmande
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WebJan 26, 2024 · dictionary = null; // This easy statement will ensure your Dictionary functions correctly if it came through as a null and will fix your issue. if (dictionary == … WebMay 2, 2013 · That's usually simpler than a dictionary where each value is a list, even though they're conceptually very similar. A lookup has the nice feature where if you ask for an absent key, you get an empty sequence instead of an exception or a null reference. Share Improve this answer Follow edited Feb 11, 2016 at 23:01 answered May 2, 2013 … WebJan 3, 2013 · @arao6 This would change the contract of the Dictionary class. Instead of the exception, you will get a default value. This means that null reference exceptions can … cuphead how to beat cala maria