Looking for c# Answers? Try Ask4KnowledgeBase
Looking for c# Keywords? Try Ask4Keywords

C# LanguageNull-conditional Operators


  • X?.Y; //null if X is null else X.Y
  • X?.Y?.Z; //null if X is null or Y is null else X.Y.Z
  • X?[index]; //null if X is null else X[index]
  • X?.ValueMethod(); //null if X is null else the result of X.ValueMethod();
  • X?.VoidMethod(); //do nothing if X is null else call X.VoidMethod();


Note that when using the null coalescing operator on a value type T you will get a Nullable<T> back.