WebIn this example, we first initialize a List called myList to null. We then check if myList is null or if its Count property is equal to zero. If either of these conditions is true, we print a message indicating that the list is empty or null. If the list is not empty or null, we print a message indicating how many items are in the list. WebMar 13, 2024 · The following code example shows us how to check whether a list is empty or not with the List.Count property in C#. using System; using …
c# - Better to check if length exceeds MAX_PATH or catch ...
WebOct 20, 2024 · If the list is empty will return false because there is no next element. Take a look at the source code here. The worst result was for FirstOrDefault () method from LINQ. Again this method cast... WebJul 15, 2010 · Count () must actually enumerate all elements of the sequence - which may be expensive if the sequence is based on multiple LINQ operations (or comes from a database). You should use the Any () extension method instead - which only attempts to see if there is at least one element in the list, but will not enumerate the entire sequence. csf soccer
c# - Return null from ToList() if list is empty? - Stack …
WebIn this example, we first initialize a List called myList to null. We then check if myList is null or if its Count property is equal to zero. If either of these conditions is true, … Web1 day ago · Upcasting and downcasting are important concepts in C# programming that allow us to convert an object of one type to another type. These concepts are essential to work with polymorphism and object-oriented programming. In this article, we will explore how upcasting and downcasting work, when to use them, and common pitfalls to avoid. WebI know generally empty List is more prefer than NULL. But I am going to return NULL, for mainly two reasons. I have to check and handle null values explicitly, avoiding bugs and … e12 light bulb base with b10 bulb shape