WebMar 11, 2024 · Note that method syntax must be used here. IEnumerable differenceQuery = names1.Except (names2); // Execute the query. Console.WriteLine ("The following lines are in names1.txt but not names2.txt"); foreach (string s in differenceQuery) Console.WriteLine (s); // Keep the console window open until the user presses a key. WebApr 11, 2024 · You can try something like this to see if a list of string has duplicates. public static bool ListHasDuplicates (List lst) { bool result = false; var distinctList = lst.Distinct ().ToList (); result = (lst.Count () == distinctList.Count ()); return !result; } Please sign in to rate this answer. 1 person found this answer helpful.
Various Ways to Get Distinct Values from a List using …
WebJan 25, 2024 · To get a unique value in a List: Import the System.Linq namespace Use the Distinct method on your list. (optional) Get a list using the ToList method. Full code example: C# List numbers = new() { … WebNov 29, 2024 · var count = group.Count; } So the above will output the following: group1: Value 1 Count 2 group2: Value 2 Count 2 group3: Value 4 Count 2 group4: Value 8 Count 2 group5: Value 54 Count 1 I want to only count the Distinct Values by ID So for the above the groups 3 and 4 would only have count=1 as they have the same ID values group3: …grady\\u0027s chocolate bar cake recipe
What is C# Linq Distinct? Explained With Examples Simplilearn
WebDec 21, 2024 · Distinct. This removes all duplicate elements in a collection. It returns only distinct (or unique) elements. The System.Linq namespace provides this extension method. Distinct returns an IEnumerable collection. We can loop over the collection returned by Distinct, or invoke other extension methods upon it. IEnumerable An example.WebMar 30, 2024 · c# linq select only unique values from list; c# find duplicates in list; c# distinct comparer multiple properties; c# distinct dictionary; select distinct two columns … WebJul 14, 2024 · Use GroupBy () and Select () to Obtain a Distinct List Based on One Property in C#. So before we start our example, let’s first add the LINQ library to our code: using SYSTEM.Linq; Then let’s go forward and …china 2023 public holiday