WebTo remove duplicates from a list based on multiple fields or columns in C#, you can use the LINQ GroupBy method to group the items in the list by the fields or columns that you want to use as keys, and then select the first item from each group. Here's an example: In this example, we have a list of Person objects with three fields: FirstName ... WebJan 19, 2010 · To check for duplicates using a hash set we can start out by assuming that no duplicates exists. We then add items to the set until we either run out of items or until …
C# Tip: Use a SortedSet to avoid duplicates and sort items
WebApr 14, 2024 · Method 2: Using Split () and Distinct () Another way to remove duplicate words from a string in C# is to use the Split () method to split the string into an array of … WebApr 14, 2024 · Method 2: Using Split () and Distinct () Another way to remove duplicate words from a string in C# is to use the Split () method to split the string into an array of words, then use the Distinct () method to remove duplicates, and finally join the array back into a string. Here's an example: string input = "C# Corner is a popular online ... please help yourself to some cakes
Find duplicates in an array in C# Techie Delight
WebSep 15, 2024 · C#. class QueryDuplicateFileNames { static void Main(string[] args) { // Uncomment QueryDuplicates2 to run that query. QueryDuplicates (); // QueryDuplicates2 (); // Keep the console window open in debug mode. Console.WriteLine ("Press any key to exit."); Console.ReadKey (); } static void QueryDuplicates() { // Change the root drive or … WebNov 16, 2024 · SortedSet: a sorted collection without duplicates. To sort those items, we have two approaches. You can simply sort the collection once you’ve finished adding items: Or, even better, use the right data structure: a SortedSet. Both results print Bari,Naples,Rome,Turin. WebThe test for duplicates would then be var hasDupes = dupList.GroupBy (x => new {x.checkThis, x.checkThat}) .Where (x => x.Skip (1).Any ()).Any (); or even call ToList () … please help yourself with food