How to combine two List in Linq c#?

Union(list2). ToList(); This will return a List in which the two lists are merged and doubles are removed. If you don’t specify a comparer in the Union extension method like in my example, it will use the default Equals and GetHashCode methods in your Person class.

How to merge two lists in c# using Linq?

If you want to remove duplicates and get an unique set of elements you can also use Union method: var result = list1. Union(list2). OrderBy(x => x.

How do you create a union list in C#?

Use of Union

1. List collectionOne = new List() { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
2. List collectionTwo = new List() { 1, 2, 3, 11, 12, 13, 14, 15 };
3. var unionResult = collectionOne.Union(collectionTwo);
4. foreach (var item in unionResult)
5. {
6. Console.Write(item +” “);
7. }

How do you write a Union query in Linq?

C# LINQ Union Example in Method Syntax

1. string [] kolkataResidents = { “Kapil” , “Manmohan” , “Deepak” , “Amit” };
2. var allResidents = delhiResidents.Union(kolkataResidents);
3. foreach (var item in allResidents) {
4. Console.WriteLine(item); }

What is System Linq in C#?

The System. Linq namespace is in the System. The Enumerable class contains LINQ standard query operators that operate on objects that implement IEnumerable. The Queryable class contains LINQ standard query operators that operate on objects that implement IQueryable.

How do you sort a list in C#?

Sort() Method Set -1. List. Sort() Method is used to sort the elements or a portion of the elements in the List using either the specified or default IComparer implementation or a provided Comparison delegate to compare list elements.

Does Linq Union remove duplicates?

Linq, acts upon 2 collections. It returns a new collection that contains the elements that are found. Union removes duplicates. So this method can be thought of as two actions: it combines the two collections and then uses Distinct() on them, removing duplicate elements.

What is Plinq in C#?

Parallel LINQ (PLINQ) is a parallel implementation of the Language-Integrated Query (LINQ) pattern. PLINQ implements the full set of LINQ standard query operators as extension methods for the System. PLINQ combines the simplicity and readability of LINQ syntax with the power of parallel programming.

How do you create a union with two lists in C#?

Join two lists in C#

1. Using Enumerable. Concat() method. The Enumerable.
2. Using AddRange() method. f you need to merge the second list into the first list, use the AddRange() method to add all elements of the second list at the end of the first list.
3. Using List. ForEach(Action) method.

What is the advantage of LINQ in C#?

Advantages of Using LINQ LINQ offers a common syntax for querying any type of data sources. Secondly, it binds the gap between relational and object-oriented approachs. LINQ expedites development time by catching errors at compile time and includes IntelliSense & Debugging support. LINQ expressions are Strongly Typed.

Is list sorted C#?

C# List sort strings. Like integers, strings are sorted by Sort alphabetically by default without any additional effort. using System; using System. Collections.