Remove duplicates while merging lists using Union in LINQ

Question

I am trying to merge two lists using list.Union in LinqPad but I can\'t get it to work and wanted to check my understanding is correct.

Giv

Answer 1

You can create a class implementing

IEqualityComparer

Is this class define Equals and GetHashCode After it you can pass this comparer to you Union method Just like that:

public class MyComparer:IEqualityComparer{
//Equals and GetHashCode
}

var mergedList = list.Union(list2, new MyComparer()).ToList();