How to extract duplicate value in arraylist in c# [duplicate]

This question already has answers here: 开发者_开发问答 Remove duplicates from a List<T> in C# (32 answers) Closed 7 years ago.

I have a array list which have a list of a type, but all values are duplicated.

Specifically, my blog url is in my array list twice. How can I remove the duplicates?

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arraylist.distinct();

Make sure you have using System.linq at the top of your cs file.

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The earlier answer is correct but just to add to it, you need to specify the type when you create the list. Arraylist does not have a distinct method by itself. Here is how you would do it,

List<string> foo = new List<string>();
foo.Add("sample");
foo.Add("sample");
...
IEnumerable bar = foo.Distinct();

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Remove duplicates from a List<T> in C#

How do I remove repeated elements from ArrayList?