Check Duplicates in a List

Check Duplicates in a List

Hi Experts, I have a List<T> listA i am adding another List<T> listB which contains diferent values, sometime same values everytime into listA in AddRange Method. How i ll check the duplicate from listA before Adding the listB values to it.

Please suggest solution.

Thank you. 

Answers & Comments...

Answer: 1

http://msdn.microsoft.com/en-us/library/bb397894(v=vs.90).aspx

Answer: 2

listA = listA.Union(listB);

Answer: 3

Saroj Kumar

Please suggest solution.

 var admins1 = new List<AdminRequest>();              var admins2 = new List<AdminRequest>();                admins1.AddRange(admins2.Distinct());  

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