remove duplicate string

Question

i have one list List lstEmail = new List (); foreach (var item in lstEmail) { string[] strEmailIDs = item.EmailID.Split(','); } but i want to remove duplicate values from these string

Jayakumar Balasubramaniam · Answer

Hi, The below code snippet works, fine for me. string EmailID = "jai,arut,jai" ; string [] strEmailIDs = EmailID.Split( ',' ); List string > listEmailIDs = strEmailIDs.ToList(); List string > distinct = listEmailIDs.Distinct().ToList(); EmailID = distinct.Aggregate((current, next) => current + "," + next); Please try this.

Jayakumar Balasubramaniam · Answer

Okay.

Pooja Chowdhury · Answer

i am sorry to say i didnot add namespace using System.Linq; now all the code is working

Jayakumar Balasubramaniam · Answer

Can you post error message or it's screen shot here ? so it would be easy to figure out the issue.

Pooja Chowdhury · Answer

string[] strEmailIDs = item.EmailID.Split(','); List listEmailIDs = strEmailIDs.ToList(); List distinct = listEmailIDs.Distinct().ToList(); item.EmailID = distinct.ToArray(); i used this but same error show red color under Distinct()

Jayakumar Balasubramaniam · Answer

Hi Pooja, Do you want to remove duplicates from strEmailIDs? if so please follow below code snippet List listEmailIDs= strEmailIDs.ToList(); List distinct = listEmailIDs.Distinct().ToList(); So basically we could use Distinct method to remove the duplicates. Thanks, Jayakumar B

siddhartha sharna · Answer

List lstEmail = new List () ; List final = new List (); foreach (var item in lstEmail) { string[] strEmailIDs = item.Split(','); foreach (var x in strEmailIDs) { if (!final.Contains(x)) { final.Add(x); } } } Final List contains non duplicates reports.

Nanddeep Nachan · Answer

Use LINQ var distinct = items.DistinctBy( i => i.EmailID );

Pooja Chowdhury · Answer

Please check

Jayakumar Balasubramaniam · Answer

Please replace your foreach like below snippet, I beleive it will help you. foreach (var item in lstEmail) { string [] strEmailIDs = item.EmailID.Split( ',' ); List string > listEmailIDs= strEmailIDs.ToList(); List string > distinct = listEmailIDs.Distinct().ToList(); item.EmailID=distinct.ToArray(); // here we remvoed the duplicates and assigned to EmailID again }

Pooja Chowdhury · Answer

i got error i want to remove in foreach loop