How to – Remove duplicate objects in list in C#


Just sharing a sample code to remove duplicates from a list using linq

</p>
<p>public class MyClass<br />
{<br />
public string ID { get; set; }<br />
public string Value { get; set; }</p>
<p>}</p>
<p>List&lt;MyClass&gt; myList = new List&lt;MyClass&gt;();<br />
var xrmOptionSet = new MyClass();<br />
xrmOptionSet.ID = "1";<br />
xrmOptionSet.Value = "100";<br />
var xrmOptionSet1 = new MyClass();<br />
xrmOptionSet1.ID = "2";<br />
xrmOptionSet1.Value = "200";<br />
var xrmOptionSet2 = new MyClass();<br />
xrmOptionSet2.ID = "1";<br />
xrmOptionSet2.Value = "100";<br />
myList.Add(xrmOptionSet);<br />
myList.Add(xrmOptionSet1);<br />
myList.Add(xrmOptionSet2);</p>
<p>// here we are first grouping the result by label and then picking the first item from each group<br />
var myDistinctList = myList.GroupBy(i =&gt; i.ID)<br />
.Select(g =&gt; g.First()).ToList();</p>
<p>

Hope it helps..

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Author: Nishant Rana

I love working in and sharing everything about Microsoft.NET technology !

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