Conveniently Remove a List of Items From Another List

Say you have two lists. You want to remove the items from the first list that already exist in a second list:

Dim listFirst As List(Of String) = New List(Of String)
Dim listSecond As List(Of String) = New List(Of String)

listFirst.Add("A")
listFirst.Add("B")
listFirst.Add("C")
listFirst.Add("D")
listFirst.Add("E")
listFirst.Add("F")

listSecond.Add("A")
listSecond.Add("D")
listSecond.Add("F")

Dim different As IEnumerable(Of String) = listFirst.Except(listSecond)
listFirst = different.ToList()

Result:

B
C
E

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Abdul Quader Mamun

Founder
Bangladesh

I have been developing software/web application since 2002 mainly on Microsoft technologies. I am a MCSD and MCTS. I have developed a wide range of Web, Desktop and Mobile applications.

I am vast experience with Telerik technologies.

I am also experience with other technologies.

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