To deep copy a IList in C# and VB.NET you can use the snippet.

Sample C#

public static IList<T> Clone<T>(IList<T> listToClone) where T : ICloneable
	return listToClone.Select(item => (T)item.Clone()).ToList();

Sample VB.NET

Public Shared Function Clone(Of T As ICloneable)(listToClone As IList(Of T)) As IList(Of T)
	Return listToClone.[Select](Function(item) DirectCast(item.Clone(), T)).ToList()
End Function

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