I Have List<PropertyDetails> OriginalList which I clone it to another list by : List<PropretyDetails> CopiedList = OriginalList.ToList();
Now I pass the CopiedList to some method that alters it.
Myproblem is the alterations are reflected to the OriginalList
A reference type is really a pointer to an object. And because PropertyDetails is also a reference type, copying the list just gives you a new list of pointers that point to the original objects. As Habbib pointed out, you'll have to create copies of the objects in the list, and build a new list that contains these copies.
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