C # - using a copy of variables stored in a session instead of a link

Question

I have asp: ImageButton with OnClick = "Btn_OnClick".
In Btn_OnClick, I have this line:

DataTable dtTable = (DataTable)Session["someSessionKey"]

and dtTable changes in function.

I noticed that if the button is pressed more than once, the dtTable that I take from the session contains a modified table, maybe the dtTable value is not a copy, but a reference to the session variable.

How can I change the copy of the session ["someSessionKey"] and not the actual value?
Thank!

Answer 1

DataTable dtTable = ((DataTable)Session["someSessionKey"]).Copy();

Answer 2

ICloneable, var myCopy = mySessionObject.Clone();. , , .

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, MemberwiseClone(), System.Object, . , , .

List<T> IEnumerable<T>, var myCopiedList = new List<T>(myListInSession);. , . foreach . DataTable. , .

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, , . Google : # Object clone wars.