Dictionary of type dictinary clearing problem

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Hi
I am using dictionary of type dictinary. and i am reading in loop some data.
first time when i fill dictianry 1 and dictianry 2 all is fine.
next i have to change data in the dictianry and add it to dictianry 1.
for this I am clearing dictianry 2.

and when i do this operation the previous data also get changed.

As dictianry is of reference type.

I need work around for this.

Anyone ahve any idea?

Posted 15-Mar-12 3:13am

snehalgb

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BobJanova 15-Mar-12 9:19am

Not clear. You can clear a dictionary (i.e. remove all items) using Dictionary.Clear().

Sergey Alexandrovich Kryukov 15-Mar-12 22:51pm

Dictionary of dictionary... do you mean one dictionary type is a key or a value in other dictionary? No, not clear. At least show your type in code.

And please explain why.
--SA

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E.F. Nijboer · Answer 1 · 2012-03-15T03:30:00

Solution 1

You need to do a deep copy. Have a look at the following links for more info:
http://msdn.microsoft.com/en-us/library/system.object.memberwiseclone.aspx[^]

Deep copy of objects in C#[^]

Good luck!

Posted 15-Mar-12 3:30am

E.F. Nijboer

#realJSOP · Answer 2 · 2012-03-15T03:31:00

Solution 2

It's due to the way you're copying the data. You're essentially adding an additional reference to the same object, so when you change it in one dictionary, it also changes in the other.

Posted 15-Mar-12 3:31am

#realJSOP

v2