how to delete object b, after setting object a to it, but not remove object a aswell?

Question

I'm trying to do this:

   Data4JS D4JS = (Data4JS)GlobalHelper.GetCurrentSession()["Data4JS"];
    GlobalHelper.GetCurrentSession()["Data4JS"] = null; 
    return D4JS;

Problem is it sets D4JS to null as well, I don't really want to split my code up into a few method calls, how else can I acheive this easily?

You need to clone object. try to search about objects cloning/copying. — Renatas M., Aug 14 '12 at 09:09
If `D4JS` is not null after the first line, there's no reason it should be null after the second line. Go and try it with any associative collection (`Dictionary` for example). Something else happens then and your snippet is missing these important details. My advice is that you debug this twice, figure out what happens and edit your question. — Wiktor Zychla, Aug 14 '12 at 09:12

score 2 · Answer 1 · edited May 23 '17 at 11:48

2

just use the new keyword so you wont use a reference, or clone object method.

Deep cloning objects

edited May 23 '17 at 11:48

Community

1
1

answered Aug 14 '12 at 09:06

Freeman

5,691
3
29
41

How do I do the new bit? That's nto working for me,... Data4JS D4JS = new Data4JS(); D4JS = (Data4JS)GlobalHelper.GetCurrentSession()["Data4JS"]; – William Sando Aug 14 '12 at 09:53
Monkieboy gave a pretty good ideea of how to make a new object, but as i said you can use clone for a cleaner approach. – Freeman Aug 14 '12 at 10:08

score 0 · Answer 2 · answered Aug 14 '12 at 09:08

0

In that case do a deep copy using serialization.

answered Aug 14 '12 at 09:08

Nikhil Agrawal

47,018
22
121
208

score 0 · Answer 3 · answered Aug 14 '12 at 09:40

Assuming your object is simple enough and has public properties and all you need are the values in the property you could do something similar to this:

Data4JS D4JS = (Data4JS)GlobalHelper.GetCurrentSession()["Data4JS"];
Data4JS result = new Data4JS
{
    //Set your result object to the one in 
    //session by manually copying over the property values
    Property1 = D4JS.Property1;
};

GlobalHelper.GetCurrentSession()["Data4JS"] = null; 

return result;

Otherwise use what Freeman has suggested as a cleaner way of achieving what you need.

how to delete object b, after setting object a to it, but not remove object a aswell?

3 Answers3