How to clear memory after a form is disposed C#

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.NET2.0

Hi,
I am having two forms mentioned below.

1.frmNewMain
2.frmDetailReferrals

Here
Form #1 is the static form which is always opened.
Form #2 is a modal form which is opened via ShowDialog Method.

Form #1 creates instance for Form #2

C#

 frmDetailReferrals frmDetail = 
                    new frmDetailReferrals(this, LastOpenedCaseID, "Medication");

 frmDetail.ShowDialog();

GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();

Initially 23 MB for Form #1
After Second Form 50 MB

How to remove all memory resources other than Form #1

Thanks in advance

Posted 5-Aug-15 23:26pm

KUMAR619

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Joan Magnet 6-Aug-15 5:48am

frmDetail.Dispose()

https://msdn.microsoft.com/en-us/library/aw58wzka(v=vs.110).aspx

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OriginalGriff · Answer 1 · 2015-08-05T23:43:00

Solution 1

You can't. You have no control over the memory allocation: once it's allocated to the framework for your application, you can't force anything to release it.
ANd your code doesn't even Dispose the second form: there is a still a reference to it, so the Garbage Collector will not do anything with it.

You should not be trying to force the GC anyway: why do you want to do this? It's not at all normal...

Posted 5-Aug-15 23:43pm

OriginalGriff

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KUMAR619 7-Aug-15 2:42am

Then how to solve this kind of problem.

OriginalGriff 7-Aug-15 3:06am

What problem?
When the GC runs out of memory, it will release the resources that are currently unused.

You can manually Dispose the second firm, and you can write a Dispose override which releases any resources you have added within the form - but under normal circumstances that isn't necessary. What are you doing that you think you need this?

KUMAR619 7-Aug-15 5:28am

Can I get a sample code for this.

OriginalGriff 7-Aug-15 5:58am

For what? :laugh:
Have a look at Dispose and IDisposable on MSDN: they should have instructions and examples.

KUMAR619 9-Aug-15 0:28am

I found a solution which works fine.
I've posted in solution 2.
Please review and share your comments.