How to Free memory after a form is closed (C# Win Forms)

Sameer Adhwaryu

Hello,

I am building a Kiosk type of application where the user Navigates using Next and Previous buttons. Many child forms (form objects) are created everytime the user presses Next/Previous buttons. Before opening another form, I close / dispose the present form. I am also calling the GC.collect() method. But the RAM usage keeps on increasing.

As the application runs 24x7, over a period of time the application becomes sluggish. At the start of the application it consumes around 20MB, but within 24 hrs, the RAM usage shoots up to 300 MB.

Note : The forms are opened using ShowDialog method.

What is the best way to resolve these issues ??

Thanks

3 Replies

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Rajanikant Hawaldar5y ago
Agree with @Amit Gupta and @Sachin Singh, Don't forget to unsubscribe if you are a short lived object subscribing to an event from a long lived object. Please refer below article for more information.

https://www.c-sharpcorner.com/UploadFile/4a7230/weak-event-pattern-and-memory-leak-in-net-4-5/
Amit Gupta5y ago
If you are using unmanaged resources then dispose them manually or try surrounding with using keyword. And use both GC.Collect(); GC.WaitForPendingFinalizers();
Sachin Singh5y ago
if you'll call GC.Collect() two three times it will work , but i don't think it is an optimized solution.