Memory leaks in a Windows Forms application

user_77674 0
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We are developing a big .NET Windows Forms application. We are facing a memory leak/usage problem in that despite we are disposing the forms.

The scenario is like:

  1. Our application is using 60 KB of memory with a list of records displaying in a grid.
  2. When the user clicks on a record it opens a form, myform.showDialog, show the details. The memory jumps from 60 KB to 105 MB.
  3. Now we close the form myform to get back to grid, and dispose that form and set it to null. Memory remains at 105 MB.
  4. Now if we again perform step 2, it would jump from 105 MB to 150 MB and so on.

How can we free up the memory when we close myForm?

We have already tried GC.Collect(), etc., but without any result.

memory-leaks c#-3.0 winforms .net c#
8 Answers

I recently had a similar issue where a running timer kept the form in memory, even though the form was closed. The solution was to stop the timer before closing the form.

user_3719170
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