i'll add my test's code example to clarify the test i'm running:

 public class Test : UserControl
    {

        public Test()
        {
            Debug.WriteLine("Creating control");
            this.Controls.Add(new UltraTextEditor());
            //this.Controls.Add(new TextBox());
        }
        ~Test()
        {
            Debug.WriteLine("Test destructor called on user control");
        }
    }
    static class Program
    {
        private static void CreateTest()
        {
            Test test = new Test();
            GC.Collect(); //request GC cycle
        }
     
        [STAThread]
        static void Main()
        {
            for (int i=0; i<10; i++)
                CreateTest();

            Debug.WriteLine("Leaving test");
        }
    }

this test outputs:

Creating control
Creating control
Creating control
Creating control
Creating control
Creating control
Creating control
Creating control
Creating control
Creating control
Leaving test

if we comment out the infragistics control and uncomment the TextBox we get:

Creating control
Creating control
Creating control
Test destructor called on user control
Test destructor called on user control
Creating control
Test destructor called on user control
Creating control
Test destructor called on user control
Creating control
Test destructor called on user control
Creating control
Test destructor called on user control
Creating control
Test destructor called on user control
Creating control
Test destructor called on user control
Creating control
Leaving test

-Yossi 

Hi Jasun,

No, there's no way to turn off the theme change hook.

That sounds like something Developer Support needs to look into. Have you submitted this to them?

Thanks for your quick response, Mike,

In my test app, the ultrabutton control has been added to the form's controls collection and does not get garbage collected after the form is closed.  Our memory profiling tool indicates that the ThemeChangedDelegate is preventing it from being collected.  

This problem only seems to arise when there is an UltraTabbedMdiManager present in the project- at least from my initial testing.  It seems to also to be affected by the UseOSThemes property of the controls.   the a global setting i can use to disable the theme delegate?

Hi Jason,

jasunbrown said:

We're having the same issue.  i created a stand alone app that demonstrates the flaw perfectly.  The idea of having to explicitly dispose of all of our infragistcs ui controls is insane in a managed environment.  Many of our controls are placed on the forms at runtime- so doing this would require code changes to maintain handles to these controls...

You really have to dispose of every control. This is not specific to Infragistics. Every control you place on a form is disposed by the form. As long as you add the control to the form's Controls collection, the form will take care of disposing it for you. You can look at the OnDispose method of the form and see the code that does this.

We're having the same issue.  i created a stand alone app that demonstrates the flaw perfectly.  The idea of having to explicitly dispose of all of our infragistcs ui controls is insane in a managed environment.  Many of our controls are placed on the forms at runtime- so doing this would require code changes to maintain handles to these controls...

has any progress been made on this issue?  please let me know if there is a simple infragistics-suggested work around.  I am using v9.2. (previously, we were using v7.3, which had the same issue)

Thanks in advance

jason

Just saw your answer. Sorry about that.

I'll try it out my self :)