Hello,

In my application (VB.Net) I use the controls of the NetAdvantage Windows Forms with customized styles.

For that, I created new controls which inherits of the original controls of Infragistics.

In the case of Infragistics.Win.UltraWinToolbars.UltraToolbarsManager, when I disposed, the method "Infragistics.Win.UltraWinToolbars.Ribbon.get_Metrics()" still references the parent form, finished in a memory leak.

Here is the code I used for create the control:

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class InheritedToolbarsManager
   Inherits Infragistics.Win.UltraWinToolbars.UltraToolbarsManager

   <System.Diagnostics.DebuggerNonUserCode()> _
   Protected Overrides Sub Dispose(ByVal disposing As Boolean)
      Try
         If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
         End If
      Finally
         MyBase.Dispose(disposing)
      End Try
   End Sub

   Private components As System.ComponentModel.IContainer

   <System.Diagnostics.DebuggerStepThrough()> _
   Private Sub InitializeComponent()
      CType(Me, System.ComponentModel.ISupportInitialize).BeginInit()
      CType(Me, System.ComponentModel.ISupportInitialize).EndInit()
   End Sub

End Class

I use the .NET Memory Profiler for identification of Memory Leaks:

"This instance is disposed and still indirectly rooted by an EventHandler. This often indicates that the EventHandler has not been properly removed and is a common cause of memory leaks.

The instances below are directly rooted by EventHandler(s). Investigate them to get more information about this issue."

Infragistics.Win.UltraWinToolbars.Ribbon.get_Metrics()
Infragistics.Win.UltraWinToolbars.Ribbon.OnFormCaptionChanged()
Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.OnFormTextChanged( object,EventArgs )
Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.HookFormEvents()
Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.OnFormLoad( object,EventArgs )
System.Windows.Forms.Form.OnLoad( EventArgs )

You can me help discover what is wrong in the inheritance?

Thanks