Correct way to dispose of the Crystal Viewer

Question

Hello
i have noticed that the Viewer is not cleaning itself up correct when you close a form, i have also been able to replicate the issue within the following code:
Public Class Form1
    Private _crystalReportsControl As CrystalDecisions.Windows.Forms.CrystalReportViewer
    Private Sub ButtonCreate_Click(sender As System.Object, e As System.EventArgs) Handles ButtonCreate.Click
        _crystalReportsControl = New CrystalDecisions.Windows.Forms.CrystalReportViewer
        _crystalReportsControl.Dock = DockStyle.Fill
        Panel1.Controls.Add(_crystalReportsControl)
    End Sub
    Private Sub ButtonDispose_Click(sender As System.Object, e As System.EventArgs) Handles ButtonDispose.Click
        Panel1.Controls.Remove(_crystalReportsControl)
        _crystalReportsControl.Dispose()
        _crystalReportsControl = Nothing
    End Sub
End Class
-- i would of used a code block however you seem to be missing one for VB
now what i would expect to happen is when the dispose button is clicked the memory usage to drop back down to what it was. now of course this wont get cleared up straight away down to the Garbage Collector deciding when it runs. however after awhile we do expect to see a drop. i have created and then disposed of the control 40 times which should cause the Garbage collector enough time to at least make some difference however the memory just keeps climbing.
now it doesn't climb the full amount each time. for example on the first load of the viewer it loads about 10MB, after that it loads a few hundred kb and clears away 8
Current Set-Up Visual Studio 2010 - CR 13.0.2000.0

Answer 1

See if adding CrystalReportViewer.Dispose() will help.
- Ludek
Senior Support Engineer AGS Product Support, Global Support Center Canada
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