Hi Georgi,

Thanks for looking in to this issue.

I reproduced this issue in the sample app infragistics provided when you install the software. I have added the sample project. I have upgraded the project to run in VS2010. Please take a look.

I am using a UltraTilePanel programmatically and docking it. See the code snippet below for adding the UltraTilePanel,

  private void addDockPanelMenuItem_Click(object sender, EventArgs e)
        {
            UltraTilePanel tp = new UltraTilePanel();
            tp.TileSettings.ShowCloseButton = DefaultableBoolean.True;
            tp.Appearance.BackColor = Color.Transparent;
            tp.Text = "Test TilePanel";
            tp.Tag = Guid.NewGuid().ToString();
            System.Diagnostics.Trace.WriteLine(tp.Tag.ToString());

            DockableControlPane dockcp = new DockableControlPane(tp);
            dockcp.Size = new Size(210, 210);
            dockcp.Settings.Appearance.BackColor = Color.Transparent;
            dockcp.Text = "Test Control Pane";

            DockAreaPane flpane = ultraDockManager1.DockAreas.Add(DockedLocation.DockedLeft);
            flpane.Panes.Add(dockcp);
            flpane.Closed = false;
            flpane.Size = new System.Drawing.Size(264, 583);
            flpane.Settings.Appearance.BackColor = Color.Transparent;

        }

I remove the UltraTilePanel when the user closes the dockcontrolpane. See the code snippet below,

        private void ultraDockManager1_PaneHidden(object sender, PaneHiddenEventArgs e)
        {
            UltraTilePanel tp = e.Pane.Control as UltraTilePanel;

            if (tp != null)
            {
                this.LogPaneEvent("[PaneHidden]", e.Pane);
                System.Diagnostics.Trace.WriteLine(tp.Tag.ToString());
                ultraDockManager1.ControlPanes.Remove(tp);
                tp.Dispose();
                tp = null;
            }
        }

To reproduce the issue, remove the following 2 lines from the paneHidden method,

                tp.Dispose();
                tp = null;

Now when you close the dockcontrolpane, You will see a dark Panel on the left top. What it says to me is, when I remove the control from the dock control pane, it doesn't actually remove, I have to explicitly call the Dispose() and set it to null to remove it completely.

Guess that solves my problem but I hoped it worked nicely since I was using Infragistics toolset.

Regards,

-Suvinay

Hello Suvinay,

Have you been able to resolve your issue ? Did you have a time to take a look at the attached sample.

Let me know if you have any further questions.

Regards

Hi Georgi,

Your modification to t he code works well even if I don't do the manual removal of the control and disposing it off. The only issue I came across is that every time I add a new dock panel from the menu, I have to use a unique key otherwise it complains about the key already exists. That means the dockcontrolpane is not disposed but it is jut in a hidden state.

I guess for now I wil manually dispose off so that I can get rid of it completely. I guess you all have to add a property in the dockmanager so that if it is set to true, dockmanager disposes everything when we close instead of hiding it.

Thanks,

-Suvinay