C#

/// <summary>
/// Deletes the container.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
/// <exception cref="System.NotImplementedException">Something went terribly wrong</exception>

private void DeleteContainer(object sender, EventArgs e)
{
    DockContainerItem _tmp = (DockContainerItem)_currentClickedBar.Items[0];
    PanelDockContainer _tmpPanel = (PanelDockContainer)_tmp.Control;
    if (_tmpPanel.Controls.Count != 0)
    {
        ... // Codeblock that is unfinished and not relevant
    }
    else
    {
        //Wenn der Container leer ist kann er einfach gelöscht werden
        _dockingPanels.Remove(_dockingPanels.Find(dp => dp.Name == _tmpPanel.Name));
        _dockingContainers.Remove(_dockingContainers.Find(dc => dc.Name == _tmp.Name));
        _barContainer.Remove(_barContainer.Find(bc => bc.Name == _currentClickedBar.Name));
        //My workaround
        DockSite _ds = (DockSite)_currentClickedBar.DockedSite;
        int _width = _currentClickedBar.Size.Width;
        int _height = _currentClickedBar.Size.Height;
        //delete the Container
        dotNetBarManager1.Bars.Remove(_currentClickedBar);
        //resize the DockSite
        _ds.Size = new System.Drawing.Size(_ds.Size.Width + _width, _ds.Size.Height + _height);
        _currentClickedBar = null;
        //System.GC.Collect();
    }
}

/// <summary>
/// Creates the named docking container.
/// </summary>
/// <param name="NameContainer">The name container.</param>
/// <param name="NameBar">The name bar.</param>
/// <param name="NamePanel">The name panel.</param>

public void CreateNamedDockingContainer(string NameContainer, string NameBar, string NamePanel)
{
    // Create the new Bar and set the specific Settings
    Bar newBar = new Bar("neuer Container");
    newBar.Name = NameBar;
    newBar.LayoutType = eLayoutType.DockContainer;
    newBar.GrabHandleStyle = eGrabHandleStyle.Caption;
    newBar.Stretch = true;
    newBar.CanCustomize = false;
    newBar.CanAutoHide = false;
    newBar.MouseClick += bar_Click;
    newBar.BarUndock += barContainer_BarUndock;
    _barContainer.Add(newBar);

    //Create the dockContainerItem
    DockContainerItem tempDock = new DockContainerItem();
    tempDock.Name = NameContainer;
    _dockingContainers.Add(tempDock);

    //Create the dockingPanel
    PanelDockContainer tempPanel = new PanelDockContainer();
    tempPanel.Name = NamePanel;
    _dockingPanels.Add(tempPanel);
    tempPanel.MouseClick += panelDockContainer_Click;

    //Create a new Control for the ContainerItem and reset it to the panel
    tempDock.Control = new Control();
    tempDock.Control = tempPanel;

    //add the dockContainer to the bar, the bar to the dotNetBarManager and set the dockposition
    newBar.Items.Add(tempDock);
    dotNetBarManager1.Bars.Add(newBar);
    dotNetBarManager1.LeftDockSite.GetDocumentUIManager().Dock(newBar);
}

// After successful connection Northwind
    // Create an empty report.
    XtraReport1 report = new XtraReport1();    string sql = "select * from Customers";
    DataSet ds = new DataSet();
    SqlDataAdapter da = new SqlDataAdapter(sql, cnn);
    da.Fill(ds);            
    report.DataSource = ds;
    report.DataAdapter = da; 
    report.DataMember = Customers; // Table Customers of Northwind

    report.ShowPreview();