Question: I am creating panels in code in this way:

```
DockableContent dockableContent = CreateDockableContent<TView>(model);
dockableContent.Show(_dockingManager, AnchorStyle.Bottom);

```

How can I specify the initial height for that panel? The following doesn't work:

```
dockableContent.Height = 400;

```

or

```
ResizingPanel.SetResizeHeight(dockableContent, new GridLength(400));

```

Answer: 
For the panel with fixed height set DockMinHeight="120" and DockHeight="1\*". For other panel set DockHeight="90\*".

In this case, panel with fixed height will become so short, that DockMinHeight will be used.
For Avalon Dock 2.0 there is some internal code that will automatically resize the DockWidth / DockHeight to star-size. Which stops you from having a fixed/initial height/width panel in a vertical / horizontal group pane. 

The only fix at the moment I can see is to comment out this behavour from the AvalonDock Source code. Namely; in `OnFixChildrenDockLengths` of class `LayoutAnchorablePaneGroupControl`

Hope this helps.