問題描述
根據用戶控件的大小調整面板的大小 (Resizing a Panels based on the size of user control)
I'm trying to find a way to resize a LayoutPanel (DevExpress) based on the size of the user control that it contains. The user control is exposed using a ContentControl. Here's the relevant Code This is the Layout panel and the coresponding view:
<dxd:LayoutPanel Caption="Search Criteria" CaptionImage="Images/Icons/DetailView.png">
<ContentControl Name="myContentControl" Content="{Binding Path=ProjectsSearchVM}"/>
</dxd:LayoutPanel>
The ProjectSearchVM is a property of the MainWindowViewModel, which is the DataContext for the code above. This property returns an object of type ProjectsSearchViewModel that is replaced by its corresponding View (containing a userControl) using a Resource File:
<DataTemplate DataType="{x:Type vm:ProjectSearchViewModel}">
<vw:ProjectSearchView />
</DataTemplate>
The problem is that my view is higher than the original size of the Layout Pannel. I'd like to bind the panel's MinSize to the size of my view (or the ContentControl containing it).
I tried this, but it doesn't work:
<dxd:LayoutPanel Caption="Search Criteria" CaptionImage="Images/Icons/DetailView.png">
<dxd:LayoutPanel.MinSize>
<Binding ElementName="myContentControl" Path="Size"/>
</dxd:LayoutPanel.MinSize>
<ContentControl Name="myContentControl" Content="{Binding Path=ProjectsSearchVM}" />
</dxd:LayoutPanel>
I'm still very new to WPF, so I'm sure the solution is simple. Can anyone enlighten me?
參考解法
方法 1:
The question was answered on the DevExpress site at this link:
http://www.devexpress.com/Support/Center/Question/Details/Q448884
For flyout, it involves overriding the control in the container, for example, if it's in a Border, something like this:
public class AutoSizeContainer : Border {
protected override void OnInitialized(EventArgs e) {
base.OnInitialized(e);
BaseLayoutItem item = DockLayoutManager.GetLayoutItem(this);
Child.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
AutoHideGroup.SetAutoHideSize(item, new Size(Child.DesiredSize.Width + 6, Child.DesiredSize.Height + 6));
}
}
Making such an object the root object of the LayoutPanel in an AutoHide group, makes the flyout sizing correct.
(by Lukasz、Rob Perkins)