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POCreate a designer-aware UserControl collection to be used runtime
 

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    <p>I have a Panel I want to fill with some UserControl(s) at runtime. These controls are complex and may be interdependent, so I'd like them:</p> <ul> <li>to be editable with Visual Studio designer;</li> <li>to be in the same context (= defined in the same class);</li> </ul> <p>Both of the requirements are a must-have.</p> <p>Considering UserControl is itself an indexed collection of Control(s), I started designing my controls in the same class, without caring about real positioning of them (that will be specified runtime). I already used the same identical approach with DevComponents ribbon containers (with much satisfaction), so I initially thought the same was possible with standard UserControl(s).</p> <p>I eventually realized that a Control can be inside only one Control.ControlCollection instance at a time, so I couldn't use the Controls property and add controls to another panel without removing them from the original "dummy" UserControl.</p> <p>My question is: is there a clean and supported way to create this designer-aware UserControl collection? I would call this approach a pattern because it really adds code clearness and efficiency.</p> <p>Thanks, Francesco</p> <p>P.S.: as a workaround, I created a DummyControlContainer class that inherits UserControl and keeps a Dictionary map filled at ControlAdded event (code follows). Wondering if there's something cleaner.</p> <pre><code>public partial class DummyControlContainer : UserControl { private Dictionary&lt;string, Control&gt; _ControlMap; public DummyControlContainer() { InitializeComponent(); _ControlMap = new Dictionary&lt;string, Control&gt;(); this.ControlAdded += new ControlEventHandler(DummyControlCollection_ControlAdded); } void DummyControlCollection_ControlAdded(object sender, ControlEventArgs args) { _ControlMap.Add(args.Control.Name, args.Control); } public Control this[string name] { get { return _ControlMap[name]; } } } </code></pre>
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