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    <p>Instead, you can use <a href="http://msdn.microsoft.com/en-us/library/ms158145.aspx" rel="nofollow">BindingSource</a> to keep your objects synchronized.</p> <pre><code>// first binding source that points to your List of Foos BindingSource bindingSourceFoos = new BindingSource(); bindingSourceFoos.DataSource = foos; // create a second binding source that references the first's Bars property BindingSource bindingSourceBars = new BindingSource(bindingSourceFoos, "Bars"); // set DisplayMember to the property in class Foo you wish to display in your listbox fooListBox.DisplayMember = "FooName"; // my example, replace with actual name fooListBox.DataSource = bindingSourceFoos; // again, set DisplayMember to the property in Bar that you want to display in ListBox barListBox.DisplayMember = "BarInfo"; // my example, replace with actual name barListBox.DataSource = bindingSourceBars; </code></pre> <p>So, from this point on, when you click on something in the FooListBox, it will automatically change the contents of the BarListBox to that Foo's Bar collection.</p> <p>Update:</p> <p><a href="http://msdn.microsoft.com/en-us/library/ms233787.aspx" rel="nofollow">MSDN - Databinding to a user control</a></p> <p>That link should tell you everything you need to know, but just in case:</p> <p>Decorate your user control like this:</p> <pre><code>[System.ComponentModel.LookupBindingProperties ("DataSource", "DisplayMember", "ValueMember", "LookupMember")] public partial class FooSelector : UserControl, INotifyPropertyChanged </code></pre> <p>Add these members to your user control:</p> <pre><code> public object DataSource { get { return fooListBox.DataSource; } set { fooListBox.DataSource = value; } } public string DisplayMember { get { return fooListBox.DisplayMember; } set { fooListBox.DisplayMember = value; } } public string ValueMember { get { return fooListBox.ValueMember; } set { if ((value != null) &amp;&amp; (value != "")) fooListBox.ValueMember = value; } } public string LookupMember { get { if (fooListBox.SelectedValue != null) return fooListBox.SelectedValue.ToString(); else return ""; } set { if ((value != null) &amp;&amp; (value != "")) fooListBox.SelectedValue = value; } } </code></pre> <p>And then, just like in my original example, you're binding the same way as if you were binding to a normal listbox:</p> <pre><code>// fooSelector1 is your FooSelector user control fooSelector1.DisplayMember = "Name"; fooSelector1.DataSource = bindingSourceFoos; </code></pre>
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    1. POHow to link datasource to a value within another datasource?
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    1. COThanks for the edit. I actually noticed the problem right after posting my comment so I deleted it :) I confirm that it works perfectly. Unfortunately I might have over simplified the problem when making the question thinking that it would be easily transferable to my actual scenario. But I'm a bit stuck. I'll update my question in a bit to reflect the problem.
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    2. COOkay I've updated my question now.
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    3. CO@DavidGouveia, I've added a link. Code example to follow if you need more help.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

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