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    <p>I can't explain all that is going on because I only went deep enough to make it work for one specific instance, but...</p> <p>Given a property in a class, one that you wish to display as a drop-down:</p> <pre><code>private String _groupHeader = null; [Category("Display")] [DisplayName("Group Header")] [Description("Any adjacent columns sharing this text will be displayed together as a merged header.")] [DefaultValue("")] [TypeConverter(typeof(GroupHeaderTypeConverter))] public String GroupHeader { get { return _groupHeader; } set { _groupHeader = value; } } </code></pre> <p>You then need a <code>StringConverter</code>:</p> <pre><code>public class GroupHeaderTypeConverter : StringConverter { private static List&lt;String&gt; groupHeaderList = new List&lt;String&gt;(); public override Boolean GetStandardValuesSupported(ITypeDescriptorContext context) { return true; } public override Boolean GetStandardValuesExclusive(ITypeDescriptorContext context) { return false; } public override TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) { return new StandardValuesCollection(groupHeaderList); } public static void SetList(List&lt;String&gt; newList) { groupHeaderList = newList; } } </code></pre> <p>Then, at some point in your code, you have to set the list:</p> <pre><code>private List&lt;String&gt; _groupHeaders = new List&lt;String&gt;(); //add to _groupHeaders GroupHeaderTypeConverter.SetList(_groupHeaders); </code></pre> <p>In my case, I was loading the <code>_groupHeaders</code> list as I was pulling data in from the database.</p> <p>I'm afraid that's as far as I can go...<code>TypeDescriptor</code> is not really my strong suit, but I hope this helps.</p>
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    1. POHow can you force the PropertyGrid to always show the drop-down button?
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    1. USDonBoitnott
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Guidance
A row detail

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.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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