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The Property Grid allows you to add, browse and edit collection properties.
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Note
The code sample below illustrates how to add a new objects to collections using CollectionDefinition.NewItemInitializer property. To use this code sample in your project, reference the DevExpresss.Xpf.Grid and DevExpress.Xpf.Grid.Core assembly.
The PropertyGrid control allows you to use the collection editor to add new objects to collections and dictionaries. Refer to the following example for more information:
View Example: How to: Add an Item to a Collection or a Dictionary