---
title: Commerce Connect properties
slug: commerce-connect-14/docs/properties
docTags: 
createdAt: 2026-07-23T10:25:34.370Z
---

Properties store and present data for content, such as catalog content and blocks.

## Use a block as a property in catalog content

Blocks in Optimizely Commerce Connect can be used in code as a property, which reuses a set of properties in multiple instances. This topic describes how to add and render an existing block as a property in an existing catalog content type.

Blocks can only be rendered in the context of other content, such as catalog content. When a block is used as a property in a catalog content, it is stored, loaded, and versioned with that content.

### Add a block as a property

Here we assume existing catalog content "FabricProduct," to which you want to add an existing block type "FabricBlock". The block has a FabricName property of type String, and an Image property of type ContentReference. The product content, "FabricProduct," will have the block as a property, and we will update the corresponding view for the the product to display the block as a property.

**Example**: The Fabric block type.

```csharp
[ContentType(DisplayName = "FabricBlock", GUID = "119EE80A-525B-479D-A838-6B4E0A903147")]
public class FabricBlock : BlockData
{
  public virtual String FabricName {get; set;}
  public virtual ContentReference Image {get; set;} 
}
```

**Example**: The Fabric product.

```csharp
[CatalogContentType( GUID = "485DFA88-E6D3-4CEF-9257-4A6346C1EE29",
                    MetaClassName = "FabricProduct",
                    DisplayName = "Fabric product")]
public class FabricProduct : ProductContent
{
  public virtual FabricBlock FabricProductBlock { get; set; }
}
```

See also [Using a block as a Property](docId\:I2fS17khL3lHXVwk6LdKS) "Optimizely Content Management System Developer Guide").

## Generic PropertyList(PropertyList`<T>`)

**PropertyList** is a property that lets define an editable list of objects. The content model can implement a property of type IList`<T>`, where T is a class with property definitions.

### Example of PropertyList in catalog content

This example shows how to implement a list of customer contacts on a product. The list contains items with string and int properties. First, define the "CustomerContact" model class.

```csharp
public class CustomerContact
{
  public string Name { get; set; }
  public string Email {get; set; }
  public int Age { get; set; }
  public int PhoneNumber { get; set; }
}
```

Next, register the property definition. It uses a property class that sets the generic type to **Customer Contact** item class.

```csharp
[PropertyDefinitionTypePlugIn]
public class CustomerContactListProperty : PropertyList<CustomerContact>
{
}
```

Finally, add the list of customer contacts on the product.

```csharp
[CatalogContentType(MetaClassName = "NodeContentWithPropertyList")]
public class NodeContentWithPropertyList : NodeContent
{
  [BackingType(typeof(PropertyCustomerContactList))]
  [EditorDescriptor(EditorDescriptorType = typeof(CollectionEditorDescriptor<CustomerContact>))]
  public virtual IList<CustomerContact> CustomerContactList { get; set; }
}
```