# Suggestions

## Overview

When using Ucommerce, you can create a custom index definition that specifies which fixed or user-defined properties on your products should trigger suggestions. This will help to make suggestions that will show up as the customer is typing in a search field.

## Enabling suggestions

When you want to enable suggestions for a field, your index definition needs to define the field to be part of the index as well as tell the system that this field should be suggestable.

```csharp
this.Field(p => p["DisplayName"], typeof(string))
    .Suggestable();
```

{% hint style="info" %}
To use suggestions, you must call `ToSuggestions()` in the search API. See [Suggestions](/readme/search-and-indexing/searching.md#suggestions) for details.
{% endhint %}


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