# TryAdd(T)

> Adds a new value. If the item is already present, this method returns false without replacing said item.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Collections.LowLevel.Unsafe](/engine/6000.7/script-reference/unity/collections/lowlevel/unsafe.md)
* **Assembly:** UnityEngine.ManagedKernelModule

```csharp
public bool TryAdd(T item)
```

### Parameters

**** (T): The value to add.

### Returns

| Type                                                          | Description                               |
| ------------------------------------------------------------- | ----------------------------------------- |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the value is not already present. |