# Sandbox.SandboxSystemExtensions.ToLong

```csharp
static long ToLong(string str, long Default = 0)
```

Convert to `T:System.Int64`, if not then return `Default`.

### Parameters

- `str` (`string`)
- `Default` (`long`), default `0`

### Returns

`long`

Declared in [Sandbox.SandboxSystemExtensions](/api/Sandbox.SandboxSystemExtensions).
Assembly: `Sandbox.System`.