---
title: Do not throw exceptions in special methods
description: Datadog, the leading service for cloud-scale monitoring.
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  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > Do not throw exceptions in special methods
---

# Do not throw exceptions in special methods

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## Metadata{% #metadata %}

**ID:** `csharp-best-practices/no-exception-special-methods`

**Language:** C#

**Severity:** Warning

**Category:** Error Prone

## Description{% #description %}

Do not throw exceptions in special methods such as `ToString()`, `Dispose()` or `GetHashCode`.

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```csharp
class MyClass {
    public override string GetHashCode()
    {
        if (something)
        {
            throw new Exception();
        }
        throw new Exception();
    }
}
```

```csharp
class MyClass {
    public override string ToString()
    {
        if (something)
        {
            throw new Exception();
        }
        throw new Exception();
    }
}
```

## Compliant Code Examples{% #compliant-code-examples %}

```csharp
class MyClass {
    // Safe: no exceptions thrown in special methods
    public override string ToString()
    {
        return "MyClass instance";
    }

    public override int GetHashCode()
    {
        return base.GetHashCode();
    }
}
```
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