> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IsValid Method of the AuthorInfo Object

This method checks whether the specified author information is valid. The information is considered valid if the nickname or the first and last name are specified.

## Syntax

### C++

```cpp theme={null}
HRESULT IsValid( VARIANT_BOOL* Result );
```

### C\#

```csharp theme={null}
bool IsValid();
```

### Visual Basic .NET

```vb theme={null}
Function IsValid() As Boolean
```

## Parameters

Result

\[out, retval] Receives the result of validation. This parameter is TRUE if the information of the author is valid.

## Return values

This method has no specific return values. It returns the [standard return codes of ABBYY FineReader Engine functions](/fine-reader/engine/api-reference/return-codes).

## See also

[AuthorInfo](/fine-reader/engine/api-reference/document-related-objects/authorinfo)