# GetLastAPIError Method - neoVI API

This method returns the error generated by the last API call.

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```cpp
int _stdcall icsneoGetLastAPIError(void * hObject, int *piErrorNumber);
```

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```vbnet
Public Declare Function icsneoGetLastAPIError Lib “icsneo40.dll” (ByVal hObject As IntPtr, ByRef piErrorNumber As Integer) As Integer
```

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```csharp
[DllImport(“icsneo40.dll”)] public static extern int icsneoGetLastAPIError(IntPtr hObject, ref int piErrorNumber);
```

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**Parameters**

hObject

\[in] Specifies the driver object created by [OpenNeoDevice](https://docs.intrepidcs.com/neovi-api/win32-api-overview-intrepidcs-api/basic-functions-overview-intrepidcs-api/openneodevice-method-intrepidcs-api).

piErrorNumber

\[out] The value of the error generated by the previous API call will be returned. The text description of the error can then be obtained by calling [GetErrorInfo](https://docs.intrepidcs.com/neovi-api/win32-api-overview-intrepidcs-api/error-functions-overview-intrepidcs-api/geterrorinfo-method-intrepidcs-api).

**Return Values**

If an error was generated and stored during the last API call then 1 will be returned. 0 will be returned if no error was generated since the port was opened or the last time that [GetLastAPIError](https://docs.intrepidcs.com/neovi-api/win32-api-overview-intrepidcs-api/error-functions-overview-intrepidcs-api/getlastapierror-method-intrepidcs-api) was called. The stored error will be cleared after this call. API errors are generated and stored on a ‘per-thread’ basis. The calling thread will only receive errors generated within it’s own context. If a new API error is generated before the previous error has been retrieved, the previous error will be lost. All errors generated can still be retrieved using [GetErrorMessages](https://docs.intrepidcs.com/neovi-api/win32-api-overview-intrepidcs-api/error-functions-overview-intrepidcs-api/geterrormessages-method-intrepidcs-api). However, [GetErrorMessages](https://docs.intrepidcs.com/neovi-api/win32-api-overview-intrepidcs-api/error-functions-overview-intrepidcs-api/geterrormessages-method-intrepidcs-api) will return errors generated in all threads, not just the current thread.

**Remarks**

### Examples

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{% tab title="C# Example:" %}

```
```

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{% tab title="Visual Basic .NET Example:" %}

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```

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