# Getting an error message when "gvRenderData" method fails

**URL:** <https://forum.graphviz.org/t/getting-an-error-message-when-gvrenderdata-method-fails/2622>\
**Category:** Help\
**Created:** [December 20, 2024, 12:54am UTC](https://forum.graphviz.org/t/getting-an-error-message-when-gvrenderdata-method-fails/2622 "2024-12-20T00:54:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![PolarGoose](https://avatars.discourse-cdn.com/v4/letter/p/4491bb/32.png) [@PolarGoose](https://forum.graphviz.org/u/PolarGoose)\
**Post date:** [December 20, 2024, 12:54am UTC](https://forum.graphviz.org/t/getting-an-error-message-when-gvrenderdata-method-fails/2622/1 "2024-12-20T00:54:47Z")

</div>

I’m using GraphViz API to generate the graph from my C# code.  
If I provide a non-supported layout engine to the `gvRenderData`, it fails.  
I would like to get an error message the same way `aglasterr` works for the `agmemread` method.

Is it possible?