Render layers

GroupDocs.Viewer renders all layers of the CAD drawing by default. To render specific layers you can set the layers that you want to render by adding them into the CadOptions.Layers property of HtmlViewOptions (or PngViewOptions, or JpgViewOptions, orPdfViewOptions) class. 

The following code sample shows how to render a specific layer of a CAD drawing.

            using (Viewer viewer = new Viewer("sample.dwg"))
            {              
                HtmlViewOptions viewOptions = HtmlViewOptions.ForEmbeddedResources();
                viewOptions.CadOptions.Layers = new List<Layer>
                {
                    new Layer("TRIANGLE"), 
					new Layer("QUADRANT")
                };
                viewer.View(viewOptions);
            }

More resources

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online App

Along with full-featured .NET library we provide simple but powerful free Apps. You are welcome to view Word, PDF, Excel, PowerPoint documents with free to use online GroupDocs Viewer App.