Index was outside the bounds of the array while viewing dxf file

Aspose.CAD Product Family
1

Hi,

I am trying to view .dxf file using Aspose.CAD (V 23.1.0) and .net 4.7.1. I am able to read all the layer names from the uploaded dxf file. While adding LayerNames in the rasterizationOptions the code throws an error as follows ```
Index was outside the bounds of the array


I am using below code for the same and execution throws error at highlighted line.

        try
    					{
    					Aspose.CAD.Live.Demos.UI.Models.License.SetAsposeCADLicense();

    					
    						// Load an existing CAD document
    						Aspose.CAD.FileFormats.Cad.CadImage image = (Aspose.CAD.FileFormats.Cad.CadImage)Aspose.CAD.Image.Load(filename);

    						// Create an instance of CadRasterizationOptions
    						Aspose.CAD.ImageOptions.CadRasterizationOptions rasterizationOptions = new Aspose.CAD.ImageOptions.CadRasterizationOptions();

    						// Set image width & height
    						rasterizationOptions.PageWidth = 1024;
    						rasterizationOptions.PageHeight = 1024;
    						// Set the drawing to render at the center of image
    						//rasterizationOptions.CenterDrawing = true;
    						//rasterizationOptions.TypeOfEntities = Aspose.CAD.ImageOptions.TypeOfEntities.Entities3D;

    						rasterizationOptions.AutomaticLayoutsScaling = true;
    						rasterizationOptions.NoScaling = false;
    						rasterizationOptions.ContentAsBitmap = true;

    						// Set Graphics options
    						rasterizationOptions.GraphicsOptions.SmoothingMode = Aspose.CAD.SmoothingMode.HighQuality;
    						rasterizationOptions.GraphicsOptions.TextRenderingHint = Aspose.CAD.TextRenderingHint.AntiAliasGridFit;
    						rasterizationOptions.GraphicsOptions.InterpolationMode = Aspose.CAD.InterpolationMode.HighQualityBicubic;


    						// Get the layers in an instance of CadLayersDictionary
    						var layersList = image.Layers;
    						lstOutput.Add(layersList.Count.ToString());
    						i = 0;
    						// Iterate over the layers
    						foreach (var layerName in layersList.GetLayersNames())
    						{
    							if (i == currentPage)
    							{
    								// Add the layer name to the CadRasterizationOptions's layer list
    								**rasterizationOptions.Layers[i] = layerName;**

    								// Create an instance of PngOptions for the resultant image
    								Aspose.CAD.ImageOptions.JpegOptions options = new Aspose.CAD.ImageOptions.JpegOptions();

    								// Set rasterization options
    								options.VectorRasterizationOptions = rasterizationOptions;
    								image.Save(imagePath, options);
    								lstOutput.Add(imagePath);
    								image.Dispose();
    								break;
    							}
    							i++;
    						}
    						if (!image.Disposed)
    							image.Dispose();
    					
    				}
    				catch (Exception ex)
    				{
    					throw ex;
    				}
2

The exception occured at below line of code.

rasterizationOptions.Layers[i] = layerName;

3

@somnath.gujar,
I guess you need to initialize that array firstly, e.g.,
rasterizationOptions.Layers = new string[layersList.Count];