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How to convert DWG to PNG with zoom extension (C# .NET)

With asp.net during the convert file, i want to do a zoom of particular layer before save the image file


Can you please share the details of your requirements with us. I also like to share that Aspose.CAD does allow you to render the particular area of layer to PDF or image. You may please refer to following example for your convenience.

CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions();
rasterizationOptions.Layouts = new string[] { "Model" };
rasterizationOptions.NoScaling = true;

// note: preserving some empty borders around part of image is the responsibility of customer
// top left point of region to draw
Point topLeft = new Point(6156, 7053);
double width = 3108;
double height = 2489;

CadVportTableObject newView = new CadVportTableObject();
newView.Name = new CadStringParameter();
newView.CenterPoint.X = topLeft.X + width / 2f;
newView.CenterPoint.Y = topLeft.Y - height / 2f;
newView.ViewHeight.Value = height;
newView.ViewAspectRatio.Value = width / height;

for (int i = 0; i < cadImage.ViewPorts.Count; i++)
CadVportTableObject currentView = (CadVportTableObject)(cadImage.ViewPorts[i]);
if (cadImage.ViewPorts.Count == 1 || string.Equals(currentView.Name.Value.ToLowerInvariant(), "*active"))
cadImage.ViewPorts[i] = newView;