Sample code for 3MF To USDZ C# conversion. Use API example code for batch 3MF files To USDZ conversion within VB.NET, Asp.NET or any .NET based application....Sample code for 3MF to USDZ C# conversion. Use API example code for batch 3MF files to USDZ conversion within VB.NET, Asp.NET or any .NET based application.