Convert VSD or VSDX Diagram to VDX Programmatically in C# .NET

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VSD to VDX.cs

// Call the diagram constructor to load diagram from a VSD file
Diagram diagram = new Diagram("VSDtoVDX.vsd");

// Convert VSD to VDX
diagram.Save("VSDToVDX_out.vdx", SaveFileFormat.Vdx);

VSDX to VDX.cs

// Call the diagram constructor to load diagram from a VSDX file
Diagram diagram = new Diagram("VSDXtoVDX.vsdx");

// Convert VSDX to VDX
diagram.Save("VSDXToVDX_out.vdx", SaveFileFormat.Vdx);