C# .NET Visio Diagram API for creating, editing, and processing VSD, VSX, VTX, VSDX, and other Visio files. Convert diagrams to PDF, PNG & HTML formats.... VTX, VDX, VSX, VSSX, VTSX, VSDM, and VSSM. You can quickly and...your VSD, VSDX, VSX, VTX, VDX, VSDM, and other diagram files to...