Aspose.Diagram is a class library for working with MS Visio files and is a pure .NET alternate for MS Visio Object Model. It enables developers to work with VSD and VDX files on ASP.NET web applications, web services and Windows applications. It makes use of the advanced functionality of Visio's services to manipulate Visio docs on a server. Developer can open files and manipulate the elements of the diagram, from lines and fills, to more complex elements, and then export to native Visio formats or XML. Aspose.Diagrams is aimed at developers who need to work with Visio files form within their own applications. It allows you to manipulate the file format quickly and easily, saving time and effort in developing a solution for working with these files.