.NET Microsoft Visio File Processing APIs

Generate, Edit, Manipulate and Transform Microsoft Visio diagrams to XPS, HTML, SVG, SWF, XAML, images or PDF formats.

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Aspose.Diagram for .NET

Aspose.Diagram for .NET


Aspose.Diagram for .NET is a specialized API designed to work with Microsoft Visio files. It allows developers to create, manipulate & convert native Visio file formats. Developers can create diagrams from scratch as well as easily load existing files and manipulate the elements of the diagram to export the result in other formats.

Aspose.Diagram for .NET supports almost all native Visio file formats as well as some commonly used image & fixed-layout formats. This API is an alternative to the Microsoft Visio Object Model and provides better performance. It makes use of the advanced functionality of Visio Services to manipulate Visio documents on a server.


Advanced .NET Visio Files API Features



Read multiple Visio formats & specify fonts location.


Group multiple shapes


Configure Visio TimeLine shapes


Read properties of different objects of the diagram


Save diagrams as XML or XAML


Manipulate Visio document properties


Print Visio diagram on a server via XpsPrint API


Rotate a shape at any angle


Add comments to Visio drawings


Insert a new blank page into a Visio drawing


Print Visio diagrams with high fidelity


Specify reviewer for creating comments in Diagram


Detect and remove unused Themes, data graphics and styles


Extract shape data on the basis of Dependson formula


Get all Props value for a Shape


Add NUBRS line support when exporting a drawing


Support of drawing Polyline and Bezier shapes


Render comments when saving as image or HTML

Simple, Fast & Reliable Conversion of Visio Files

Companies generate technical diagrams in Microsoft Visio and would like to be able to share this information. The problem, however, is that the common users would not be able to load such visuals unless they have installed Microsoft Visio or some other tool that could load Visio specific file formats. One of the ways of solving this problem is converting Visio diagrams to universal formats such as PDF, HTML & raster images, which do not require special programs to be installed on the machine.

Aspose.Diagram for .NET has its own conversion engine, which works independently of any other software, and can convert any supported Visio file format to any of the supported format with just a few lines of code. The conversion process is quick yet reliable, offering you the high fidelity results regardless of the resultant file format.

Save diagram in different formats - C#

// load file to be converted
var diagram = new Aspose.Diagram.Diagram(dir + "template.vsdx");
// convert to other formats
diagram.Save(dir + "output.pdf", Aspose.Diagram.SaveFileFormat.PDF);
diagram.Save(dir + "output.html", Aspose.Diagram.SaveFileFormat.HTML);
diagram.Save(dir + "output.jpg", Aspose.Diagram.SaveFileFormat.JPEG);

Manipulate Microsoft Visio Diagrams

Aspose.Diagram for .NET API allows to read Microsoft Visio files in native VSD/VSDX format as well as other Visio formats including VSS, VST, VSX, VTX, VDW, VDX, VSSX, VSTX, VSDM, VSSM and VSTM. The contents of the diagram can be manipulated through the Aspose.Diagram API. After making the required changes to the Visio file, the file can then be written to disk in any of the supported formats.

Access Data from Visio Diagrams

Aspose.Diagram for .NET allows developers to easily read the data of the Visio diagram like Document Properties, Pages, Masters, Shapes, Images, Connects, Solution XML, Comments, Hyperlinks, StyleSheet, Layers, User-defined cells and so on.

Print Diagrams with Ease

Aspose.Diagram for .NET allows to print diagrams using different options, with just a few lines of code. You can choose to print with default settings, print to a specific printer or choose to print a range of pages.

Print diagrams on physical printer - C#

// load file to be printed
var diagram = new Aspose.Diagram.Diagram(dir + "template.vsdx");
// print to default printer
// print while specifying printer name & print job
diagram.Print("LaserJet1100", "Job Name");

Microsoft Office Automation – Not Needed

Aspose.Diagram for .NET is built using managed code that never needs Microsoft Office or Microsoft Visio to be installed on the machine to work with Visio files processing. It is a perfect Microsoft Office Visio automation alternative in terms of supported features, security, stability, scalability, speed and price.


Support and Learning Resources


Aspose.Diagram offers individual Diagramming APIs for other popular development environments as listed below: