How to Convert Visio to SVG in C#

How to Convert Visio to SVG in C#

Visio diagrams help draw complex business flowcharts. You can use any diagramming software to create network diagrams with symbols and templates. However, you often need to convert VSD/VSDX files to other popular formats to meet business requirements. In this post you will learn how to convert Visio to SVG in C# programmatically. We will use the enterprise‑level Visio file format library to achieve Visio to SVG and Visio to HTML conversion.

We will cover the following points:

Visio file format library installation

The installation takes only a few seconds and saves production time. You can download the DLL files or install the API via the NuGet package manager.

 Install-Package Aspose.Diagram

Convert Visio to SVG Programmatically in C#

Now we will perform the Visio to SVG conversion with a few lines of C# code.

Steps:

  1. Instantiate the Diagram class and load the source VSDX file.
  2. Create a MemoryStream object to hold the output.
  3. Call the Save method to write the SVG to the stream.
  4. Call the Save method again to write the SVG file to disk.
  5. Read the stream and display the result in the console.

Copy and paste the following code into your main file:

Visio to HTML Conversion in C#

The same library also provides methods to convert Visio to HTML programmatically.

Steps:

  1. Use the Diagram constructor to load a VSD diagram.
  2. Save the diagram as an HTML file by calling the Save method.

The snippet below shows how to convert Visio VSDX to HTML in C#:

You can see the output in the image below:

Visio to HTML in C#

Get a Free License

You can obtain a free temporary license to try the API without evaluation limits.

Summing up

This post showed how to convert Visio to SVG in C# programmatically and how to perform Visio to HTML conversion in C# using the Visio file format library. Explore the documentation for additional features.

We also recommend following our Getting Started guide.

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FAQs

How do I convert Visio to HTML?

Use the Diagram constructor to load a VSD diagram and call the Save method to export it as HTML.

How do I save a Visio file as an SVG?

Visit the link for the code snippet that demonstrates Visio to SVG conversion programmatically.

See Also