Flowcharts visually represent processes, decisions, and workflows. When you need to generate these diagrams automatically—such as for reporting, documentation, or dynamic UI—creating them programmatically saves time and ensures consistency. This article explains step‑by‑step how to create a flowchart diagram in C# using the Aspose.Diagram for .NET library.
Install C# API to Make Flowchart Diagram
Aspose.Diagram for .NET enables you to create, edit, and convert Visio files (VSD, VSDX, and other supported formats). Install the library quickly via NuGet:
PM> Install-Package Aspose.Diagram
Alternatively, download the latest DLL from the New Releases page and reference it manually in your project.
Make Flowchart Programmatically in C#
Follow these detailed steps to build a complete flowchart:
- Define a schema that describes the shapes, connectors, and layout you need.
- Load a master diagram (a VSS stencil file) using the Diagram class to access predefined flowchart shapes.
- Add shapes and connectors based on the schema, positioning each element according to your process flow.
- Apply a layout algorithm (e.g., left‑to‑right or top‑to‑bottom) to automatically arrange the shapes for optimal readability.
- Save the result as a Visio file (VSDX) using the Save method.
The code snippet below demonstrates a complete implementation of these steps in C#:
Download Sample Project
A ready‑to‑run sample project, including input stencils and the generated output files, is available for download. Grab it here: sample project.
Sample Output Flowchart Preview
Get Free API License
Evaluate all Aspose.Diagram features without restrictions by requesting a free temporary license.
Conclusion
You now have a clear, programmatic approach to creating Visio flowcharts in C# with Aspose.Diagram. Customize shapes such as decisions, processes, and terminators, and choose layouts that suit your documentation style. For deeper insights, explore the full API documentation or ask questions in the forum.