Example of Serialization in Blazor Diagram Component

This sample demonstrates interactive diagram building and editing using the Blazor Diagram component together with a symbol palette for drag‑and‑drop composition. It focuses on serialization workflows that enable saving diagrams as JSON, reloading saved diagrams, and preserving edit history for reliable editing sessions.

Key capabilities:

• Drag shapes and symbols from the symbol palette onto the canvas to construct diagrams with intuitive drag‑and‑drop gestures.
• Persist the current diagram state to a JSON payload using the SaveDiagram method for export, storage, or server-side archival.
• Restore a saved diagram by loading its JSON representation via LoadDiagramAsync, preserving nodes, connectors, annotations, and layout metadata.
• Undo and redo are supported to provide safe edit workflows and allow users to experiment without risking data loss.
• JSON-based persistence supports interchange, versioning, and integration with external storage or collaboration services.

Implementation notes and recommendations:

Expose reusable stencils in the symbol palette and include any custom properties, templates, or annotations in the exported JSON so diagrams reconstruct precisely when reloaded. When integrating with server APIs, validate and sanitize JSON payloads and consider schema versioning to maintain backward compatibility. Combine explicit save actions with optional autosave and undo/redo synchronization to reduce data loss during extended editing. Test load/save cycles with complex diagrams to verify connector routing, layer ordering, and annotation placement remain consistent across sessions and clients.

Refer to the linked API documentation for method signatures, examples, and platform considerations. Anchors open in a new tab and include aria-label attributes for accessibility and discoverability.