How do I update a chart dynamically in Plotly.Blazor?

Use methods like ExtendTrace or modify the Data property and call Update on the chart reference. The library supports real-time updates through C#, as shown in the example with AddData method.

Plotly.Blazor or Syncfusion Blazor charts – which is better for my project?

Plotly.Blazor is open-source and ideal for leveraging plotly.js's advanced interactivity with type-safe C#. Syncfusion offers commercial components with more enterprise features but at a cost. Choose based on budget and specific charting requirements.

Does Plotly.Blazor support 3D charts like surface plots?

Yes, since it wraps plotly.js, it supports all chart types including 3D charts such as Scatter3D and Surface. Use the generated trace classes in the Plotly.Blazor.Traces namespace.

How to handle click events on charts in Plotly.Blazor?

Event handling is currently a missing implementation per the README. For now, you may need to use JavaScript interop directly to handle advanced interactions until the library adds native support.

Can I use Plotly.Blazor in Blazor Server apps without WebAssembly?

Yes, Plotly.Blazor works with both Blazor Server and Blazor WebAssembly. It renders plotly.js on the client-side, so it's compatible with any Blazor hosting model.

What's the performance impact of using Plotly.Blazor with large datasets?

Performance depends on plotly.js and data size. Large datasets can slow down due to JavaScript execution and WebAssembly overhead, but the library is optimized for typical dashboard use cases with dynamic updates.

Plotly.Blazor — Plotly.js Wrapper for Blazor

What is Plotly.Blazor?

Plotly.Blazor is a library that wraps the plotly.js JavaScript charting library into a Razor component for use in Blazor applications. It enables developers to create interactive, complex data visualizations directly in C# and .NET, eliminating the need for manual JavaScript interop. The library automatically generates C# classes from the plotly.js schema, ensuring full feature coverage and easy updates.

Target Audience

Blazor developers who need to embed interactive charts and data visualizations in their web applications without writing custom JavaScript. It is particularly useful for data scientists, analysts, and full-stack .NET developers building data-rich dashboards.

Value Proposition

Developers choose Plotly.Blazor because it provides a fully integrated, type-safe way to use plotly.js in Blazor, reducing boilerplate and potential errors. Its automatic code generation ensures compatibility with the latest plotly.js features, and its native Razor component design fits seamlessly into the Blazor development workflow.

This library packages the well-known charting library plotly.js into a razor component that can be used in a Blazor project.

Use Cases

Best For

Building interactive dashboards in Blazor Server or Blazor WebAssembly apps
Creating scientific or financial charts with complex interactivity in .NET
Embedding publication-quality graphs in enterprise Blazor applications
Developing data visualization tools without writing JavaScript
Rapid prototyping of charts with C# and Razor syntax
Migrating existing plotly.js visualizations to a Blazor environment

Not Ideal For

Projects requiring server-side rendering with zero JavaScript execution (plotly.js is client-side only)
Applications built on non-Blazor .NET frameworks like ASP.NET Core MVC or Razor Pages
Teams needing lightweight charting with minimal bundle size (plotly.js adds significant JavaScript payload)
Developers who require fine-grained control over chart events and animations not yet implemented in the wrapper

Pros & Cons

Pros

Automatic Code Generation

Generates C# classes directly from the plotly.js schema, ensuring compatibility and easy updates to new versions, as highlighted in the README's philosophy.

Interactive Chart Support

Supports a wide range of chart types with full interactivity, leveraging plotly.js for publication-quality graphs, demonstrated in the examples.

Seamless Blazor Integration

Designed as a native Razor component with data binding and event handling, fitting naturally into Blazor's component model without manual JavaScript interop.

Strongly-Typed API

Provides IntelliSense and compile-time safety for chart configuration, reducing errors and improving developer experience, as noted in the key features.

Dynamic Updates

Allows real-time modification of traces and data through C# methods like ExtendTrace, enabling interactive dashboards as shown in the usage example.

Cons

Missing Advanced Features

The README explicitly lists missing implementations such as events, batch trace operations, and animation functions, limiting some plotly.js capabilities.

JavaScript Dependency

Relies entirely on plotly.js, which increases bundle size and requires client-side JavaScript execution, potentially impacting performance in Blazor WebAssembly.

Version Constraints

Requires .NET 6 or higher for versions >=2.0.0 and .NET 8 for >=7.0.0, which may force upgrades in legacy projects and add migration overhead.

Complex Initial Setup

Requires adding specific using statements, managing chart references, and understanding plotly.js concepts, making it less plug-and-play for simple use cases.

Frequently Asked Questions

What is Plotly.Blazor?

Target Audience

Value Proposition

Use Cases

Best For

Building interactive dashboards in Blazor Server or Blazor WebAssembly apps
Creating scientific or financial charts with complex interactivity in .NET
Embedding publication-quality graphs in enterprise Blazor applications
Developing data visualization tools without writing JavaScript
Rapid prototyping of charts with C# and Razor syntax
Migrating existing plotly.js visualizations to a Blazor environment

Not Ideal For

Projects requiring server-side rendering with zero JavaScript execution (plotly.js is client-side only)
Applications built on non-Blazor .NET frameworks like ASP.NET Core MVC or Razor Pages
Teams needing lightweight charting with minimal bundle size (plotly.js adds significant JavaScript payload)
Developers who require fine-grained control over chart events and animations not yet implemented in the wrapper

Pros & Cons

Pros

Automatic Code Generation

Generates C# classes directly from the plotly.js schema, ensuring compatibility and easy updates to new versions, as highlighted in the README's philosophy.

Interactive Chart Support

Supports a wide range of chart types with full interactivity, leveraging plotly.js for publication-quality graphs, demonstrated in the examples.

Seamless Blazor Integration

Designed as a native Razor component with data binding and event handling, fitting naturally into Blazor's component model without manual JavaScript interop.

Strongly-Typed API

Provides IntelliSense and compile-time safety for chart configuration, reducing errors and improving developer experience, as noted in the key features.

Dynamic Updates

Allows real-time modification of traces and data through C# methods like ExtendTrace, enabling interactive dashboards as shown in the usage example.

Cons

Missing Advanced Features

The README explicitly lists missing implementations such as events, batch trace operations, and animation functions, limiting some plotly.js capabilities.

JavaScript Dependency

Relies entirely on plotly.js, which increases bundle size and requires client-side JavaScript execution, potentially impacting performance in Blazor WebAssembly.

Version Constraints

Requires .NET 6 or higher for versions >=2.0.0 and .NET 8 for >=7.0.0, which may force upgrades in legacy projects and add migration overhead.

Complex Initial Setup

Requires adding specific using statements, managing chart references, and understanding plotly.js concepts, making it less plug-and-play for simple use cases.

Frequently Asked Questions

Plotly.Blazor

What is Plotly.Blazor?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

Plotly.Blazor

What is Plotly.Blazor?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?