dynamicexpresso/DynamicExpresso

Health v2 · maintenance only

Adoption not part of the score

2238 stars · 413 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Dynamic Expresso is a .NET library that interprets simple C# expressions at runtime, converting them into expression trees or delegates without compilation. It supports injecting variables and parameters, making applications scriptable and enabling dynamic LINQ queries.

Use cases

• evaluate math or string expressions at runtime in C#
• let users write filter expressions for LINQ queries
• build a scriptable application where users supply C#-like expressions
• parse and invoke expressions with injected variables and parameters
• generate delegates from string expressions without compiling code
• implement dynamic rule or condition evaluation from configuration

When to choose

• you need to evaluate user-supplied C#-style expressions safely at runtime
• you want dynamic LINQ filtering with delegates parsed from strings
• you need expression trees instead of compiled assemblies for scriptability

When to avoid

• you need full C# language support including statements, loops, or classes
• you require maximum runtime performance from precompiled code
• your expressions need full generic, dynamic, or lambda support

Facets

library · maturity active

interpreter parser serialization developer-tools programming-languages dotnet cross-platform csharp expression-evaluator lambda-expressions expression-trees dynamic-linq scripting algorithms

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