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Eval Expression.NET improves performance dramatically to access public and private methods, field, property value, or create object instances overusing C# reflection.

It allows you to evaluate, Compile and Execute dynamic C# code and expression at runtime.

From simple C# math expression...

// @nuget: Z.Expressions.EvalusingZ.Expressions;intresult=Eval.Execute<int>("X + Y",new{X=1,Y=2});

To complex code to parse.

// @nuget: Z.Expressions.EvalusingZ.Expressions;intresult=Eval.Execute<int>(@"var list = new List<int>() { 1, 2, 3, 4, 5 };var filter = list.Where(x => x < 4);return filter.Sum(x => x);");

PM> Install-Package Z.Expressions.Eval

* PRO Version unlocked for the current month

Evaluate and execute the code or expression.

Support:

Anonymous Class

// @nuget: Z.Expressions.EvalusingZ.Expressions;intresult=Eval.Execute<int>("X + Y",new{X=1,Y=2});

Argument Position

// @nuget: Z.Expressions.EvalusingZ.Expressions;intresult=Eval.Execute<int>("{0} + {1}",1,2);

Class Member

// @nuget: Z.Expressions.EvalusingZ.Expressions;dynamicexpandoObject=newExpandoObject();expandoObject.X=1;expandoObject.Y=2;intresult=Eval.Execute<int>("X + Y",expandoObject);

Extension Methods

// @nuget: Z.Expressions.EvalusingZ.Expressions;strings="X + Y";intresult=s.Execute<int>(new{X=1,Y=2});

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Compile the code or expression and return a delegate.

Support:

Custom Delegate

// @nuget: Z.Expressions.EvalusingZ.Expressions;varcompiled=Eval.Compile<Func<int,int,int>>("X + Y","X","Y");foreach(variteminlist){intresult=compiled(item.Value1,item.Value2);}

Extension Methods

// @nuget: Z.Expressions.EvalusingZ.Expressions;strings="X + Y";varcompiled=s.Compile<Func<int,int,int>>("X","Y");foreach(variteminlist){intresult=compiled(item.Value1,item.Value2);}

Learn more

Eval Expression.NET supports all C# Syntax:

• All C# Keywords (MSDN Documentation)
• All C# Operators (MSDN Documentation)
• Constant Folding
• Extension Methods
• Generic Type
• Lambda Expression
• Number Suffix

You can even access C# 6.0 features even if you are using C# 4.0.

• string interpolation
• typename
• null conditional member access

Every month, a new monthly trial of the PRO Version is available to let you evaluate all its features without limitations.

• Starting from version 2.x, there is no longer a free limited version.
• LINQ extension method is free withEF Classic - Community

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