What ways do I have in .net to run code from string?
Console.WriteLine(Compile("1 + 2 * 3")); // results is 7.
What other options do we have?
- C# - Compile the code on runtime?
- IronRuby / IronPython?
- F#?
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2 Answers
So, the dynamic languages like IronRuby and IronPython make it very easy to do what you want. Create a script engine and execute the string. Easy as that.
C#, it is possible, using the Code DOM... but it it compiles the code every time into a DLL. This is a costly behavior and can cause your app to grow in memory size over time if you don't do some tricky stuff with App Domains. It CAN be done, but I really prefer using IronRuby or IronPython over this approach. It is much more simple.
Finally, in C# 5.0, we are expecting to see the compiler as a managed service. This means you will be able to run eval("//c#code") in the future... but it is not available yet.
Hope it helps!
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stacker
You say it's very easy to create an
Eval function using IronPython.Checkout NCalc. It's a dll you can include in your application and it supports multiple math and logic operations. http://ncalc.codeplex.com/
