Excecute A C# Command that Stored in String Variable? [duplicate]

Question

Possible Duplicate:
C# eval equivalent?

Is it possible to Execute a C# command that is stored in a string variable

a thing like Dynamic query in SqlServer

I doubt that would be possible since the string wouldn't get parsed until after the program has been compiled — Ayush
– Ayush, Commented Jan 20, 2012 at 16:49
@xbonez: It's possible to emit your own IL and execute it so I would say it's most definitely possible. — Austin Salonen
– Austin Salonen, Commented Jan 20, 2012 at 16:52
This might look like a duplicate, but the older question specifically asks about C# 2.0, for which the answer is "no". I don't think this question should be closed as a duplicate. — driis
– driis, Commented Jan 20, 2012 at 16:56

driis · Accepted Answer · 2012-01-20 16:49:42Z

1

There is nothing built into the current version of .NET that allows this. However the Roslyn project aims to specifically enable scenarios like this. They have a CTP out.

A simple example, (from Kirill Osenkov's blog), is:

[TestMethod]
public void SimpleEvaluationUsingScriptEngine()
{
    ScriptEngine engine = new ScriptEngine();
    int result = engine.Execute<int>("1 + 2");
    Assert.AreEqual(3, result);
}

answered Jan 20, 2012 at 16:49

driis

165k46 gold badges272 silver badges345 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Chris Pitman Over a year ago

This seems outside the scope of Roslyn, which is just code analysis

driis Over a year ago

@Chris, actually Roslyn aims to provide full REPL / scripting capabilities, amongst other things. Check out some of the links.

Chris Pitman Over a year ago

Ok, cool. I feel like the scope of Roslyn keeps changing.

Falanwe · Accepted Answer · 2012-01-20 16:58:52Z

0

You can use CSharpCodeProvider to compile source code from a file or from strings into an assembly you can load. Then you can invoke the generated classes via reflexion.

answered Jan 20, 2012 at 16:58

Falanwe

4,74426 silver badges37 bronze badges

Collectives™ on Stack Overflow

Excecute A C# Command that Stored in String Variable? [duplicate]

2 Answers 2

3 Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

Comments

Linked

Related