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C# execute variable code

原文 2011-02-01 05:05:39 2 4 c#/ variables/ dynamic/ execute

Is it possible to execute code from a string variable, like:
string mystring = "Console.WriteLine(\\"Hi\\");"; Is it possible to execute the contents of mystring (printing 'Hi')?

4 answers

It's possible using the System.Reflection.Emit or System.CodeDom namespaces, but it's not exactly a good idea as there's no mechanism to control what namespaces are and are not allowed. A user could build a string that would wipe your hard drive.

eval()-like functions are huge gaping security holes and should be avoided. The preferred alternative is a DSL (domain specific language) .

Yes. Fire up the compiler at runtime and pass in your code. It will spit out executable code. See the System.CodeDom namespace, especially, System.CodeDom.Compiler .

使用代码DOM

Need to use reflection to get something like that. C# is not dynamic or interpreted language, so you dont get it out of the box

http://www.codeproject.com/KB/dotnet/Expr.aspx

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C# execute variable code

Question

4 answers

solution1
4 2011-02-01 05:08:22

solution2
1 2011-02-01 05:07:30

solution3
1 2011-02-01 05:07:32

solution4
1 2011-02-01 05:08:44

C# execute variable code

Question

4 answers

solution1 4 2011-02-01 05:08:22

solution2 1 2011-02-01 05:07:30

solution3 1 2011-02-01 05:07:32

solution4 1 2011-02-01 05:08:44

solution1
4 2011-02-01 05:08:22

solution2
1 2011-02-01 05:07:30

solution3
1 2011-02-01 05:07:32

solution4
1 2011-02-01 05:08:44