How could run a string as a code in program in c#? please look at my example :)

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C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DissTest1
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
           String s="Console.WriteLine(\"Hello World!22\");";
           Console.WriteLine("Hello World!11");
            \\Run s here
           Console.WriteLine("Hello World!33"
);

        }
    }
}

Posted 12-Sep-15 10:30am

Murtada_100

Updated 12-Sep-15 10:47am

Maciej Los

v2

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Patrice T · Answer 1 · 2015-09-12T11:49:00

The answer is no, not with C++ or C#.

To do this, you need to embed a runtime parser/compiler in your program and you need to have provision in the language to execute the result of compilation.

You will certainly find libraries that do this but certainly not in C++ because you will have problems to access local variables.

In fact, only semi-compiled languages (using some p-code) can do what you want. And the feature must be planned from the conceiving. You get this feature in VisualFoxPro and other languages from the same family.

In xBase family languages: FoxPro/dBase/xHarbour...

VB

s="? 'Hello World!22'";
?"Hello World!11"
$ s
? "Hello World!33"

the $ calls the internal compiler on fly at runtime.

xHarbour comes with an utility "xPrompt" (open source) that is an interactive console app which embed a full featured parser/compiler. it can load and run a full program that is in a file as source code.

CPallini · Answer 2 · 2015-09-12T10:43:00

You typically execute strings using a script language. There are several scripting languages embeddable in a C# application, see "Scripting language for embedding into C#/.NET applications?" at Stack Overflow[^].
Another approach could be using CodeDom, see, for instance this Code Project article: "Dynamic Code Integration with CodeDom" [^].

PIEBALDconsult · Answer 3 · 2015-09-12T11:23:00

Solution 2

Here's my way: Compiling Source Code from a String[^]

Posted 12-Sep-15 11:23am

PIEBALDconsult

How could run a string as a code in program in c#? please look at my example :)

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