Compile On Fly

This class compiles and executes a dot.net snippets on the fly in memory. Although this is a basic example, but it can be extended with xml inside Completecode();

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using Microsoft.CSharp;
	using System.CodeDom.Compiler;
	using System.Reflection;
	using System.CodeDom;
	using System.IO;
	namespace killercodes_in.CompileOnFly
	{
	public class Compile
	{
	string _codeStatement;
	string _completeCode;
	public Compile(string Code)
	{
	this._codeStatement = Code;
	}
	private string CompleteCode()
	{
	StringBuilder sb = new StringBuilder("using System;");
	sb.AppendLine("namespace killercodes_in.CompileOnFly");
	sb.AppendLine("{");
	sb.AppendLine("public class Program");
	sb.AppendLine("{");
	sb.AppendLine("public static void Main()");
	sb.AppendLine("{").Append(this._codeStatement).Append("}");
	sb.AppendLine("}").AppendLine("}");
	return sb.ToString();
	}
	public bool Execute()
	{
	try
	{
	_completeCode = CompleteCode();
	CompilerParameters compilerParameters = new CompilerParameters();
	// Reference to System.Drawing library
	compilerParameters.ReferencedAssemblies.Add("System.Drawing.dll");
	compilerParameters.ReferencedAssemblies.Add("system.dll");
	//rest of the references can be added as compilerParameters.ReferencedAssemblies.Add("System.Console");
	// True - memory generation, false - external file generation
	compilerParameters.GenerateInMemory = true;
	// True - exe file generation, false - dll file generation
	compilerParameters.GenerateExecutable = true;
	CodeNamespace _nameSpace = new CodeNamespace("CompileOnFly");
	CSharpCodeProvider codeProvider = new CSharpCodeProvider();
	CompilerResults results = codeProvider.CompileAssemblyFromSource(compilerParameters, _completeCode);
	if (results.Errors.HasErrors)
	{
	StringBuilder sb = new StringBuilder();
	foreach (CompilerError error in results.Errors)
	{
	sb.AppendLine(String.Format("Error ({0}): {1}", error.ErrorNumber, error.ErrorText));
	}
	throw new InvalidOperationException(sb.ToString());
	}
	//Get assembly, type and the Main method:
	Assembly assembly = results.CompiledAssembly;
	Type program = assembly.GetType("killercodes_in.CompileOnFly.Program");
	MethodInfo main = program.GetMethod("Main");
	//runti
	main.Invoke(null, null);
	return true;
	}
	catch
	{
	return false;
	}
	}
	}

view raw Dynamic Compile.cs hosted with ❤ by GitHub